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Sony HCD-MD373 - page 1
1 HCD-MD373 SPECIFICA TIONS SERVICE MANUAL COMP ACT DISC DECK RECEIVER — Continued on ne xt page — AEP Model UK Model E Model A ustr alian Model Chinese Model T our ist Model Model Name Using Similar Mechanism NEW Mechanism T ype CDM55A-5SBD32, CDM55C-5BD32 Base Unit T ype BU-5SBD32, BU-5BD32 Optical Pick-up T ype KSS-213BA/F-NP Model Name Usin ...
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Sony HCD-MD373 - page 2
2 SELF-DIA GNOSIS FUNCTION The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur , and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer , refer to the following box in the instruction manual. For details ...
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Sony HCD-MD373 - page 3
3 ITEMS OF ERROR HIST ORY MODE ITEMS AND CONTENTS Selecting the T est Mode Display total rec total play retry err total err err history er refresh tm refresh Details of History No error Read error . PTOC cannot be read (DISC ejected) TOC error . UTOC error (DISC not ejected) Loading error Address cannot be read (Servo has deviated) Displays the rec ...
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Sony HCD-MD373 - page 4
4 CA UTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. MODEL IDENTIFICA TION — BA CK P ANEL — SAFETY-RELA TED COMPONENT W ARNING !! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMA TIC DIA GRAMS AND IN THE P ARTS LIST ARE CRIT ...
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Sony HCD-MD373 - page 5
5 1. SERVICING NO TE .......................................................... 6 2. GENERAL ........................................................................ 16 3. DISASSEMBL Y 3-1. Case ................................................................................... 19 3-2. Front Panel ................................................... ...
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Sony HCD-MD373 - page 6
6 SECTION 1 SER VICING NO TE T ra y (CDM) Mov e the Cam bloc k in the direction of arrow with a finger . 4 P anel board 2 Nut 1 Knob (V OL) 5 Ring (V OL) (Remov e the two cla ws from the F ront panel back side.) 6 Filter (FL) 3 Six screws (BVTP 3x10) 7 Indication plate (FL) CD mechanism deck Optical pick-up b lock Floating screw Clean the lens bloc ...
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Sony HCD-MD373 - page 7
7 MD mechanism deck CD mechanism deck Main board P ower board Amp board CN802 Extension cable (4P) (J-2501-042-A) Extension cable (3P) (J-2501-045-A) CN993 SER VICE POSITION THE MD MECHANISM SER VICE POSITION THE CD MECHANISM SER VICE POSITION THE PO WER BOARD ...
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Sony HCD-MD373 - page 8
8 Cold Reset • The cold reset clears all data inculuding preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer . Pr ocedur e 1: (recommended) Press the RESET button on the back panel. Pr ocedure 2: 1. When the power ON, press the 1 / u button while pressing the PLA Y MODE/TUNING MODE button ...
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Sony HCD-MD373 - page 9
9 Aging Mode • Mode for repeating operations of the CD player automatically . When errors occur: Aging stops and a message indicating that an error has occurred such as “CD MEC ERR” is displayed. (For details of errors, refer to “Error History Display Mode”.) When no errors occur: Aging is repeatedly performed. Procedur e: 1. Load any CD. ...
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Sony HCD-MD373 - page 10
10 • Reading the Mechanism Err or History Display (T o switch the history , press the PLA Y MODE/TUNING MODE button.) Display E@@M**#*$* @@: Error number . 00 is the latest *: Invalid #: Load in operations related D: Operations stopped due to problems other than mechanism related during CLOSE E: Operations stopped due to problems other than mecha ...
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Sony HCD-MD373 - page 11
11 JIG FOR CHECKING BD (MD) BO ARD W A VEFORM The special jig (J-2501-149-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items to be performed are shown as follows. GND : Ground I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser) IOP : For measuring IOP (Check the det ...
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Sony HCD-MD373 - page 12
12 IOP DA T A RECORDING AND DISPLA Y WHEN OPTICAL PICK-UP AND NON-V OLA TILE MEMOR Y (IC171 OF BD (MD) BO ARD) ARE REPLA CED The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory . By recording the value, it will eliminate the need to look at the value on the label of the optical pick-up. When replacing the optical ...
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Sony HCD-MD373 - page 13
13 • 0.9 mW power Specified value : 0.84 to 0.92 mW • 7.0 mW power Specified value : 6.8 to 7.2 mW lop (at 7mW) • Labeled on the optical pickup Iop value ± 10mA • T raverse waveform Specified value : Below 10% offset • Error rate check Specified value : For points a, b, and c C1 error : Below 220 AD error : Below 2 • Error rate check S ...
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Sony HCD-MD373 - page 14
14 RETR Y CA USE DISPLA Y MODE • In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During playback, the “track mode” for obtaining track information will be set. This is useful for locating the faulty part of the unit. • The following will be displayed : During recording ...
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Sony HCD-MD373 - page 15
15 Hexadecimal Bit Binary Higher Bits Lower Bits 84218421 b7 b6 b5 b4 b3 b2 b1 b0 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000 Hexa- decimal Details 01 02 04 08 10 20 40 80 Emphasis OFF Monaural This is 2-bit display . Normally 01. 01:Normal audio. Others:Invalid Audio (Normal) Original Copyright W rite prohibited When 0 ...
