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HCD-MD373 service manual Memo
Models:
HCD-MD373
1
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Specs
Parts list
HCD-MD373 SECTION DIAGRAMS
For printed wiring boards
Cold Reset
Section Disassembly
Procedure
Error rate display
•Signal Path Cd
Section Electrical Adjustments
Page 97
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HCD-MD373
MEMO
97
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Contents
Sony Corporation
SPECIFICATIONS
9-928-998-12
SERVICE MANUAL
SELF-DIAGNOSISFUNCTION
Table of Error Codes
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Selecting the Test Mode
Flexible Circuit Board Repairing
Notes on chip component replacement
MODEL IDENTIFICATION - BACK PANEL
3. DISASSEMBLY
TABLE OF CONTENTS
6. DIAGRAMS
Ver 1.1
CLEANING THE OPTICAL PICKUP CD PLAYER
DRAWING OUT THE TRAY DURING POWER OFF
SECTION SERVICING NOTE
REMOVING THE INDICATION PLATE FL
SERVICE POSITION THE CD MECHANISM
SERVICE POSITION THE MD MECHANISM
SERVICE POSITION THE POWER BOARD
Power board
Procedure 1: recommended
Cold Reset
Procedure
Hot Reset
When no errors occur
When errors occur
Error History Display Mode
Aging Mode
•Reading the BD Error History Display
• Reading the Mechanism Error History Display
JIG FOR CHECKING BD MD BOARD WAVEFORM
Display Precedure
Record Precedure
FORCED RESET
CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS
MAIN BOARD Component Side
Procedure
Precedure
RETRY CAUSE DISPLAY MODE
Reading the Display
Example
Hexadecimal nBinary Conversion Table
Reading the Display
LOCATION OF PARTS AND CONTROLS
SECTION GENERAL
Front Panel
Page
Page
3-1.CASE
SECTION DISASSEMBLY
3-3.BACK PANEL
3-2.FRONT PANEL
3-5.CD MECHANISM DECK
3-4.MAIN BOARD AND POWER TRANSFORMER
3-7.CD BASE UNIT
3-6.TRAY, GEAR AND CAM
3-8.OPTICAL PICK-UPSECTION OF CD KSS-213BA/F-NP
3-10.MD MECHANISM DECK
• Note for installation of Slider CAM
3-14.OPTICAL PICK-UPOF MD KMS-260B/J1N
3-13.OVER WRITE HEAD
3-15.SPINDLE MOTOR M901 AND SLED MOTOR M902 MD
4-2.SETTING THE TEST MODE
4-1.PRECAUTIONS FOR USE OF TEST MODE
Procedure 1: Press the
Procedure 2: Press the
4-5.SELECTING THE TEST MODE
4-5-3. Non-VolatileMemory Mode EEP MODE
4-5-1.Operating the Continuous Playback Mode
4-6.FUNCTIONS OF OTHER BUTTONS
2. Error rate display
4-7.TEST MODE DISPLAYS
1. Mode display
Contents
MEANINGS OF OTHER DISPLAYS
When Lit
When Off
MD SECTION 5-1.PARTS REPLACEMENT AND ADJUSTMENT
SECTION ELECTRICAL ADJUSTMENTS
5-5.CREATING CONTINUOUSLY RECORDED DISC
5-4.PRECAUTIONS FOR ADJUSTMENTS
Optical pick-upflexible board
5-6-2.Laser Power Check
Checking Procedure
Connection Checking Procedure
5-6.CHECKS PRIOR TO REPAIRS
CD Error Rate Check
5-6-5.C PLAY Checking MO Error Rate Check
5-6-4.Focus Bias Check
5-6-6. Self-Recording/playbackCheck
5-10.LASER POWER ADJUSTMENT
5-7.INITIAL SETTING OF ADJUSTMENT VALUE
Setting Procedure
Recording Procedure
Adjusting Procedure
5-11.TRAVERSE ADJUSTMENT
Specified Value
Connection
Adjusting Procedure
5-12.FOCUS BIAS ADJUSTMENT
5-15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT
5-13.ERROR RATE CHECK
5-13-1.CD Error Rate Check
5-13-2.MO Error Rate Check
CD SECTION
5-15.ADJUSTING POINTS AND CONNECTING POINTS
BD MD BOARD SIDE A
BD MD BOARD SIDE B
4040
HCD-MD373 SECTION DIAGRAMS
6-1.CIRCUIT BOARDS LOCATION
TUNER UNIT is supplied as the assembled block
•SIGNAL PATH CD
