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Apple 550C - page 1
Service Source K Macintosh Po werBook 550c This product is forJapan only. ...
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Apple 550C - page 2
Service Source K Basics Macintosh Po werBook 550c ...
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Apple 550C - page 3
Basics General Information - 1 General Information The Macintosh PowerBook 550c features a built-in trackpad, intelligent batteries, two battery bays, an optional PCMCIA expansion module, a darker shade of plastics, and a 10.4" display. The computer is available in Japan only. ...
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Apple 550C - page 4
Basics Rear Panel - 2 Rear Panel The illustration below shows the location of ports and connectors on the rear panel of the Macintosh PowerBook 550c. ...
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Apple 550C - page 5
Basics PowerBook Screw Matrix - 3 PowerBook Screw Matrix Nine different types of screws are used in the Macintosh PowerBook 550c. All are Torx screws and require either a T-8 or T-6 Torx screwdriver. Note: The legend for the screws follows on the next page. ...
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Apple 550C - page 6
Basics PowerBook Screw Matrix - 4 Legend f or Macintosh Po werBook 550c Screws 1 Feet 2 Hard drive, keyboard, bottom case (middle front), display assembly, floppy drive, daughterboard EMI shield (top edge), inside edge of top case, right side panel 3 Display bezel, display, clutch, DAA 4 Trackpad cable and actuator, daughterboard EMI shield (sides) ...
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Apple 550C - page 7
Basics PowerBook Cable Matrix - 5 PowerBook Cable Matrix For a matrix of cables that work with specific models of the PowerBook family of computers, refer to the PowerBook Cable Matrix. (The Macintosh PowerBook 550c uses the same cables as the Macintosh PowerBook 520/540 Series.) ...
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Apple 550C - page 8
Basics PCMCIA Module Handling - 6 PCMCIA Module Handling The PCMCIA (Personal Computer Memory Card International Association) expansion module is an option for the Macintosh PowerBook 550c. The module inserts into the computer’s second (left) battery bay and has two slots that accept a variety of third-party PCMCIA cards. There are three types of ...
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Apple 550C - page 9
Basics PCMCIA Module Handling - 7 computer will shut down and all RAM contents will be lost. • Eject the PCMCIA module using the lever at the front of the module; eject a PCMCIA card using the PCMCIA Eject control panel or the PCMCIA Quick Eject module in the computer’s Control Strip. • Keep the protective cap that comes with the module and p ...
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Apple 550C - page 10
Basics Battery Information - 8 Battery Information The Macintosh PowerBook 550c includes two nickel- metal-hydride (NiMH) batteries. Each battery provides power for up to 3.5 hours of work time, depending on the battery conservation features employed. A smart processor included in each battery pack indicates the battery’s charge status. For instr ...
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Apple 550C - page 11
Basics Battery Information - 9 Battery Handling ± W arning: NiMH batteries contain toxic materials. Send undamaged, dead batteries to Apple for recycling—do not discard dead batteries with other waste. If the battery is damaged, do not return it to Apple. Dispose of damaged batteries according to local ordinances. Review battery- handling and di ...
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Apple 550C - page 12
Basics Battery Information - 10 • Keep the battery in a cool, dark place; do not store it for longer than 6 months without recharging. • If you are using one battery: Completely discharge and then recharge the battery once every 90 days. • If you are using two batteries: Swap the left and right batteries every month. • Fully charge a replac ...
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Apple 550C - page 13
Service Source K Specifications Macintosh Po werBook 550c ...
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Apple 550C - page 14
Specifications Processor - 1 Processor CPU Motorola 68040 microprocessor 66/33 MHz Addressing 32-bit internal registers 32-bit address bus 32-bit data bus ...
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Apple 550C - page 15
Specifications Memory - 2 Memory RAM 4 MB RAM installed on the daughterboard Expandable to 12 MB with 8 MB Apple RAM expansion card Expandable to 36 MB with third-party RAM expansion card RO M 2 MB PRAM 256 bytes of parameter memory VRAM 512K of static video display memory Clock/Calendar CMOS custom chip with long-life lithium battery ...
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Apple 550C - page 16
Specifications Disk Storage - 3 Disk Storage Floppy Drive 15 mm high, internal, 1.4 MB Apple SuperDrive Hard Drive 2.5 in., 750 MB hard drive ...
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Apple 550C - page 17
Specifications I/O Interfaces - 4 I/O Interfaces SCSI HDI-30 SCSI port with 1.5 MB/sec. transfer rate Supports up to six external SCSI devices Connect SCSI device to computer with HDI-30 SCSI system cable. A pple Desktop Bus Apple Desktop Bus (ADB) port 200 mA maximum current draw for all ADB devices Serial RS-422 serial port; mini DIN-8 connector ...
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Apple 550C - page 18
Specifications I/O Interfaces - 5 V ideo Micro DV-14 video-out port; 8 bit, 256 color video output Supports most Macintosh, VGA, and SVGA monitors Ethernet High-speed Ethernet port; Apple AUI connector Processor -Direct Slot 90-pin processor-direct slot (PDS) for PDS devices or optional Personal Computer Memory Card International Association (PCMCI ...
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Apple 550C - page 19
Specifications I/O Devices - 6 I/O De vices K eyboard Built-in keyboard with 12 function keys 76 keys domestic, 77 keys ISO Two-level tilt adjustment T rackpad Solid-state trackpad Microphone Electret, omnidirectional Output voltage of 4 mV, peak to peak ...
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Apple 550C - page 20
Specifications Sound and Video - 7 Sound and V ideo Sound Generator Apple sound chip provides 16-bit sound capable of driving stereo headphones or other stereo equipment through the sound jack Built-in stereo speakers V ideo Display 10.4-in. diagonal screen Backlit, active-matrix color display; 640 x 400 pixels at thousands of colors; 640 x 480 pix ...