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Sony HCD-MD373 - page 16
16 LOCA TION OF PAR TS AND CONTROLS 1 1/u (power) switch 2 MD slot 3 6 (Eject) (MD) button 4 MD indicator 5 (P (MD) button 6 p (MD) button 7 VOLUME (CD) knob 8 (P (CD) button 9 p (CD) button 10 TUNER/BAND button 11 FUNCTION button 12 MD/CD =0/)+ + button 13 MD/CD =0/)+ – button 14 CD indicator 15 6 (CD) button 16 LINE IN jack 17 r REC button 18 C ...
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Sony HCD-MD373 - page 17
17 This section is extracted from instruction manual. ...
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Sony HCD-MD373 - page 18
18 ...
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Sony HCD-MD373 - page 19
19 SECTION 3 DISASSEMBL Y Note: Follow the disassembly procedure in the numerical order given. 3-1. CASE Note: Follow the disassembly procedure in the numerical order given. Case (Page 19) Front panel (Page 20) Main board and Power transformer (Page 21) Optical pick-up (CD) (Page 22) BD (CD) board Sled motor (M102) Spindle motor (M101) (Page 23) Tr ...
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Sony HCD-MD373 - page 20
20 3-3. BA CK P ANEL 3-2. FRONT P ANEL 1 Flat type wire (25 core) 5 Screw (BVTT 3x10) 6 Screw (BVTT 3x6) 8 Screw (BVTT 3x6) 9 Screw (BVTT 3x6) 7 F ront panel b lock (T wo cla ws) 0 MD mechanism bloc k 3 Ground wire (Black) 4 Ground wire (Red) 2 Flat type wire (31 core) Claw Claw Claw Claw Claw Hole Claw 3 Back panel (T wo cla ws) 1 Three screws (BV ...
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Sony HCD-MD373 - page 21
21 3-4. MAIN BO ARD AND PO WER TRANSFORMER Main board SP board P ower board Amp board (CN801) 1 Flat type wire (19 core) 2 Flat type wire (15 core) 7 Screw (BVTP 3x6) 8 Screw (BVTP 3x6) 9 T wo screws (BVTT 3x6) !¡ Four scre ws (BVTT 3x6) !™ P ower transf ormer 3 Connector (4P) 6 Connector (Amp board, CN801) (T ake note of the cla w) 4 Connector ...
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Sony HCD-MD373 - page 22
22 3-6. TRA Y , GEAR AND CAM 4 Belt (CDM55) 6 Pulley (LDG) 9 Gear (A) 8 Gear (B) 7 Roller 2 Push the claw in tne direction of arrow C . 0 Cam (CDM55) 3 Pull out the tra y . 5 Bushing C A B B Release 1 Pull out the tray in the arrow direction A , and release the lock while pressing this claw in the arrow direction B . 3-7. CD BASE UNIT 2 Remov e the ...
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Sony HCD-MD373 - page 23
23 3-9. BD (CD) BOARD , SPINDLE MO T OR (M101) AND SLED MO TOR (M102) IC102 IC101 M101 M102 IC103 2 Remov e the f our solders. 1 Screw (BVTP 2.6x8) !¡ Spindle motor (M101) 5 Sled motor (M102) 0 Sled shaft 6 Gear (M) 7 Flatness gear (P) 8 T wo Insulators (BU) 9 T wo Insulators (BU) 4 T wo screws (P 2x3) 3 BD (CD) board 3-10. MD MECHANISM DECK 2 T w ...
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Sony HCD-MD373 - page 24
24 3-12. BASE UNIT (MB U-5A) AND BD (MD) BO ARD • Note for installation of Slider (CAM) Set the shaft of Cam gear to be at the position in the figure. Set the shaft of Lev er (O/C) to be at the position in the figure. 6 Slider (CAM) 2 Brack et (GUIDE L) 5 Brack et (GUIDE R) 4 T wo screws (BTP 2.6x6) 1 T wo screws (BTP 2.6x6) 3 Leaf spring A When ...
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Sony HCD-MD373 - page 25
25 3-13. O VER WRITE HEAD 1 Flexib le board 2 Screw (P 1.7x6) 3 Over write head (HR901) 3-14. OPTICAL PICK-UP OF MD (KMS-260B/J1N) 1 Screw (B 2x8) 3 Main shaft 2 Leaf spring (SHAFT) 4 Flexib le board 5 Optical pick-up (f or MD) 3-15. SPINDLE MO T OR (M901) AND SLED MO T OR (M902) (MD) 5 Spindle motor (M901) 7 Sled motor (M902) 4 Three screws (B 2x5 ...
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Sony HCD-MD373 - page 26
26 SECTION 4 TEST MODE 4-1. PRECA UTIONS FOR USE OF TEST MODE • As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it. Even if the 6 (MD) button is pressed while the disc is rotating during continuous playback, continuous rec ...
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Sony HCD-MD373 - page 27
27 4-5. SELECTING THE TEST MODE There are 31 types of test modes as shown below . The groups can be switched by pressing the =0 /MD/CD/TUNING – button or )+ /MD/CD/TUNING + button. After selecting the group to be used, press the ENTER/YES “R” button. After setting a certain group, pressing the =0 /MD/CD/TUNING – button or )+ /MD/CD/TUNING + ...
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Sony HCD-MD373 - page 28
28 “CPLAY MID” n “CPLAY OUT” n “CPLAY IN” 4-5-1. Operating the Continuous Playback Mode 1. Entering the continuous playback mode 1 Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.) 2 Press the =0 /MD/CD/TUNING – button or )+ /MD/CD/TUNING + button and display “CPLA Y MODE”. 3 Press th ...
