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HCD-MD373 service manual Printed Wiring Board – Amp 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 59
Image 59
HCD-MD373
6-17.
PRINTED WIRING BOARD – AMP SECTION –
• See page 40 for Circuit Boards Location.
(Page 51)
(Page 63)
59 59
Page 58
Page 60
Page 59
Image 59
Page 58
Page 60
Contents
SERVICE MANUAL
SPECIFICATIONS
Sony Corporation
9-928-998-12
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
Ver 1.1
TABLE OF CONTENTS
3. DISASSEMBLY
6. DIAGRAMS
REMOVING THE INDICATION PLATE FL
DRAWING OUT THE TRAY DURING POWER OFF
CLEANING THE OPTICAL PICKUP CD PLAYER
SECTION SERVICING NOTE
Power board
SERVICE POSITION THE MD MECHANISM
SERVICE POSITION THE CD MECHANISM
SERVICE POSITION THE POWER BOARD
Hot Reset
Cold Reset
Procedure 1: recommended
Procedure
Aging Mode
When errors occur
When no errors occur
Error History Display Mode
•Reading the BD Error History Display
• Reading the Mechanism Error History Display
JIG FOR CHECKING BD MD BOARD WAVEFORM
Display Precedure
Record Precedure
Procedure
CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS
FORCED RESET
MAIN BOARD Component Side
Example
RETRY CAUSE DISPLAY MODE
Precedure
Reading the Display
Hexadecimal nBinary Conversion Table
Reading the Display
Front Panel
SECTION GENERAL
LOCATION OF PARTS AND CONTROLS
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
3-8.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 2: Press the
4-1.PRECAUTIONS FOR USE OF TEST MODE
4-2.SETTING THE TEST MODE
Procedure 1: Press the
4-5.SELECTING THE TEST MODE
4-5-3. Non-VolatileMemory Mode EEP MODE
4-5-1.Operating the Continuous Playback Mode
1. Mode display
2. Error rate display
4-6.FUNCTIONS OF OTHER BUTTONS
4-7.TEST MODE DISPLAYS
When Off
MEANINGS OF OTHER DISPLAYS
Contents
When Lit
MD SECTION 5-1.PARTS REPLACEMENT AND ADJUSTMENT
SECTION ELECTRICAL ADJUSTMENTS
Optical pick-upflexible board
5-4.PRECAUTIONS FOR ADJUSTMENTS
5-5.CREATING CONTINUOUSLY RECORDED DISC
Connection Checking Procedure
5-6-1.Temperature Compensation Offset Check
Checking Procedure
5-6-2.Laser Power Check
5-6-6. Self-Recording/playbackCheck
5-6-5.C PLAY Checking MO Error Rate Check
CD Error Rate Check
5-6-4.Focus Bias Check
Setting Procedure
5-7.INITIAL SETTING OF ADJUSTMENT VALUE
5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT
5-10.LASER POWER ADJUSTMENT
Connection
5-11.TRAVERSE ADJUSTMENT
Adjusting Procedure
Specified Value
Adjusting Procedure
5-12.FOCUS BIAS ADJUSTMENT
5-13-2.MO Error Rate Check
5-13.ERROR RATE CHECK
5-15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT
5-13-1.CD Error Rate Check
BD MD BOARD SIDE B
5-15.ADJUSTING POINTS AND CONNECTING POINTS
CD SECTION
BD MD BOARD SIDE A
TUNER UNIT is supplied as the assembled block
HCD-MD373 SECTION DIAGRAMS
4040
6-1.CIRCUIT BOARDS LOCATION
Page
6-2.BLOCK DIAGRAMS – BD CD SECTION –
•SIGNAL PATH CD
HCD-MD373
Siganl path
4242
– BD MD SECTION 1/2 –
R-chis omitted