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Apple 550C - page 21
Specifications Electrical - 8 Electrical Main Battery Two nickel-metal-hydride (NiMH) batteries Up to 3.5 hours of usage per battery before recharging Recharge time: 2 hours in shut down or sleep mode, 4 hours while computer is running Po wer Adapter 110–240 VAC line voltage 40 W, 50–60 Hz ...
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Apple 550C - page 22
Specifications Physical - 9 Physical Dimensions Height 2.25 in. (5.7 cm) Width 11.5 in. (29.2 cm) Depth 9.65 in. (24.5 cm) W eight 7.3 lb. (3.3 kg) ...
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Apple 550C - page 23
Specifications Environmental - 10 En vironmental Operating T emperature 50–104°F (10–40°C) Storage T emperature -13 to 140°F (-25 to 60°C) Relative Humidity 20–80% noncondensing Operating Altitude 0–10,000 ft. (0–3048 m) Storage Altitude 0–15,000 ft. (0–4572 m) ...
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Apple 550C - page 24
Specifications Other - 1 1 Other Internal Modem Sends and receives data at 19.2 bps; sends and receives faxes at 14.4 bps SCSI Adapter Enables connection between PowerBook computer and desktop Macintosh (PowerBook appears as a hard drive on the desktop) PCMCIA Module Enables use of two Type I or II PCMCIA cards or one Type III card ...
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Apple 550C - page 25
Service Source K Troubleshooting Macintosh PowerBook 550c ...
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Apple 550C - page 26
Troubleshooting General - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Because cures are listed on the charts in the order of most likely solution, try the first cure first. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the ...
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Apple 550C - page 27
Troubleshooting Power Manager Reset - 2 Power Manager Reset Reset the power manager if • The battery and power adapter are proven good, but the computer will not power on. • The computer will not reset after a system crash. To reset the power manager in the Macintosh PowerBook 550c, • Remove the AC adapter and the battery. • Let the unit si ...
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Apple 550C - page 28
Troubleshooting A C Adapter Voltage Test - 3 AC Adapter Voltage Test To test the AC adapter voltage, • Use narrow test probes for the leads on your voltmeter • Make all measurements with the negative or common lead touching the outer shield of the connector (ground) • Use the following table to identify the connector pin number, signal name, ...
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Apple 550C - page 29
Troubleshooting Symptom Charts/ Startup - 4 Symptom Charts Startup RAM failure occurs (eight-tone error chord sounds after startup chord) 1 Reseat RAM expansion card and check connection. 2 Replace RAM expansion card. 3 Replace daughterboard. 4 Replace motherboard. Hardware failure occurs (four-tone error chord sounds after startup chord) 1 Disconn ...
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Apple 550C - page 30
Troubleshooting Symptom Charts/ Power - 5 Power Screen is blank; computer doesn’t respond 1 Restart computer. 2 Connect power adapter and restart computer in 3–4 minutes. 3 Try known-good, charged main battery. 4 Check all interconnect board, daughterboard, and motherboard connections. 5 Reset the power manager. 6 Replace keyboard. 7 Replace in ...
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Apple 550C - page 31
Troubleshooting Symptom Charts/ Power (Continued) - 6 Power (Continued) After you remove main battery, some Control Panel settings are different 1 Check cables. 2 Replace backup battery. 3 Replace interconnect board. 4 Replace daughterboard. 5 Replace motherboard. Power adapter is plugged in, but Control Strip doesn’t indicate adapter is connecte ...
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Apple 550C - page 32
Troubleshooting Symptom Charts/ Power (Continued) - 7 Power (Continued) Low-power warning appears 1 Recharge battery or attach power adapter. 2 Verify that peripherals are low-power. 3 Reduce use of floppy or hard drive, modem, sound, backlight, or other power-consuming devices, or connect power adapter. 4 Try known-good, charged main battery. 5 Tr ...
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Apple 550C - page 33
Troubleshooting Symptom Charts/ Power (Continued) - 8 Power (Continued) Computer won’t power up 1 Restart computer. 2 Connect power adapter and restart computer in 3–4 minutes. 3 Try known-good power adapter. Verify power adapter tip is not chipped or cracked. 4 Try known-good, charged main battery. 5 Replace fuse on motherboard. 6 Replace moth ...
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Apple 550C - page 34
Troubleshooting Symptom Charts/ Video - 9 Video Pixel never comes on or is always on If more than five pixels do not come on or are always on, replace display. Partial or full row of pixels is always on or never comes on 1 Check cables. 2 Replace interconnect board. 3 Replace motherboard. 4 Replace display. ...
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Apple 550C - page 35
Troubleshooting Symptom Charts/ Video (Continued) - 1 0 Video (Continued) Display is very light or totally white 1 Adjust screen contrast and brightness settings. 2 Verify cable, inverter board, interconnect board, daughterboard, and motherboard connections. 3 Replace inverter board. 4 Replace interconnect board. 5 Replace interconnect-to-display c ...
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Apple 550C - page 36
Troubleshooting Symptom Charts/ Video (Continued) - 1 1 Video (Continued) Backlight doesn’t operate 1 Verify that backlight cable connection is secure. 2 Check cable, inverter board, interconnect board, daughterboard, and motherboard connections. 3 Verify that cables are not pinched or severed. 4 Replace inverter board. 5 Replace interconnect-to- ...
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Apple 550C - page 37
Troubleshooting Symptom Charts/ Video (Continued) - 1 2 Video (Continued) No display, but computer appears to operate correctly 1 Press any key to wake computer from system sleep. 2 Adjust screen contrast and brightness settings. 3 Verify cable, inverter board, trackpad, keyboard, inter- connect board, daughterboard, and motherboard connections. 4 ...
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Apple 550C - page 38
Troubleshooting Symptom Charts/ Floppy Drive - 13 Floppy Drive Audio and video present, but internal floppy drive does not operate 1 Try known-good floppy disk. 2 Check floppy drive cable connection. 3 Replace floppy drive cable. 4 Replace floppy drive. 5 Replace motherboard. Disk ejects while booting; display shows Mac icon with blinking X 1 Try k ...