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Sony HCD-MD373 - page 29
29 4-6. FUNCTIONS OF OTHER B UTT ONS Contents Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF . Stops continuous playback and continuous recording. The sled moves to the outer circumference only when this is pressed. The sled moves to the inner circumference only when ...
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Sony HCD-MD373 - page 30
30 ( (MD) * P (MD) * r REC * SYNC LEVEL-SYNC OVER 1 REPEA T TRACK DISC SHUFFLE MONO When Off Contents Display When Lit During continuous playback (CL V : ON) T racking servo OFF Recording mode ON CL V low speed mode ABCD adjustment completed T racking offset cancel ON T racking auto gain OK Focus auto gain OK Pit High reflection CL V S CL V LOCK ME ...
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Sony HCD-MD373 - page 31
31 MD SECTION 5-1. PARTS REPLA CEMENT AND ADJUSTMENT • Check and adjust the MDM and MBU as follows. The procedure changes according to the part replaced SECTION 5 ELECTRICAL ADJUSTMENTS • Abbreviation OP : Optical pick-up OW H: Overwrite head • Temperature compensation offset check • Laser power check • Traverse check • Focus bias check ...
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Sony HCD-MD373 - page 32
32 5-2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSINON T o check the emission of the laser diode during adjustments, never view directly from the top as this may lose your eye-sight. 5-3. PRECA UTIONS FOR USE OF OPTICAL PICK- UP (KMS-260B) As the laser diode in the optical pick-up is easily damaged by static electricity , solder the laser tap of th ...
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Sony HCD-MD373 - page 33
33 5-6. CHECKS PRIOR TO REP AIRS These checks are performed before replacing parts according to “approximate specifications” to determine the faulty locations. For details, refer to “Checks Prior to Parts Replacement and Adjustments” (See page 13). 5-6-1. T emperature Compensation Offset Chec k When performing adjustments, set the internal ...
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Sony HCD-MD373 - page 34
34 9. Press the ENTER/YES “R” button display “EFB = MO-P”. Then, the optical pick-up moves to the pit area automatically and servo is imposed. 10. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not press the =0 /MD/CD TUNING– button or )+ /MD/CD/TUNING+ button. (T raverse W aveform) 11. Press ...
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Sony HCD-MD373 - page 35
35 8. “C1 = AD = ” will be displayed. 9. Check that the C1 error becomes below 80 and the AD error below 2. 10. Press the MENU/NO “R” button to stop playback, and press the 6 (MD) button and remove the disc. 5-7. INITIAL SETTING OF ADJUSTMENT VALUE Note: Mode which sets the adjustment results recorded in the non-volatile memory to the initi ...
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Sony HCD-MD373 - page 36
36 KMS 260A 27X40 B0825 N Iop = 82.5 mA in this case Iop (mA) = Digital voltmeter reading (mV)/1 ( Ω ) 5. Then “LD 7.0 mW $ ” will be displayed. 6. Press the =0 /MD/CD/TUNING – button or )+ / MD/CD/TUNING + button so that the reading of the laser power meter becomes 6.9 to 7.1 mW , press the ENTER/YES “R” but- ton and save it. Note : Do ...
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Sony HCD-MD373 - page 37
37 9. Press the ENTER/YES “R” button, and save the adjustment results in the non-volatile memory . (“EFB = SA VE” will be displayed for a moment.) 10. “EFB = MO-P”. will be displayed. The optical pick-up moves to the pit area automatically and servo is imposed. 1 1. Press the =0 /MD/CD/TUNING – button or )+ / MD/CD/TUNING + button unt ...
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Sony HCD-MD373 - page 38
38 5-13. ERROR RA TE CHECK 5-13-1. CD Error Rate Check Checking Procedur e : 1. Load a check disc (MD) TDYS-1. 2. Press the =0 /MD/CD/TUNING – button or )+ / MD/CD/TUNING + button and display “CPLA Y MODE”. 3. Press the ENTER/YES “R” button twice and display “CPLA Y MID”. 4. The display changes to “C1 = AD = ”. 5. Check that the C ...
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Sony HCD-MD373 - page 39
39 39 NO TE: It is useful to use the jig. for checking the waveform. (Refer to Servicing Note on page 11.) [BD (MD) BO ARD] (SIDE B) CN110 NO TE D101 I+3V IOP TE VC GND IC171 IC121 IC101 IC192 CN101 RF 5-15. ADJUSTING POINTS AND CONNECTING POINTS [BD (MD) BO ARD] (SIDE A) CD SECTION Note: 1. CD Block is basically constructed to operate without adju ...
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Sony HCD-MD373 - page 40
HCD-MD373 40 40 SECTION 6 DIA GRAMS 6-1. CIRCUIT BO ARDS LOCA TION TUNER UNIT i s supplied as the assembled block. SP board Amp board P ower board MD digital board P anel board T uner unit Main board Loading board BD (MD) board BD (CD) boar d SW board ...
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Sony HCD-MD373 - page 41
HCD-MD373 41 41 6-2. BLOCK DIA GRAMS – BD (CD) SECTION – E F A B C D A C RF FF TE D B E F LD PD VCC VC RF SUMMING AMP FOCUS ERROR AMP TRACKING ERROR AMP LD DRIVE Q101 VC BUFFER INTEG- RATOR RF EQ AMP INTEG- RATOR DIGITAL PLL IC101 DIGITAL SERVO DIGITAL SIGNAL PROCESSOR SUBCODE PROCESSOR SERIAL IN INTERFACE SERVO AUTO SEQUENCER SERVO INTERFACE O ...
