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HCD-MD373 service manual Schematic Diagram – Power Section, Page Page
Models:
HCD-MD373
1
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Specifications
Install
Parts list
HCD-MD373 SECTION DIAGRAMS
Notes on chip component replacement
Adjusting Points And Connecting Points
Cold Reset
Section Disassembly
Procedure
• Reading the Mechanism Error History Display
Page 62
Image 62
HCD-MD373
6-20.
SCHEMATIC DIAGRAM – POWER SECTION –
(Page 58)
(Page 54)
62 62
Page 61
Page 63
Page 62
Image 62
Page 61
Page 63
Contents
9-928-998-12
SPECIFICATIONS
Sony Corporation
SERVICE MANUAL
SELF-DIAGNOSISFUNCTION
Selecting the Test Mode
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Table of Error Codes
MODEL IDENTIFICATION - BACK PANEL
Notes on chip component replacement
Flexible Circuit Board Repairing
6. DIAGRAMS
TABLE OF CONTENTS
3. DISASSEMBLY
Ver 1.1
SECTION SERVICING NOTE
DRAWING OUT THE TRAY DURING POWER OFF
CLEANING THE OPTICAL PICKUP CD PLAYER
REMOVING THE INDICATION PLATE FL
SERVICE POSITION THE POWER BOARD
SERVICE POSITION THE MD MECHANISM
SERVICE POSITION THE CD MECHANISM
Power board
Procedure
Cold Reset
Procedure 1: recommended
Hot Reset
Error History Display Mode
When errors occur
When no errors occur
Aging Mode
• Reading the Mechanism Error History Display
•Reading the BD Error History Display
JIG FOR CHECKING BD MD BOARD WAVEFORM
Record Precedure
Display Precedure
MAIN BOARD Component Side
CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS
FORCED RESET
Procedure
Reading the Display
RETRY CAUSE DISPLAY MODE
Precedure
Example
Reading the Display
Hexadecimal nBinary Conversion Table
Front Panel
SECTION GENERAL
LOCATION OF PARTS AND CONTROLS
Page
Page
SECTION DISASSEMBLY
3-1.CASE
3-2.FRONT PANEL
3-3.BACK PANEL
3-4.MAIN BOARD AND POWER TRANSFORMER
3-5.CD MECHANISM DECK
3-8.OPTICAL PICK-UPSECTION OF CD KSS-213BA/F-NP
3-6.TRAY, GEAR AND CAM
3-7.CD BASE UNIT
3-10.MD MECHANISM DECK
• Note for installation of Slider CAM
3-15.SPINDLE MOTOR M901 AND SLED MOTOR M902 MD
3-13.OVER WRITE HEAD
3-14.OPTICAL PICK-UPOF MD KMS-260B/J1N
Procedure 1: Press the
4-1.PRECAUTIONS FOR USE OF TEST MODE
4-2.SETTING THE TEST MODE
Procedure 2: Press the
4-5.SELECTING THE TEST MODE
4-5-1.Operating the Continuous Playback Mode
4-5-3. Non-VolatileMemory Mode EEP MODE
4-7.TEST MODE DISPLAYS
2. Error rate display
4-6.FUNCTIONS OF OTHER BUTTONS
1. Mode display
When Lit
MEANINGS OF OTHER DISPLAYS
Contents
When Off
SECTION ELECTRICAL ADJUSTMENTS
MD SECTION 5-1.PARTS REPLACEMENT AND ADJUSTMENT
Optical pick-upflexible board
5-4.PRECAUTIONS FOR ADJUSTMENTS
5-5.CREATING CONTINUOUSLY RECORDED DISC
5-6-2.Laser Power Check
5-6-1.Temperature Compensation Offset Check
Checking Procedure
Connection Checking Procedure
5-6-4.Focus Bias Check
5-6-5.C PLAY Checking MO Error Rate Check
CD Error Rate Check
5-6-6. Self-Recording/playbackCheck
5-10.LASER POWER ADJUSTMENT
5-7.INITIAL SETTING OF ADJUSTMENT VALUE
5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT
Setting Procedure
Specified Value
5-11.TRAVERSE ADJUSTMENT
Adjusting Procedure
Connection
5-12.FOCUS BIAS ADJUSTMENT
Adjusting Procedure
5-13-1.CD Error Rate Check
5-13.ERROR RATE CHECK
5-15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT
5-13-2.MO Error Rate Check
BD MD BOARD SIDE A
5-15.ADJUSTING POINTS AND CONNECTING POINTS
CD SECTION