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Apple 550C - page 39
Troubleshooting Symptom Charts/ Floppy Drive (Continued) - 1 4 Floppy Drive (Continued) Disk does not eject 1 Switch off system and hold trackpad button down while you switch system on. 2 Eject disk manually by carefully inserting opened paper clip into hole near floppy drive slot. 3 If PowerBook serial number is between FC410 and FC414 or between ...
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Apple 550C - page 40
Troubleshooting Symptom Charts/ Floppy Drive (Continued) - 1 5 Floppy Drive (Continued) Disk initialization fails 1 Try known-good floppy disk. 2 Check floppy drive cable connection. 3 Replace floppy drive cable. 4 Replace floppy drive. Read/write/copy error 1 Try known-good floppy disk. 2 Check floppy drive cable connection. 3 Try application disk ...
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Apple 550C - page 41
Troubleshooting Symptom Charts/ Hard Drive - 16 Hard Drive Internal hard drive does not operate 1 Make sure power adapter is connected. 2 Disconnect external SCSI devices. 3 Check hard drive cable connection. 4 Use HD SC Setup to reinitialize drive. 5 Replace hard drive cable. 6 Replace hard drive. 7 Replace motherboard. ...
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Apple 550C - page 42
Troubleshooting Symptom Charts/ Peripheral - 17 Peripheral After you connect external SCSI device, computer does not boot 1 Switch on external SCSI device before starting computer. 2 Check cable connections. 3 Verify that SCSI chain is terminated correctly. 4 Verify that SCSI select switch setting on external device is unique. 5 Verify operation of ...
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Apple 550C - page 43
Troubleshooting Symptom Charts/ Peripheral (Continued) - 1 8 Peripheral (Continued) Cursor does not move when you are using trackpad 1 Reset the power manager. 2 Check trackpad connections. 3 Check interconnect board, keyboard, and motherboard connections. 4 Connect low-power mouse and try to move cursor. If cursor moves, try using trackpad and key ...
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Apple 550C - page 44
Troubleshooting Symptom Charts/ Peripheral (Continued) - 1 9 Peripheral (Continued) Cursor intermittently does not move or moves erratically 1 Reset the power manager. 2 Clean trackpad surface. 3 Check trackpad connections. 4 Replace trackpad. 5 Replace keyboard. 6 Replace interconnect board. 7 Replace motherboard. Cursor does not move when you are ...
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Apple 550C - page 45
Troubleshooting Symptom Charts/ Peripheral (Continued) - 2 0 Peripheral (Continued) Cursor moves, but clicking trackpad button has no effect 1 Reset the power manager. 2 Check trackpad connections. 3 Check interconnect board, keyboard, and motherboard connections. 4 Replace trackpad. 5 Replace keyboard. 6 Replace interconnect board. 7 Replace mothe ...
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Apple 550C - page 46
Troubleshooting Symptom Charts/ Peripheral (Continued) - 2 1 Peripheral (Continued) Known-good direct- connect printer does not print 1 Verify that System is 7.1.1 or later. 2 Verify that Chooser and Control Panel settings are correct. 3 Check cables. 4 Replace printer cable. 5 Try known-good printer. 6 Replace daughterboard. 7 Replace motherboard. ...
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Apple 550C - page 47
Troubleshooting Symptom Charts/ Peripheral (Continued) - 2 2 Peripheral (Continued) Known-good network printer does not print 1 Verify that System is 7.1.1 or later. 2 Verify that Chooser and Control Panel settings are correct. 3 Check cables. 4 Replace printer cable. 5 Try known-good printer. If printer works, troubleshoot network. 6 Replace daugh ...
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Apple 550C - page 48
Troubleshooting Symptom Charts/ Peripheral (Continued) - 2 3 Peripheral (Continued) Device connected to external modem port doesn’t work 1 Verify that External Modem is selected in CDEV. 2 Verify that System is 7.1.1 or later. 3 Check cables. 4 Test device with known-good computer. 5 Replace daughterboard. 6 Replace motherboard. I/O devices are u ...
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Apple 550C - page 49
Troubleshooting Symptom Charts/ Internal Modem - 24 Internal Modem Internal modem options do not appear in CDEV 1 Verify that System is 7.1.1 or later. 2 Reseat modem card. 3 Replace modem card. 4 Replace motherboard. Modem does not respond properly to AT command set instructions 1 Verify that baud rate and data format settings of communications ap ...
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Apple 550C - page 50
Troubleshooting Symptom Charts/ Internal Modem (Continued) - 2 5 Internal Modem (Continued) Strange mix of characters appears on screen 1 Verify that baud rate and data format settings of communications application are compatible with internal modem and remote modem. 2 Check phone cord connection and operation. 3 Verify that System is 7.1.1 or late ...
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Apple 550C - page 51
Troubleshooting Symptom Charts/ Internal Modem (Continued) - 2 6 Internal Modem (Continued) Modem does not respond to incoming call 1 If computer is in sleep mode, verify that Wake On Ring option in CDEV is selected. 2 Check phone cord connection and operation. 3 Replace modem card. 4 Replace motherboard. Modem has no sound output 1 Verify that Con ...
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Apple 550C - page 52
Troubleshooting Symptom Charts/ Internal Modem (Continued) - 2 7 Internal Modem (Continued) Modem connects but does not communicate with remote modem 1 Verify that remote modem needs error correction (error correction is internal modem default). 2 If remote modem does not need error correction, type AT &Q0 to disable error correction. ...
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Apple 550C - page 53
Troubleshooting Symptom Charts/ Internal Modem (Continued) - 2 8 Internal Modem (Continued) You are using System 7.5 and two messages appear: “This Macintosh may not have been shut down properly” and “Incoming fax cannot be received because internal modem could not be identified...” Following the messages, the system “hangs.” 1 Restart ...