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Sony HCD-MD373 - page 42
HCD-MD373 42 42 – BD (MD) SECTION (1/2) – HR901 OVER WRITE HEAD HEAD DRIVE Q181,182 3 6 1 2 FILTER PCO FILI FILO CLTV PLL EFM, ACIRC, ENCODER/ DECODER RF AGC & EQ AGCI RFO MORFI MORFO RF AMP 1 2 BPF P-P AT AMP BPF ADAGC VC ANALOG MUX 27 16 17 18 SERIAL PARALLEL DECODER VICONV 20 25 22 23 4 5 6 7 8 9 IV AMP IV AMP E-F BALANCE 14 15 3 VCC VC ...
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Sony HCD-MD373 - page 43
HCD-MD373 43 43 – BD (MD) SECTION (2/2) – 27 73 72 17 16 18 12 19 4 2 26 14 13 24 15 80 79 75 78 82 81 35 37 36 58 63 66 53 51 59 57 74 60 54 65 67 88 56 55 77 87 69 22 21 15 13 12 18 ADDT BCK LRCK DADT 512FS SCTX XINT SQSY DQSY MNT3 MNT2 MNT1 MNT0 SENS SRDT SCLK SWDT XLATCH LIMIT-IN REFLECT PROTECT CHACKIN SW PACK-OUT SW PB P SW REC-P SW LD ON ...
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Sony HCD-MD373 - page 44
HCD-MD373 44 44 – MAIN SECTION – BUFFER Q401 MUX RDATA RCLK X1 X0 X401 4.332 MHz RDS DECODER IC401 X401 4.332 MHz AEP, UK STEREO TUNED DO DI CLK CE MUTE 50 51 54 53 55 52 49 6 9 10 B SELECT SWITCH 12 14 13 SELECT SWITCH 39 26 38 37 36 25 20 21 22 35 MICON INTERFACE BASS TU TC CD MD L A T D A T A C L K R-CH 8 6 5 2 1 12 9 11 10 13 13 14 15 16 61 ...
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Sony HCD-MD373 - page 45
HCD-MD373 45 45 • Indication of transistor THIS NO TE IS COMMON FOR PRINTED WIRING BO ARDS AND SCHEMA TIC DIAGRAMS. (In addition to this, the necessary note is printed in each bloc k.) For schematic diagrams. Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalum ...
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Sony HCD-MD373 - page 46
HCD-MD373 46 46 6-3. PRINTED WIRING BO ARD – BD (CD) SECTION – • See page 40 for Cir cuit Boards Location. (Page 52) MAIN BOARD TP (VC) TP (RF) TP (AGC CON) TP (FE) TP (TE) TP (TEI) ...
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Sony HCD-MD373 - page 47
HCD-MD373 47 47 6-4. SCHEMA TIC DIA GRAM – BD (CD) SECTION – • See page 45 f or W avef orms. • See page 67 f or IC Block Dia grams. • See page 69 f or IC Pin Functions. (Page 55) MAIN BOARD (3/3) TP (VC) TP (TE) AGC CON TP (FE) TP (TE1) TP (RF) TP (FEI) ...
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Sony HCD-MD373 - page 48
HCD-MD373 48 48 6-5. PRINTED WIRING BO ARD – BD (MD) SECTION – • See page 40 for Cir cuit Boards Location. IC101 A-3 IC121 C-3 IC124 C-3 IC152 B-1 IC181 C-1 IC192 C-1 Q101 B-3 Q162 B-3 Q163 B-3 Q181 C-2 Q182 C-2 Ref. No. Location • Semiconductor Location D101 A-1 D181 D-3 D183 D-3 IC103 B-1 IC123 D-2 IC171 D-1 Q102 B-1 Q103 C-1 Q104 B-1 Ref ...
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Sony HCD-MD373 - page 49
HCD-MD373 49 49 (Page 50) (Page 50) (Page 50) (Page 50) (Page 50) (Page 50) (Page 50) 6-6. SCHEMA TIC DIA GRAM – BD (MD) SECTION (1/2) – • See page 45 for W aveforms. • See page 65 for IC Bloc k Diagrams. • See page 71 for IC Pin Functions. ...
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Sony HCD-MD373 - page 50
HCD-MD373 50 50 6-7. SCHEMA TIC DIA GRAM – BD (MD) SECTION (2/2) – • See page 45 for W aveforms. • See page 48 for Printed Wiring Board. • See page 66 for IC Bloc k Dia grams. BA033FP-E2 (Page 49) (Page 49) (Page 49) (Page 49) (Page 49) (Page 49) (Page 49) (Page 56) (Page 56) MD DIGITAL BOARD MD DIGITAL BOARD B C ...
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Sony HCD-MD373 - page 51
HCD-MD373 51 51 6-9. PRINTED WIRING BO ARD – SP SECTION – • See page 40 for Cir cuit Boar ds Location. 6-8. SCHEMA TIC DIA GRAM – SP SECTION – (Page 59) (Page 52) SPEAKER R L (Page 53) (Page 58) ...
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Sony HCD-MD373 - page 52
HCD-MD373 52 52 6-10. PRINTED WIRING BO ARD – MAIN SECTION – • See page 40 for Cir cuit Boards Location. Ref. No. Location • Semiconductor Location D171 E-2 D301 C-10 D302 C-9 D901 B-7 D911 D-7 D912 D-6 D913 D-6 D914 D-6 D921 E-6 D922 E-5 D923 E-5 D924 E-5 D941 E-7 D942 E-5 D943 E-4 D944 E-5 D945 E-4 D946 C-4 IC121 E-11 IC131 B-4 IC171 E-1 ...