BD MD BOARD SIDE B
6-1.CIRCUIT BOARDS LOCATION
HCD-MD373 SECTION DIAGRAMS
4040
TUNER UNIT is supplied as the assembled block
HCD-MD373
6-2.BLOCK DIAGRAMS – BD CD SECTION –
•SIGNAL PATH CD
Page
R-chis omitted
4242
– BD MD SECTION 1/2 –
Siganl path
HCD-MD373
– BD MD SECTION 2/2 –
Page
Page
HCD-MD373
4444
– MAIN SECTION –
Page
WAVEFORMS – BD CD SECTION –
For schematic diagrams
For printed wiring boards
– BD MD 1/2 SECTION –
HCD-MD373
6-3.PRINTED WIRING BOARD – BD CD SECTION –
• See page 40 for Circuit Boards Location
Page
See page 45 for Waveforms
6-4.SCHEMATIC DIAGRAM – BD CD SECTION –
•See page 67 for IC Block Diagrams
•See page 69 for IC Pin Functions
HCD-MD373
6-5.PRINTED WIRING BOARD - BD MD SECTION
•Semiconductor Location
Page
•See page 71 for IC Pin Functions
6-6.SCHEMATIC DIAGRAM – BD MD SECTION 1/2 –
•See page 65 for IC Block Diagrams
HCD-MD373
•See page 66 for IC Block Diagrams
6-7.SCHEMATIC DIAGRAM - BD MD SECTION 2/2
•See page 48 for Printed Wiring Board
HCD-MD373
Page
6-8.SCHEMATIC DIAGRAM - SP SECTION
6-9.PRINTED WIRING BOARD – SP SECTION –
Page
HCD-MD373
6-10.PRINTED WIRING BOARD – MAIN SECTION –
•See page 40 for Circuit Boards Location
Page
HCD-MD373
6-11.SCHEMATIC DIAGRAM – MAIN SECTION 1/3 –
• See page 68 for IC Block Diagrams
Page
•See page 68 for IC Block Diagrams
6-12.SCHEMATIC DIAGRAM – MAIN SECTION 2/3 –
•See page 52 for Printed Wiring Board
HCD-MD373
See page 75 for IC Pin Functions
6-13.SCHEMATIC DIAGRAM - MAIN SECTION 3/3
Page Page
See page 52 for Printed Wiring Board
HCD-MD373
6-14.SCHEMATIC DIAGRAM – MD DIGITAL SECTION –
•See page 67 for IC Block Diagrams
Page
HCD-MD373
6-15.PRINTED WIRING BOARD – MD DIGITAL SECTION –
Page Page Page Page
• See page 40 for Circuit Boards Location
Page
6-16.SCHEMATIC DIAGRAM – AMP SECTION –
HCD-MD373
Page
Page Page
6-17.PRINTED WIRING BOARD – AMP SECTION –
HCD-MD373
See page 40 for Circuit Boards Location
Page
6-18.SCHEMATIC DIAGRAM - PANEL SECTION
HCD-MD373
HCD-MD373
6-19.PRINTED WIRING BOARD – PANEL SECTION –
• Semiconductor Location
Page
Page Page
6-20.SCHEMATIC DIAGRAM – POWER SECTION –
HCD-MD373
Page
6-21.PRINTED WIRING BOARD – POWER SECTION –
HCD-MD373
Page
6-24.SCHEMATIC DIAGRAM – LOADING SECTION –
6-22.SCHEMATIC DIAGRAM – BD SWITCH SECTION –
6-23.PRINTED WIRING BOARD – BD SWITCH SECTION –
6-25.PRINTED WIRING BOARD – LOADING SECTION –
IC101 CXA2523AR
6-26.IC BLOCK DIAGRAMS
• BD MD Board 1/2
IC121 CXD2654R
IC152 BH6511FS-E2
• BD MD Board 2/2
C103 CXA2568M-T6
• BD CD Board
IC101 CXD2587Q
• MD DIGITAL Board
• MAIN Board 1/3
• MAIN Board 3/3
IC171 LB1641
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
17 16
SECTION EXPLODED VIEWS
7-1.CASE AND FRONT PANEL SECTION 11 20
61 54
7-2.CHASSIS SECTION 52
59 #3
120 122 123
7-3.MD MECHANISM DECK MDM-5A 113 110 107
124 113 111112 117 118 114
103 102 101
162 161
7-4.MD BASE UNIT MBU-5A 152 164
163 170166
157 152 152
214 215 217 214
7-5.CD MECHANISM DECK CDM55A-5SBD32
201 204 203
Ver
253
7-6.CDBASE UNIT BU-5SBD32
255 256
258 251
314 314
7-7.CD MECHANISM DECK CDM55C-5BD32
315 317
Ver 1.1
355 356
7-8.CDBASE UNIT BU-5BD32
BU identification: metal turntable without magnet
353 354
SECTION ELECTRICAL PARTS LIST
BD CD
BD MD
BD CD
MD DIGITAL
BD MD
MD DIGITAL LOADING MAIN
MAIN
MAIN
Ref. No
MAIN
Part No
PANEL
POWER
PANEL
POWER
Ref. No
HCD-MD373
Ver
MEMO
HCD-MD373
1999.08
HCD-MD373 REVISION HISTORY
BU-5BD32
Date