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Apple 550C - page 54
Troubleshooting Symptom Charts/ PCMCIA Module - 2 9 PCMCIA Module PCMCIA card won’t eject 1 Make sure PCMCIA slot is not blocked. 2 Insert straightened paper clip into hole next to slot. PCMCIA card is inserted but doesn’t appear on desktop If “defective card” or “unrecognizable card” appears in place of card name in PCMCIA Eject contro ...
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Apple 550C - page 55
Troubleshooting Symptom Charts/ Miscellaneous - 3 0 Miscellaneous Screen goes blank and computer shuts down every few minutes Computer is going into system sleep to conserve battery power. Adjust sleep delays in Control Panel or connect power adapter. Application seems to run slower after a few seconds Computer is switching to system rest. If syste ...
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Apple 550C - page 56
Troubleshooting Symptom Charts/ Miscellaneous (Continued) - 3 1 Miscellaneous (Continued) No sound from speaker 1 Verify that volume setting in Control Panel is above 0. 2 Verify that no external speaker is plugged in. 3 Check connections of speaker to interconnect board and interconnect board to motherboard. 4 Replace interconnect board. 5 Replace ...
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Apple 550C - page 57
Service Source K T ake Apart Macintosh Po werBook 550c ...
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Apple 550C - page 58
Take Apart Battery/PCMCIA Module - 1 Battery/PCMCIA Module Before you begin, discon- nect the power adapter. Note: This procedure covers removal of the main battery, second battery or PCMCIA expansion module, and battery contact cover. Important: Before removing the battery, use the Macintosh Shut Down command. Otherwise, all RAM contents will be l ...
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Apple 550C - page 59
Take Apart Battery/PCMCIA Module - 2 Caution: The Macintosh PowerBook 550c contains devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins/Safety. 1 Slide the release button toward you and pull out the main battery on the right side of the computer. 2 Repeat the proce ...
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Apple 550C - page 60
Take Apart Battery/PCMCIA Module - 3 3 Note: The battery bezel includes a separate latch and latch spring. Remove the bezel carefully so these parts do not fall out. If you are replacing the battery bezel, pry up both ends of the bezel and lift it off the main battery. Replacement Note: Make sure the battery bezel latch spring is com- pressed again ...
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Apple 550C - page 61
Take Apart Battery/PCMCIA Module - 4 4 If you are replacing the battery contact cover, press in on the sides of the cover and slide it off the main battery. Battery Contact Cover ...
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Apple 550C - page 62
Take Apart Battery/PCMCIA Module - 5 5 Note: Complete the following step if a PCMCIA expansion module is installed in the computer. Using the tip of your finger, rotate the lever at the front of the PCMCIA module toward you. 6 Note: You may have to use some force when pulling the module out of the computer. Holding onto the lever, pull the PCMCIA m ...
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Apple 550C - page 63
Take Apart Keyboard - 6 Keyboard Before you begin, remove the battery/PCMCIA module. Keyboard ...
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Apple 550C - page 64
Take Apart Keyboard - 7 1 Using a T-8 torx driver, remove the middle two bottom housing screws. ...
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Apple 550C - page 65
Take Apart Keyboard - 8 2 Using a small flat-blade screwdriver, lift the front of the keyboard and pull it forward slightly. 3 Rotate the keyboard so that it is perpendicular to the top cover. Keyboard ...
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Apple 550C - page 66
Take Apart Keyboard - 9 4 Release the locking tabs on the two keyboard cable connectors and disconnect the cables from the motherboard. 5 Lift off the keyboard. Locking Tabs ...
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Apple 550C - page 67
Take Apart Hard Drive - 10 Hard Drive Before you begin, remove the following: • Battery/PCMCIA module • Keyboard Hard Drive ...
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Apple 550C - page 68
Take Apart Hard Drive - 11 1 Using a T-8 torx driver, remove the hard drive mounting screw. ...
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Apple 550C - page 69
Take Apart Hard Drive - 12 2 Using a small flat-blade screwdriver, pry up the front of the hard drive and slide it forward 1/2 inch. 3 Note: Use a rocking motion to disconnect the hard drive cable from the hard drive. Lift the drive partway out of the unit and disconnect the hard drive cable. 4 Remove the hard drive. Hard Drive Hard Drive Cable ...
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Apple 550C - page 70
Take Apart Hard Drive - 13 5 If you are replacing the hard drive, remove the four screws and remove the hard drive bracket and insulator. Replacement Note: Reinstall the hard drive bracket and insulator on the replacement hard drive. Insulator Bracket ...
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Apple 550C - page 71
Take Apart Clutch Covers - 1 4 Clutch Covers Before you begin, remove the battery/PCMCIA module. Clutch Cover Clutch Cover ...
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Apple 550C - page 72
Take Apart Clutch Covers - 1 5 1 Open the unit and rotate the display assembly as far back as it will go. 2 Using a flat-blade screwdriver and your fingers, press in on both sides of the wide end of the right clutch cover and release the two front latches. 3 Rotate the clutch cover up, release the third latch, and remove the cover. 4 Repeat for the ...
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Apple 550C - page 73
Take Apart Clutch Covers - 1 6 Replacement Caution : Be careful not to pinch or rip the display cable when you replace the right clutch cover. ...
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Apple 550C - page 74
Take Apart Display Access Cover - 1 7 Display Access Cover Before you begin, remove the battery/PCMCIA module. Display Access Cover ...
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Apple 550C - page 75
Take Apart Display Access Cover - 1 8 1 Open the unit and rotate the display assembly as far back as it will go. 2 Using a small flat-blade screwdriver, pry up the display access cover at the three slots in the front of the cover. 3 Remove the display access cover. ...
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Apple 550C - page 76
Take Apart Display Assembly - 1 9 Display Assembly Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover Display Assembly ...
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Apple 550C - page 77
Take Apart Display Assembly - 2 0 Caution: Support the display assembly from beneath before removing it. 1 Open the unit and rotate the display assembly as far back as it will go. 2 Disconnect the interconnect-to-logic- board cable. 3 Using a T-8 torx driver, remove the two display mounting screws. 4 Slide the display assembly to the left so that t ...