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Sony HCD-MD373 - page 53
HCD-MD373 53 53 6-11. SCHEMA TIC DIA GRAM – MAIN SECTION (1/3) – • See page 68 for IC Bloc k Diagrams. (Page 55) (Page 54) (Page 54) (Page 55) (Page 54) (Page 51) ...
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Sony HCD-MD373 - page 54
HCD-MD373 54 54 6-12. SCHEMA TIC DIA GRAM – MAIN SECTION (2/3) – • See page 52 for Printed Wiring Board. • See page 68 for IC Bloc k Diagrams. (Page 62) (Page 55) (Page 55) (Page 55) (Page 55) (Page 55) (Page 55) (Page 56) (Page 53) (Page 53) (Page 53) ...
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Sony HCD-MD373 - page 55
HCD-MD373 55 55 6-13. SCHEMA TIC DIA GRAM – MAIN SECTION (3/3) – • See page 45 for W aveforms. • See page 52 for Printed Wiring Board. • See page 68 for IC Bloc k Diagrams. • See page 75 for IC Pin Functions. (Page 54) (Page 53) (Page 54) (Page 54) (Page 54) (Page 54) (Page 53) (Page 54) (Page 47) (Page 64) (Page 60) ...
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Sony HCD-MD373 - page 56
HCD-MD373 56 56 6-14. SCHEMA TIC DIA GRAM – MD DIGIT AL SECTION – • See page 45 for W aveforms. • See page 67 for IC Bloc k Diagrams. (Page 54) (Page 64) (Page 50) (Page 50) ...
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Sony HCD-MD373 - page 57
HCD-MD373 57 57 6-15. PRINTED WIRING BO ARD – MD DIGIT AL SECTION – • See page 40 for Cir cuit Boards Location. (Page 48) (Page 48) (Page 64) (Page 52) ...
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Sony HCD-MD373 - page 58
HCD-MD373 58 58 6-16. SCHEMA TIC DIA GRAM – AMP SECTION – (Page 51) (Page 62) ...
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Sony HCD-MD373 - page 59
HCD-MD373 59 59 6-17. PRINTED WIRING BO ARD – AMP SECTION – • See page 40 for Cir cuit Boar ds Location. (Page 51) (Page 63) ...
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Sony HCD-MD373 - page 60
HCD-MD373 60 60 6-18. SCHEMA TIC DIA GRAM – P ANEL SECTION – (Page 55) ...
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Sony HCD-MD373 - page 61
HCD-MD373 61 61 6-19. PRINTED WIRING BO ARD – P ANEL SECTION – • See page 40 for Cir cuit Boards Location. Ref. No. Location • Semiconductor Location D602 A-2 D603 A-2 D604 E-4 D605 A-3 D606 D-2 D607 D-2 D608 D-3 D609 A-8 IC601 C-6 IC602 C-8 Q601 C-3 Q602 C-3 Q604 A-1 Q605 A-1 Q606 E-6 Q607 A-1 Q608 C-2 Q609 E-1 Q610 E-3 (Page 52) ...
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Sony HCD-MD373 - page 62
HCD-MD373 62 62 6-20. SCHEMA TIC DIA GRAM – PO WER SECTION – (Page 58) (Page 54) ...
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Sony HCD-MD373 - page 63
HCD-MD373 63 63 6-21. PRINTED WIRING BO ARD – PO WER SECTION – • See page 40 for Cir cuit Boards Location. Ref. No. Location • Semiconductor Location D971 B-3 D972 B-2 D973 B-3 D974 B-2 D975 A-3 D976 A-3 D977 A-3 D978 A-3 D979 A-2 D980 A-3 D981 B-1 D982 A-1 D985 A-1 D986 A-5 D987 A-5 D991 A-4 D992 C-2 D993 C-2 Q971 B-2 Q972 A-5 Q973 A-5 Q97 ...
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Sony HCD-MD373 - page 64
HCD-MD373 64 64 6-22. SCHEMA TIC DIA GRAM – BD SWITCH SECTION – 6-23. PRINTED WIRING BO ARD – BD SWITCH SECTION – • See page 40 for Cir cuit Boards Location. 6-24. SCHEMA TIC DIA GRAM – LO ADING SECTION – 6-25. PRINTED WIRING BO ARD – LO ADING SECTION – • See page 40 f or Cir cuit Boards Location. (Page 52) MD DIGITAL BOARD (Pag ...
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Sony HCD-MD373 - page 65
65 6-26. IC BLOCK DIA GRAMS • BD (MD) Board (1/2) IC101 CXA2523AR –1 –2 + – IVR BB + – IVR AA + – IVR CC + – IVR DD + – IVR + – EE EE' EFB TESW PTGR 48 MORFO 47 MORFI 46 RFO 45 OPN 44 OPO 43 ADDC 42 COMPP 41 COMPO 40 AGCI 39 RF AGC 38 RF 37 PEAK 36 BOTM 35 ABCD 34 FE 33 AUX 32 ADFG 31 ADAGC 30 ADIN 29 ADFM 28 SE 27 CSLED 26 T ...