6-2.BLOCK DIAGRAMS – BD CD SECTION –
HCD-MD373
Page
– BD MD SECTION 1/2 –
4242
R-chis omitted
Siganl path
Page
– BD MD SECTION 2/2 –
HCD-MD373
Page
– MAIN SECTION –
4444
HCD-MD373
Page
For printed wiring boards
For schematic diagrams
WAVEFORMS – BD CD SECTION –
– BD MD 1/2 SECTION –
• See page 40 for Circuit Boards Location
6-3.PRINTED WIRING BOARD – BD CD SECTION –
HCD-MD373
Page
•See page 67 for IC Block Diagrams
6-4.SCHEMATIC DIAGRAM – BD CD SECTION –
See page 45 for Waveforms
•See page 69 for IC Pin Functions
•Semiconductor Location
6-5.PRINTED WIRING BOARD - BD MD SECTION
HCD-MD373
Page
•See page 65 for IC Block Diagrams
6-6.SCHEMATIC DIAGRAM – BD MD SECTION 1/2 –
•See page 71 for IC Pin Functions
HCD-MD373
•See page 48 for Printed Wiring Board
6-7.SCHEMATIC DIAGRAM - BD MD SECTION 2/2
•See page 66 for IC Block Diagrams
HCD-MD373
6-9.PRINTED WIRING BOARD – SP SECTION –
6-8.SCHEMATIC DIAGRAM - SP SECTION
Page
Page
•See page 40 for Circuit Boards Location
6-10.PRINTED WIRING BOARD – MAIN SECTION –
HCD-MD373
Page
• See page 68 for IC Block Diagrams
6-11.SCHEMATIC DIAGRAM – MAIN SECTION 1/3 –
HCD-MD373
Page
•See page 52 for Printed Wiring Board
6-12.SCHEMATIC DIAGRAM – MAIN SECTION 2/3 –
•See page 68 for IC Block Diagrams
HCD-MD373
Page Page
6-13.SCHEMATIC DIAGRAM - MAIN SECTION 3/3
See page 75 for IC Pin Functions
See page 52 for Printed Wiring Board
•See page 67 for IC Block Diagrams
6-14.SCHEMATIC DIAGRAM – MD DIGITAL SECTION –
HCD-MD373
Page
Page Page Page Page
6-15.PRINTED WIRING BOARD – MD DIGITAL SECTION –
HCD-MD373
• See page 40 for Circuit Boards Location
HCD-MD373
6-16.SCHEMATIC DIAGRAM – AMP SECTION –
Page
Page
HCD-MD373
6-17.PRINTED WIRING BOARD – AMP SECTION –
Page Page
See page 40 for Circuit Boards Location
HCD-MD373
6-18.SCHEMATIC DIAGRAM - PANEL SECTION
Page
• Semiconductor Location
6-19.PRINTED WIRING BOARD – PANEL SECTION –
HCD-MD373
Page
HCD-MD373
6-20.SCHEMATIC DIAGRAM – POWER SECTION –
Page Page
HCD-MD373
6-21.PRINTED WIRING BOARD – POWER SECTION –
Page
Page
6-23.PRINTED WIRING BOARD – BD SWITCH SECTION –
6-22.SCHEMATIC DIAGRAM – BD SWITCH SECTION –
6-24.SCHEMATIC DIAGRAM – LOADING SECTION –
6-25.PRINTED WIRING BOARD – LOADING SECTION –
• BD MD Board 1/2
6-26.IC BLOCK DIAGRAMS
IC101 CXA2523AR
• BD MD Board 2/2
IC152 BH6511FS-E2
IC121 CXD2654R
IC101 CXD2587Q
• BD CD Board
C103 CXA2568M-T6
• MD DIGITAL Board
IC171 LB1641
MAIN Board 3/3
• MAIN Board 1/3
IC302 MC14052B
6-27.IC PIN FUNCTIONS
Tracking error signal input
• IC101 RF Amplifier CXA2523AR BDMD board
MNT0 FOK
Data input/output for DRAM
TFDR
IC501 MASTER CONTROL M30620ECFP-A21MAIN board
STEREO
7-1.CASE AND FRONT PANEL SECTION 11 20
SECTION EXPLODED VIEWS
59 #3
7-2.CHASSIS SECTION 52
61 54
124 113 111112 117 118 114
7-3.MD MECHANISM DECK MDM-5A 113 110 107
120 122 123
103 102 101
163 170166
7-4.MD BASE UNIT MBU-5A 152 164
162 161
157 152 152
201 204 203
7-5.CD MECHANISM DECK CDM55A-5SBD32
214 215 217
Ver
255 256
7-6.CDBASE UNIT BU-5SBD32
253
258 251
315 317
7-7.CD MECHANISM DECK CDM55C-5BD32
314 314
Ver 1.1
BU identification metal turntable without magnet
7-8.CDBASE UNIT BU-5BD32
355 356
353 354
SECTION ELECTRICAL PARTS LIST
BD CD
BD CD
BD MD
BD MD
MD DIGITAL
MD DIGITAL LOADING MAIN
MAIN
Ref. No
MAIN
Part No
MAIN
PANEL
PANEL
POWER
POWER
Ver
HCD-MD373
Ref. No
HCD-MD373
MEMO
BU-5BD32
HCD-MD373 REVISION HISTORY
1999.08
Date