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Apple 550C - page 78
Take Apart Display Assembly - 21 interconnect-to-logic- board cable. 5 Remove the display assembly. ...
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Apple 550C - page 79
Take Apart Center Base Cover - 2 2 Center Base Cover Before you begin, remove the following: • Battery/PCMCIA module • Keyboard Center Base Cover ...
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Apple 550C - page 80
Take Apart Center Base Cover - 2 3 1 Using a T-8 torx driver, remove the two rear panel screws. Replacement Caution: When replacing the rear panel screws, be sure to install the right screw first (the screw nearest the SCSI port). ...
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Apple 550C - page 81
Take Apart Center Base Cover - 2 4 2 Pull the center base cover forward slightly and slide it 1/2 inch to the right to release the two screw carriers. 3 Remove the center base cover. Screw Carrier ...
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Apple 550C - page 82
Take Apart Floppy Drive - 25 Floppy Drive Before you begin, remove the following: • Battery/PCMCIA module • Keyboard • Center base cover Floppy Drive ...
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Apple 550C - page 83
Take Apart Floppy Drive - 26 1 Using a T-8 torx driver, remove the two floppy drive screws. ...
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Apple 550C - page 84
Take Apart Floppy Drive - 27 2 Using a small flat-blade screwdriver, pry up the cable end of the floppy drive and slide the drive 1/2 inch to the left. 3 Slide the drive forward slightly and lift it partway out of the unit. 4 Disconnect the floppy drive cable from the motherboard and remove the drive. Floppy Drive Cable ...
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Apple 550C - page 85
Take Apart Floppy Drive - 28 Replacement Caution: Before disconnecting the floppy drive cable from the drive, note the cable folds and the correct orientation of the cable connection. Because the cable connector is not keyed, the floppy drive cable could be reinserted upside down. Replacement Caution: When you reinstall the floppy drive, make sure ...
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Apple 550C - page 86
Take Apart Floppy Drive - 29 5 If you are replacing the floppy drive or floppy drive cable, release the locking tabs and disconnect the cable from the drive. Locking Tab Floppy Drive Cable ...
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Apple 550C - page 87
Take Apart Floppy Drive - 30 6 If you are replacing the floppy drive, remove the two right bracket screws and remove the right bracket. 7 Remove the two left bracket screws and remove the left bracket. ...
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Apple 550C - page 88
Take Apart Floppy Drive - 31 Replacement Note: Reinstall the floppy drive brackets and floppy drive cable on the replacement floppy drive. Use the following procedure for the brackets: • Start the screws in the right bracket. • Push the front of the bracket toward the top of the floppy drive. • Hold the bracket in this position and retighten ...
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Apple 550C - page 89
Take Apart Floppy Drive - 32 Replacement Caution: If the brackets are not pushed toward the top of the floppy drive, the floppy disk may not eject properly. ...
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Apple 550C - page 90
Take Apart Daughterboard EMI Shield - 3 3 Daughterboard EMI Shield Before you begin, remove the following: • Battery/PCMCIA module • Keyboard • Center base cover Daughterboard EMI Shield ...
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Apple 550C - page 91
Take Apart Daughterboard EMI Shield - 3 4 1 Remove the three mounting screws. 2 Using a small flat-blade screwdriver, pry up and remove the daughterboard EMI shield. Replacement Caution: Make sure all the tabs on the sides of the shield fit inside the daughterboard guide. Daughterboard EMI Shield ...
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Apple 550C - page 92
Take Apart Daughterboard - 3 5 Daughterboard Before you begin, remove the following: • Battery/PCMCIA module • Keyboard • Center base cover • Daughterboard EMI shield • RAM card (if installed) • Modem card (if installed) Daughterboard ...
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Apple 550C - page 93
Take Apart Daughterboard - 3 6 Note: To remove the daughterboard, you will need to adapt an IC extractor so that it has a wide grip. 1 Grasp an IC extractor by the legs and pull outward. ...
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Apple 550C - page 94
Take Apart Daughterboard - 3 7 2 Remove the plastic retainer bar. 3 Note: The daughterboard is connected to the motherboard below the RAM card connector. Caution: You may have to use some force to disconnect the daughter- board. Use an IC extractor, as illustrated. Do not pry up the board with a screwdriver. Place the legs of the IC extractor in th ...
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Apple 550C - page 95
Take Apart Top Case - 3 8 Top Case Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive Top Case ...
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Apple 550C - page 96
Take Apart Top Case - 3 9 1 Rotate the feet to the up position. 2 Using a T-8 torx driver, remove the screw located under each foot. 3 Remove the four screws at the front edge of the bottom case. Small Screw Small Screw ...
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Apple 550C - page 97
Take Apart Top Case - 4 0 4 Remove the remaining screw on the inside top edge of the case. ...
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Apple 550C - page 98
Take Apart Top Case - 4 1 5 Caution: The top case is connected to the motherboard by the trackpad cable. Be careful not to lift the top case too far off the unit or you may damage the cable. Carefully lift and rotate the top case toward you and disconnect the trackpad cable from the motherboard. Trackpad Cable Trackpad Cable Connector ...
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Apple 550C - page 99
Take Apart Top Case - 4 2 6 Remove the interconnect-to-logic board cable from the opening for the right clutch. 7 Remove the top case. Replacement Note: Before securing the top case to the bottom case, thread the interconnect-to-logic board cable through the opening for the right clutch. Form a loop around the EMI clip by wrapping the cable from be ...
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Apple 550C - page 100
Take Apart Fuse - 4 3 Fuse Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Top case Fuse ...
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Apple 550C - page 101
Take Apart Fuse - 4 4 Using a small flat-blade screwdriver, pry up and remove the fuse. Fuse ...
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Apple 550C - page 102
Take Apart Interconnect-to-Logic-Bd. Cable - 45 Interconnect-to- Logic-Bd. Cable Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Top case Interconnect-to- Logic-Board Cable ...