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Sony HCD-MD373 - page 66
66 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 123456789 10 11 12 13 14 15 16 GND VG IN4R IN4F VM4 OUT4F PGND4 OUT4R VM34 OUT3R PGND3 OUT3F VM3 IN3F IN3R PSB CAPA– CAPA+ IN2R IN2F VM2 OUT2F PGND2 OUT2R VM12 OUT1R PGND1 OUT1F VM1 IN1F IN1R V DD CHARGE PUMP. OSC INTERFACE AMP INTERFACE AMP AMP INTERFACE PREDRIVE PREDRIVE PREDRIVE PREDRIVE AMP I ...
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Sony HCD-MD373 - page 67
67 • BD (CD) Board IC101 CXD2587Q TE RFDC CE IGEN AVSS0 ADIO AVDD0 CLTV FILO AVSS3 VSS AVDD3 DOUT VDD PCO FILI ASYO ASYI RFAC BIAS SSTP DFCT MIRR MDP LOCK FOK SFDR VSS TEST FRDR FE VC COUT SE XTSL TES1 SRDR TFDR FFDR TRDR 2 1 70 71 68 69 66 67 64 65 62 61 63 73 74 72 75 76 77 78 79 80 4 XRST 3 SQCK SQSO 5 9 8 7 6 56 60 53 54 55 59 57 58 51 52 48 ...
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Sony HCD-MD373 - page 68
68 1 2 3 4 5 6 7 8 9 10 GND MOTOR DRIVE NOISE FILTER CLAMP FWD.IN REV.IN VCC 1 VCC 2 NOISE FILTER MOTOR DRIVE MOTOR DRIVE MOTOR DRIVE T.S.D O.C.P FWD/REV/STOP CONTROL LOGIC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 2X0 X2 VDD X1 XCOM X0 X3 A B VSS VEE INH 2X1 2X3 2XCOM 2X2 SW19 BASS BOOST SW FIN AMP2 470 VR2 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3 ...
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Sony HCD-MD373 - page 69
69 6-27. IC PIN FUNCTIONS • IC101 DIGIT AL SIGNAL PROCESSOR (CXD2587Q) (BD(CD) boar d) SQSO SQCK XRST SYSM DA T A XLA T CLOK SENS SCLK VDD A TSK SPOA SPOB XLON WFCK XUGF XPCK GFS C2PO SCOR COUT MIRR DFCT FOK LOCK MDP SSTP SFDR SRDR TFDR TRDR FFDR FRDR VSS TEST TES1 XTSL VC FE SE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 ...
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Sony HCD-MD373 - page 70
70 • Abbreviation EFM : Eight to Fourteen Modulation PLL : Phase Locked Loop Pin No. Pin Name I/O Function TE CE RFDC ADIO A VSS0 IGEN A VDD0 ASYO ASYI BIAS RF AC A VSS3 CL TV FILO FILI PCO A VDD3 VSS VDD DOUT LRCK PCMD BCK EMPH XVDD XT AI XT AO XVSS A VDD1 AOUT1 AIN1 LOUT1 A VSS1 A VSS2 LOUT2 AIN2 AOUT2 A VDD2 RMUT LMUT 41 42 43 44 45 46 47 48 4 ...
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Sony HCD-MD373 - page 71
71 • IC101 RF Amplifier (CXA2523AR) (BD(MD) board) Pin No. Pin Name I/O Function I J VC A to F PD APC APCREF GND TEMPI TEMPR SWDT SCLK XLA T XSTBY F0CNT VREF EQADJ 3T ADJ Vcc WBLADJ TE CSLED SE ADFM ADIN ADAGC ADFG AUX FE ABCD BOTM PEAK RF RF AGC AGCI COMPO COMPP ADDC OPO OPN RFO MORFI MORFO I I O I I O I — I O I I I I I O I/O I/O — I/O O — ...
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Sony HCD-MD373 - page 72
72 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 to 34 35 36 to 40 41 42 43 44 45 46 47 • IC121 Digital Signal Processor , Digital Serv o Signal Processor , EFM/A CIRC Encoder/Decoder , Shoc k-proof Memory Controller , A TRAC Encoder/Decoder , 2M Bit DRAM (CXD2654R) (BD (MD) board) Function Pin No. Pin Name I ...
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Sony HCD-MD373 - page 73
73 Function Pin No. Pin Name I/O 48 49 50, 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 D1 D0 D2, D3 MVCI ASYO ASYI A VDD BIAS RFI A VSS PCO FILI FILO CL TV PEAK BOTM ABCD FE AUX1 VC ADIO A VDD ADR T ADRB A VSS SE TE DCHG APC ADFG F0CNT XLRF CKRF DTRF APCREF TEST0 TRDR Data input/output fo ...
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Sony HCD-MD373 - page 74
74 Function Pin No. Pin Name I/O 86 87 88 89 90 91 92 93 94 95 96 to 98 99 100 TFDR DVDD FFDR FRDR FS4 SRDR SFDR SPRD SPFD FGIN TEST1 to TEST3 DVSS EFMO O — O O O O O O O I (S) I — O T racking servo drive PWM output (+) +3V power supply (Digital) Focus servo drive PWM output (+) Focus servo drive PWM output (–) 176.4 kHz clock signal output ( ...
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Sony HCD-MD373 - page 75
75 • IC501 MASTER CONTROL (M30620ECFP-A21) (MAIN boar d) Pin No. Pin Name I/O Function 1 STK-POWER O Power amp ON/OFF signal output 2 P O Power ON/OFF signal output (Not used) 3 F-R Y O Front speaker relay control output 4 R-R Y O Rear speaker relay control output (Not used) 5 CD-POWER O CD power on signal output 6 T A-MUTE O Line mute ON/OFF sig ...