Page
– BD MD SECTION 2/2 –
Page
HCD-MD373
Page
4444
– MAIN SECTION –
HCD-MD373
– BD MD 1/2 SECTION –
For schematic diagrams
For printed wiring boards
WAVEFORMS – BD CD SECTION –
Page
6-3.PRINTED WIRING BOARD – BD CD SECTION –
• See page 40 for Circuit Boards Location
HCD-MD373
•See page 69 for IC Pin Functions
6-4.SCHEMATIC DIAGRAM – BD CD SECTION –
•See page 67 for IC Block Diagrams
See page 45 for Waveforms
Page
6-5.PRINTED WIRING BOARD - BD MD SECTION
•Semiconductor Location
HCD-MD373
HCD-MD373
6-6.SCHEMATIC DIAGRAM – BD MD SECTION 1/2 –
•See page 65 for IC Block Diagrams
•See page 71 for IC Pin Functions
HCD-MD373
6-7.SCHEMATIC DIAGRAM - BD MD SECTION 2/2
•See page 48 for Printed Wiring Board
•See page 66 for IC Block Diagrams
Page
6-8.SCHEMATIC DIAGRAM - SP SECTION
6-9.PRINTED WIRING BOARD – SP SECTION –
Page
Page
6-10.PRINTED WIRING BOARD – MAIN SECTION –
•See page 40 for Circuit Boards Location
HCD-MD373
Page
6-11.SCHEMATIC DIAGRAM – MAIN SECTION 1/3 –
• See page 68 for IC Block Diagrams
HCD-MD373
HCD-MD373
6-12.SCHEMATIC DIAGRAM – MAIN SECTION 2/3 –
•See page 52 for Printed Wiring Board
•See page 68 for IC Block Diagrams
See page 52 for Printed Wiring Board
6-13.SCHEMATIC DIAGRAM - MAIN SECTION 3/3
Page Page
See page 75 for IC Pin Functions
Page
6-14.SCHEMATIC DIAGRAM – MD DIGITAL SECTION –
•See page 67 for IC Block Diagrams
HCD-MD373
• See page 40 for Circuit Boards Location
6-15.PRINTED WIRING BOARD – MD DIGITAL SECTION –
Page Page Page Page
HCD-MD373
Page
6-16.SCHEMATIC DIAGRAM – AMP SECTION –
HCD-MD373
Page
See page 40 for Circuit Boards Location
6-17.PRINTED WIRING BOARD – AMP SECTION –
HCD-MD373
Page Page
Page
6-18.SCHEMATIC DIAGRAM - PANEL SECTION
HCD-MD373
Page
6-19.PRINTED WIRING BOARD – PANEL SECTION –
• Semiconductor Location
HCD-MD373
Page Page
6-20.SCHEMATIC DIAGRAM – POWER SECTION –
HCD-MD373
Page
6-21.PRINTED WIRING BOARD – POWER SECTION –
HCD-MD373
Page
6-25.PRINTED WIRING BOARD – LOADING SECTION –
6-22.SCHEMATIC DIAGRAM – BD SWITCH SECTION –
6-23.PRINTED WIRING BOARD – BD SWITCH SECTION –
6-24.SCHEMATIC DIAGRAM – LOADING SECTION –
IC101 CXA2523AR
6-26.IC BLOCK DIAGRAMS
• BD MD Board 1/2
IC121 CXD2654R
IC152 BH6511FS-E2
• BD MD Board 2/2
• MD DIGITAL Board
• BD CD Board
IC101 CXD2587Q
C103 CXA2568M-T6
IC302 MC14052B
• MAIN Board 3/3
IC171 LB1641
• MAIN Board 1/3
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
103 102 101
7-3.MD MECHANISM DECK MDM-5A 113 110 107
124 113 111112 117 118 114
120 122 123
157 152 152
7-4.MD BASE UNIT MBU-5A 152 164
163 170166
162 161
Ver
7-5.CD MECHANISM DECK CDM55A-5SBD32
201 204 203
214 215 217 214
258 251
7-6.CDBASE UNIT BU-5SBD32
255 256
253
Ver 1.1
7-7.CD MECHANISM DECK CDM55C-5BD32
315 317
314 314
353 354
7-8.CDBASE UNIT BU-5BD32
BU identification: metal turntable without magnet
355 356
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
Ref. No
HCD-MD373
Ver
HCD-MD373
MEMO
Date
HCD-MD373 REVISION HISTORY
BU-5BD32
1999.08