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Apple 550C - page 103
Take Apart Interconnect-to-Logic-Bd. Cable - 46 Caution: Before discon- necting the interconnect- to-logic-board cable, note the correct orientation of the cable connection. Because the connector is not keyed, the cable could be reinserted upside down. Disconnect the interconnect-to-logic- board cable from the motherboard and remove the cable. Inte ...
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Apple 550C - page 104
Take Apart Side Panels - 47 Side Panels Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Top case Right Side Panel Left Side Panel ...
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Apple 550C - page 105
Take Apart Side Panels - 48 1 Using a T-8 torx driver, remove the right side- panel mounting screw. 2 Lift the panel slightly, slide it back, and remove it from the CPU stiffener. 3 Using a T-8 torx driver, remove the three left side-panel mounting screws. 4 Slide the panel to the left and remove it from the CPU stiffener. ...
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Apple 550C - page 106
Take Apart CPU Stiffener - 49 CPU Stiffener Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Daughterboard EMI shield • Top case • Interconnect-to-logic- bd. cable CPU Stiffener ...
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Apple 550C - page 107
Take Apart CPU Stiffener - 50 Note: In this take-apart procedure, the CPU stiffener is removed with the side panels attached. This procedure also explains how to remove the panels from the stiffener. 1 Unlatch the left side panel from the back panel. Left Side Panel Latch ...
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Apple 550C - page 108
Take Apart CPU Stiffener - 51 2 Rotate the feet to the up position. 3 Lift the CPU stiffener straight off the unit. CPU Stiffener ...
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Apple 550C - page 109
Take Apart CPU Stiffener - 52 Note: If you are replacing the CPU stiffener, remove the side panels. 4 Using a T-8 torx driver, remove the right side- panel screw. 5 Lift the panel slightly, slide it back, and remove it from the CPU stiffener. 6 Using a T-8 torx driver, remove the three left side-panel screws. 7 Slide the panel to the left and remov ...
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Apple 550C - page 110
Take Apart CPU Stiffener - 53 Replacement Caution: Make sure both EMI clips fold on top of the clutch pegs. If the right clip accidentally folds backward and touches the pins for the power connector, the contact could short out the motherboard. EMI Clip Clutch Peg ...
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Apple 550C - page 111
Take Apart Lifter Feet - 54 Lifter Feet Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Daughterboard EMI shield • Top case • Interconnect-to-logic- bd. cable • CPU stiffener Lifter Lifter Fo ...
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Apple 550C - page 112
Take Apart Lifter Feet - 55 1 Remove the mounting screw and washer for the right lifter foot, and remove the foot. 2 Repeat for the left lifter foot. Lifter Lifter Foot Foot ...
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Apple 550C - page 113
Take Apart Motherboard - 5 6 Motherboard Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Daughterboard EMI shield • Top case • Interconnect-to-logic- bd. cable • CPU stiffener • DAA card (i ...
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Apple 550C - page 114
Take Apart Motherboard - 5 7 1 Remove the motherboard mounting screw and standoff. 2 Carefully pry the motherboard from the positioning peg located below the standoff. 3 Slide the board forward 1/4 inch. 4 Caution: In lifting the motherboard, be careful that the sound-in and sound-out ports clear the openings in the rear panel. Lift off the motherb ...
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Apple 550C - page 115
Take Apart Motherboard - 5 8 5 If you are replacing the motherboard, discon- nect the RAM card (if installed), daughter- board, and modem card (if installed). Daughterboard ...
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Apple 550C - page 116
Take Apart Motherboard - 5 9 Replacement Note: Make sure the front of the motherboard fits securely below the positioning peg on the bottom case. Positioning Peg ...
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Apple 550C - page 117
Take Apart Hard Drive Cable - 6 0 Hard Drive Cable Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Daughterboard EMI shield • Top case • Interconnect-to-logic- bd. cable • CPU stiffener • M ...
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Apple 550C - page 118
Take Apart Hard Drive Cable - 6 1 1 Turn over the motherboard. 2 Disconnect the hard drive cable from the motherboard. Hard Drive Cable ...
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Apple 550C - page 119
Take Apart Rear Door - 62 Rear Door No preliminary steps are required. Rear Door ...
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Apple 550C - page 120
Take Apart Rear Door - 63 1 Open the rear door. 2 Carefully bend the door so that the middle bows downward. 3 Unhinge the bottom door pegs and remove the rear door. Door Peg Door Peg ...
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Apple 550C - page 121
Take Apart Bottom Case - 6 4 Bottom Case To remove the bottom case, remove the following: • Battery/PCMCIA module • Rear door • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Daughterboard EMI shield • Top case • Interconnect-to-logic- bd. cable • Side p ...
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Apple 550C - page 122
Take Apart Bottom Case - 6 5 • CPU stiffener • Motherboard ...
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Apple 550C - page 123
Take Apart Mi crophone Assembly - 6 6 Microphone Assembly Before you begin, remove the following: • Battery/PCMCIA module • Display access cover Microphone Assembly ...
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Apple 550C - page 124
Take Apart Mi crophone Assembly - 6 7 1 Carefully disconnect the microphone cable from the interconnect board. 2 Using a small flat-blade screwdriver, pry up and remove the microphone assembly. Microphone Cable Microphone Assembly ...
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Apple 550C - page 125
Take Apart Backup Battery - 6 8 Backup Battery Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Top case Backup Battery ...
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Apple 550C - page 126
Take Apart Backup Battery - 6 9 1 Using a small flat-blade screwdriver, pry up and remove the backup battery cover. Backup Battery Cover ...
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Apple 550C - page 127
Take Apart Backup Battery - 7 0 2 Carefully disconnect the backup battery cable. 3 Remove the cable from the cable guides. 4 Pry up and remove the backup battery and cable. Backup Battery Cable Connector Backup Battery Cable Cable Guides ...