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Sony HCD-MD373 - page 76
76 Pin No. Pin Name I/O Function 50 STEREO I Stereo signal input from the tuner 51 TUNED I T uned signal input from the tuner 52 ST -CE O Tuner chip enable output 53 ST -DOUT O T uner data output 54 ST -DIN I T uner data input 55 ST -CLK O Tuned clock output 56 SENS I BD Condition signal input 57 HDLD O Mode hold signal output 58 CD-LA T O CD latch ...
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Sony HCD-MD373 - page 77
77 SECTION 7 EXPLODED VIEWS 7-1. CASE AND FRONT P ANEL SECTION NOTE: • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. • The mechanical parts with no reference number in the exploded views are not supplied. • Hardware (# mark) list and accesso ...
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Sony HCD-MD373 - page 78
78 7-2. CHASSIS SECTION Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 51 A-4426-076-A AMP BOARD, COMPLETE 52 A-4426-081-A POWER BOARD, COMPLETE (AEP ,UK) 52 A-4426-088-A POWER BOARD, COMPLETE (EXCEPT AEP ,UK) 53 4-221-082-11 P ANEL, BACK (AEP ,UK) 53 4-221-082-31 P ANEL, BACK (EXCEPT AEP ,UK) * 54 4-930-336-71 FOOT (FEL ...
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Sony HCD-MD373 - page 79
79 7-3. MD MECHANISM DECK (MDM-5A) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-668-111-11 SW BOARD * 102 4-996-217-01 CHASSIS 103 4-996-223-01 INSULA TOR (F) * 104 4-996-218-01 BRACKET (GUIDE R) 105 4-996-277-01 SPRING (O/C), TENSION 106 4-996-226-01 LEVER (O/C) 107 4-999-347-01 INSULA TOR (R) * 108 4-996-225-0 ...
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Sony HCD-MD373 - page 80
80 7-4. MD BASE UNIT (MBU-5A) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 151 A-4699-893-A BD (MD) BOARD, COMPLETE 152 3-372-761-01 SCREW (M1.7), T APPING * 153 4-996-267-01 BASE (BU-D) * 154 4-996-255-01 BASE (BU-C) 155 4-900-590-01 SCREW , PRECISION SMALL 156 4-996-258-01 SPRING, COMPRESSION 157 4-996-262-01 GEAR ( ...
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Sony HCD-MD373 - page 81
81 7-5. CD MECHANISM DECK (CDM55A-5SBD32) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 201 4-925-315-31 DAMPER 202 1-674-336-11 LOADING BOARD 203 4-220-231-01 TRA Y (CDM) 204 4-220-229-01 LEVER (SW) 205 4-220-239-01 SPRING, TORSION 206 4-220-237-01 GEAR (A) 207 4-220-238-01 GEAR (B) 208 4-220-234-01 PULLEY (LDG) 209 4-2 ...
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Sony HCD-MD373 - page 82
82 7-6. CD BASE UNIT (BU-5SBD32) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 251 4-951-620-01 SCREW (2.6X8), +BVTP * 252 A-4724-375-A BD (CD) BOARD, COMPLETE 253 4-917-565-01 SHAFT , SLED 254 4-951-940-01 INSULA TOR (BU) ! 255 8-848-379-31 OPTICAL PICK-UP KSS-213BA/F-NP 256 1-769-069-11 WIRE (FLA T TYPE) (16 CORE) 257 ...
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Sony HCD-MD373 - page 83
83 7-7. CD MECHANISM DECK (CDM55C-5BD32) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 301 302 303 304 305 306 307 308 309 310 311 313 314 315 316 317 318 319 M103 S1 BU-5BD32 not supplied #11 #11 302 303 313 314 314 314 301 317 316 316 318 315 M103 S1 (CDM identification: black colored holder (A T) (319), pulley (313) w ...
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Sony HCD-MD373 - page 84
84 7-8. CD BASE UNIT (BU-5BD32) Ref. No. Ref. No. 351 * 352 353 354 ! 355 356 357 358 M101 M102 The components identified by mark ! or dotted line with mark ! are critical for safety . Replace only with part number specified. 355 356 357 354 M102 358 351 352 354 M101 (including r C) 353 r C #9 (BU identification: metal tur ntable without magnet) Ve ...
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Sony HCD-MD373 - page 85
8 5 • CAP ACITORS uF : µ F • COILS uH : µ H • Abbreviation HK : Hong Kong model SP : Singapore model MY : Malaysia model AR : Ar gentine model AUS : Australian model KR : Korea model CH : Chinese model JE : T ourist model • Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or ...
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Sony HCD-MD373 - page 86
8 6 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R853 1-249-437-11 CARBON 47K 5% 1/4W R854 1-249-437-11 CARBON 47K 5% 1/4W R855 1-249-417-11 CARBON 1K 5% 1/4W F R856 1-249-437-11 CARBON 47K 5% 1/4W R857 1-260-103-11 CARBON 2.2K 5% 1/2W R858 1-260-103-11 CARBON 2.2K 5% 1/2W ! R859 1-217-151-00 MET AL 0.22 10% 2W R860 1-2 ...