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Apple 550C - page 128
Take Apart Trackpad Assembly - 7 1 Trackpad Assembly Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Top case Trackpad Assembly ...
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Apple 550C - page 129
Take Apart Trackpad Assembly - 7 2 1 Disconnect the backup battery cable. 2 Using a T-8 torx driver, remove the front two mounting screws. Backup Battery Cable Connector ...
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Apple 550C - page 130
Take Apart Trackpad Assembly - 7 3 3 Note: The trackpad cable assembly includes the display actuator switch and the trackpad button. Disconnect the trackpad cable assembly and remove it from the unit. Replacement Note: Recon- nect the backup battery cable before reconnecting the trackpad cable assembly. Replacement Note: Before securing the two scr ...
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Apple 550C - page 131
Take Apart Trackpad Assembly - 7 4 4 Using a T-8 torx driver, remove the remaining two mounting screws. 5 Pry up and remove the trackpad actuator assembly. Trackpad Actuator Assembly ...
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Apple 550C - page 132
Take Apart Trackpad Assembly - 7 5 6 With your fingers, push up from underneath the trackpad logic board and remove it from the top case. Trackpad Logic Board ...
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Apple 550C - page 133
Take Apart Display Bezel Assembly - 7 6 Display Bezel Assembly Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly Display Bezel Assembly ...
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Apple 550C - page 134
Take Apart Display Bezel Assembly - 7 7 1 Remove the microphone from the plastic retainer. 2 Disconnect the speaker cable from the interconnect board. 3 Remove the bottom two bezel mounting screws. Speaker Cable Microphone ...
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Apple 550C - page 135
Take Apart Display Bezel Assembly - 7 8 4 Pry off the two rubber bumpers. 5 Remove the top two bezel mounting screws. Rubber Bumper ...
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Apple 550C - page 136
Take Apart Display Bezel Assembly - 7 9 6 Note: Two hooks on each side of the bezel secure it to the rear housing. Pull the display bezel forward and lift it off the rear housing. Display Bezel ...
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Apple 550C - page 137
Take Apart Display - 80 Display Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly Note: The display EMI shield is attached to the display with adhesive. Pry up the shield carefully when removing it from the display. Display ...
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Apple 550C - page 138
Take Apart Display - 81 1 Fold back the display EMI shield from the top and side edges of the display. 2 Remove the four mounting screws. 3 Disconnect the backlight cable from the inverter board. 4 Disconnect the interconnect-to- display cable from the interconnect board. 5 Lift the display from the rear housing. Interconnect-to- Display Cable Back ...
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Apple 550C - page 139
Take Apart Display - 82 6 If you are replacing the display, disconnect and remove the inter- connect-to-display cable from the back of the display. Connector Interconnect-to-Display Cable ...
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Apple 550C - page 140
Take Apart Inverter Board - 83 Inverter Board Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly Note: The display EMI shield covers the inverter board and attaches to the display with adhesive. Pry up the shield carefully before removing the i ...
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Apple 550C - page 141
Take Apart Inverter Board - 84 1 Fold back the display EMI shield from the right edge of the display. 2 Remove the inverter board mounting screw. 3 Disconnect the interconnect-to- inverter cable and the backlight cable. 4 Remove the inverter board. Interconnect-to- Inverter Cable Backlight Cable ...
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Apple 550C - page 142
Take Apart Interconnect Board - 8 5 Interconnect Board Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly Interconnect Board ...
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Apple 550C - page 143
Take Apart Interconnect Board - 8 6 1 Disconnect the interconnect-to- display cable and the interconnect-to- inverter cable. 2 Remove the two mounting screws. 3 Remove the interconnect board. Interconnect- to-Display Cable Interconnect-to- Inverter Cable ...
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Apple 550C - page 144
Take Apart Interconnect-to-Inverter Cable - 87 Interconnect-to- Inverter Cable Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly • Display Interconnect-to- Inverter Cable ...
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Apple 550C - page 145
Take Apart Interconnect-to-Inverter Cable - 88 1 Disconnect the interconnect-to- inverter cable from the interconnect and inverter boards. 2 Remove the cable. Interconnect-to- Inverter Cable Interconnect Board Inverter Board ...
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Apple 550C - page 146
Take Apart Interconnect-to-Display Cable - 89 Interconnect-to- Display Cable Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly • Display Interconnect-to-Display Cable ...
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Apple 550C - page 147
Take Apart Interconnect-to-Display Cable - 90 1 Disconnect the interconnect-to- display cable from the back of the display. 2 Remove the cable. Interconnect-to-Display Cable Connector ...
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Apple 550C - page 148
Take Apart Clutches - 9 1 Clutches Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly Clutch Clutch ...
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Apple 550C - page 149
Take Apart Clutches - 9 2 1 Remove the mounting screw for the right clutch and remove the clutch. 2 Repeat for the left clutch. ...
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Apple 550C - page 150
Take Apart Display EMI Shield - 93 Display EMI Shield Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly • Display • Inverter board • Interconnect board • Interconnect-to- inverter cable • Clutches Display EMI Shield ...
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Apple 550C - page 151
Take Apart Display EMI Shield - 94 Remove the display EMI shield from the display rear housing. Display EMI Shield ...
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Apple 550C - page 152
Take Apart Display Rear Housing - 9 5 Display Rear Housing To remove the rear housing, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Display bezel assembly • Display • Inverter board • Interconnect board • Interconnect-to- inverter cable • Clutches • Display EMI shiel ...
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Apple 550C - page 153
Service Source K Upgrades Macintosh Po werBook 550c ...
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Apple 550C - page 154
Upgrades RAM Card - 1 RAM Card Before you begin, remove the following: • Battery/PCMCIA module • Keyboard • Center base cover • Daughterboard EMI shield Caution: Handle the RAM expansion card by the edges only. Do not touch any components on the card. Note: The RAM card is a PowerBook 550c option. This procedure explains how to install the ...