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Sony HCD-MD373 - page 87
8 7 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R158 1-216-111-00 METAL CHIP 390K 5% 1/10W R159 1-216-101-00 METAL CHIP 150K 5% 1/10W R161 1-216-308-00 METAL CHIP 4.7 5% 1/10W R162 1-216-101-00 METAL CHIP 150K 5% 1/10W R171 1-216-078-00 RES,CHIP 16K 5% 1/10W R172 1-216-073-00 METAL CHIP 10K 5% 1/10W R173 1-216-077-91 R ...
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Sony HCD-MD373 - page 88
8 8 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark L106 1-414-813-11 FERRITE 0uH L121 1-414-813-11 FERRITE 0uH L122 1-414-813-11 FERRITE 0uH L151 1-412-029-11 INDUCTOR CHIP 10uH L152 1-412-029-11 INDUCTOR CHIP 10uH L153 1-412-032-11 INDUCTOR CHIP 100uH L154 1-412-032-11 INDUCTOR CHIP 100uH L161 1-414-813-11 FERRITE 0uH L1 ...
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Sony HCD-MD373 - page 89
8 9 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C358 1-163-251-11 CERAMIC CHIP 100PF 5% 50V C359 1-163-251-11 CERAMIC CHIP 100PF 5% 50V C360 1-163-251-11 CERAMIC CHIP 100PF 5% 50V C362 1-163-038-91 CERAMIC CHIP 0.1uF 25V C363 1-163-251-11 CERAMIC CHIP 100PF 5% 50V C503 1-126-206-11 ELECT CHIP 100uF 20% 6.3V C509 1-126- ...
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Sony HCD-MD373 - page 90
90 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C161 1-126-933-11 ELECT 100uF 20% 16V C166 1-162-282-31 CERAMIC 100PF 10% 50V C167 1-162-294-31 CERAMIC 0.001uF 10% 50V C171 1-164-159-11 CERAMIC 0.1uF 50V C172 1-162-306-11 CERAMIC 0.01uF 30% 16V C173 1-126-933-11 ELECT 100uF 20% 16V C174 1-164-159-11 CERAMIC 0.1uF 50V C1 ...
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Sony HCD-MD373 - page 91
91 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark MAIN D922 8-719-911-19 DIODE 1SS133T -72 D923 8-719-911-19 DIODE 1SS133T -72 D924 8-719-911-19 DIODE 1SS133T -72 D941 8-719-911-19 DIODE 1SS133T -72 D942 8-719-911-19 DIODE 1SS133T -72 D943 8-719-911-19 DIODE 1SS133T -72 D944 8-719-911-19 DIODE 1SS133T -72 D945 8-719-911-1 ...
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Sony HCD-MD373 - page 92
92 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark MAIN R402 1-249-417-11 CARBON 1K 5% 1/4W F (AEP ,UK) R403 1-249-429-11 CARBON 10K 5% 1/4W (AEP ,UK) R404 1-259-880-11 CARBON 2.2M 5% 1/4W (AEP ,UK) R405 1-249-417-11 CARBON 1K 5% 1/4W F (AEP ,UK) R501 1-247-807-31 CARBON 100 5% 1/4W R502 1-249-417-11 CARBON 1K 5% 1/4W F R5 ...
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Sony HCD-MD373 - page 93
93 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4426-073-A P ANEL BOARD, COMPLETE ********************** * 1-690-880-31 LEAD (WITH CONNECTOR) 4-221-103-01 HOLDER (FL) < CAP ACITOR > C601 1-162-306-11 CERAMIC 0.01uF 30% 16V C602 1-162-306-11 CERAMIC 0.01uF 30% 16V C603 1-124-261-00 ELECT 10uF 20% 50V C604 1-162-3 ...
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Sony HCD-MD373 - page 94
94 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R651 1-249-429-11 CARBON 10K 5% 1/4W R652 1-249-435-11 CARBON 33K 5% 1/4W R681 1-162-600-11 CERAMIC 0.0047uF 30% 16V R682 1-249-441-11 CARBON 100K 5% 1/4W R686 1-249-425-11 CARBON 4.7K 5% 1/4W F R687 1-249-441-11 CARBON 100K 5% 1/4W < SWITCH > S601 1-473-392-11 ENCOD ...
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Sony HCD-MD373 - page 95
95 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark PO WER SP SW The components identified by mark ! or dotted line with mark ! are critical for safety . Replace only with part number specified. < SWITCH > ! S991 1-571-309-11 SWITCH (VOL TAGE SELESTOR) (AUS,AR,HK,JE,MY ,SP ,KR,CH) < TRANSFORMER > ! T900 1-433-96 ...
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Sony HCD-MD373 - page 96
96 Ref. No. Part No. Description Remark HCD-MD373 ************* HARDWARE LIST ************* #1 7-685-647-79 SCREW +BVTP 3X10 TYPE2 TT(B) #2 7-685-650-91 SCREW +BVTP 3X16 TYPE2 TT(B) #3 7-685-871-01 SCREW +BVTT 3X6 (S) #4 7-685-533-19 SCREW +BTP 2.6X6 TYPE2 N-S #11 7-685-534-19 SCREW +BTP 2.6X8 TYPE2 N-S #5 7-627-852-08 SCREW ,PRECISION +P 1.7X2.5 # ...
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Sony HCD-MD373 - page 97
HCD-MD373 97 MEMO ...
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Sony HCD-MD373 - page 98
HCD-MD373 REVISION HIST OR Y Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. V er . Date Description of Revision 1.1 2001.06 Addition of CD mechanism (CDM55C-5BD32) and base unit (BU-5BD32). (SPM-01016) 1.0 1999.08 New . ...
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