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Apple 550C - page 155
Upgrades RAM Card - 2 1 Remove the plastic retainer bar. 2 Caution: An incorrectly installed RAM card could damage the daughter- board. Note that the expansion connector and the RAM card are keyed for proper installation. Do not defeat the key by forcing the card into the connector. Caution: When installing the card, press down on the edge directly ...
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Apple 550C - page 156
Upgrades RAM Card - 3 not to apply pressure to any components or you may permanently damage the card. Place the edge of the RAM card in the two guides. Using the RAM card alignment tool for correct positioning, connect the card to the expansion connector on the daughterboard. RAM Card Expansion Connector RAM Card Guides ...
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Apple 550C - page 157
Upgrades RAM Card - 4 Note: To verify that the upgrade is successful, check the Total Memory message (for systems with virtual memory switched off) or the Built-in Memory message (for systems with virtual memory switched on). The memory size should be 4 MB of soldered RAM plus the RAM on the expansion card. If the memory size is incorrect, replace ...
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Apple 550C - page 158
Upgrades Modem and DAA Cards - 5 Modem and DAA Cards Before you begin, remove the following: • Battery/PCMCIA module • Clutch covers • Display access cover • Display assembly • Keyboard • Hard drive • Center base cover • Floppy drive • Daughterboard EMI shield • Top case • Interconnect-to-logic- board cable Modem Card DAA Card ...
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Apple 550C - page 159
Upgrades Modem and DAA Cards - 6 • CPU stiffener • RAM card (if installed) Note: The modem is a Macintosh PowerBook 550c option. This procedure explains how to install the modem and DAA cards and also includes special instructions on how to remove the modem. ...
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Apple 550C - page 160
Upgrades Modem and DAA Cards - 7 1 Slide the modem card under the RAM card guides and connect the modem card to the motherboard. 2 Pull up and remove the modem cap. Modem Cap Modem Card ...
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Apple 550C - page 161
Upgrades Modem and DAA Cards - 8 3 Install the modem port frame on the DAA card. 4 Note: The connector for the DAA card is on the underside of the right end of the card. Connect the DAA card to the motherboard. 5 Install the DAA mounting screw. Modem Card with Modem Port Frame ...
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Apple 550C - page 162
Upgrades Modem and DAA Cards - 9 6 Note: The following page explains how to remove the modem card. To remove the card, you will need to adapt an IC extractor so that it has a wide grip. Grasp an IC extractor by the legs and pull outward. ...
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Apple 550C - page 163
Upgrades Modem and DAA Cards - 1 0 7 To remove the modem card, place the legs of the IC extractor in the notches at the end of the board and pull up. Notch Notch ...
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Apple 550C - page 164
Upgrades PCMCIA Module Upgrade - 1 1 PCMCIA Module Upgrade Before you begin, remove the second (left) battery. Important: Before removing the battery or inserting the PCMCIA expansion module into the computer, use the Macintosh Shut Down command. Otherwise, the computer will shut down automatically and all RAM contents will be lost. Note: The PCMCI ...
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Apple 550C - page 165
Upgrades PCMCIA Module Upgrade - 1 2 Macintosh PowerBook 550c option. The module comes with a protec-tive cap and PCMCIA driver software. 1 Note: You will feel some resistance when you insert the PCMCIA expansion module into the computer. Continue to press the module in until it is firmly seated. Insert the PCMCIA expansion module into the left bat ...
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Apple 550C - page 166
Upgrades PCMCIA Module Upgrade - 1 3 2 Note: Refer to the “PCMCIA Expansion Module User’s Guide” for directions on how to install the module software. Install the PCMCIA expansion module software. Note: Refer to “Battery/ PCMCIA Module” in Take Apart for directions on how to eject the module from the computer. ...
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Apple 550C - page 167
Service Source K Additional Procedures Po werBook 550c ...
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Apple 550C - page 168
Additional Procedures Battery Verification - 1 Battery Verification The Control Strip on the PowerBook 500 Series desktop shows the battery charge and the rate at which the battery is being used. Use a voltmeter to measure the actual battery charge: 1 Set the voltmeter to the 10 volts DC scale. 2 Hold the positive probe of the voltmeter to the posi ...
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Apple 550C - page 169
Additional Procedures Battery Verification - 2 negative probe to the negative terminal. 3 A fully charged battery measures approximately 10.8 volts; a fully discharged battery measures 7.8 volts. Note: If a battery is stored outside the computer for extended periods, its voltage may drop to 5.0. ...
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Apple 550C - page 170
Additional Procedures Backup Battery Verification - 3 Backup Battery Verification The backup battery saves the PRAM and power management information on the logic board when the computer is shut down. To check that the backup battery is working, follow the procedures below. 1 Set the date and time. 2 Perform a Shut Down from the Apple Menu or Specia ...
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Apple 550C - page 171
Additional Procedures Backup Battery Verification - 4 6 To recharge the backup battery, leave the PowerBook plugged in for 48 hours. It is ok to use it while it is charging. 7 If the backup battery appears dead or will not charge, replace the backup battery. ...
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Apple 550C - page 172
Additional Procedures Adapter Verification - 5 Adapter Verification To verify the charge of the AC adapter, • Plug in the AC adapter to a wall socket. • Set a voltmeter to the 10 volts DC scale. • Touch the positive volt- meter probe to the inside of the adapter plug and touch the negative volt- meter probe to the outside of the plug. If the ...
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Apple 550C - page 173
Service Source K Exploded V ie w Macintosh Po werBook 550c ...
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Apple 550C - page 174
Exploded View 1 Display Bezel Kit 076-0516 Display EMI Shield 922-1212 Microphone 922-0783 Inverter Board 922-1445 Interconnect-to-Inverter Cable 922-1554 Clutch 076-0299 Interconnect-to-Display Cable 922-1552 Clutch Cover 922-1582 Battery Contact Cover 922-1182 Main Battery W/Door 661-0055 Modem Cap 922-1585 Rear Door 922-1584 Hard Drive Cable 922 ...
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