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Sony HCD-EC68 Service Manual

Sony HCD-EC68
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HCD-EC68/EC78
HCD-EC68/EC78
3232
1
100
30
31
81
80
50
51
B
E
B
E
BE
B
E
BE
B
E
B
E
BE
B
E
BE
BEBE
BE
BE
B
E
B
E
R400
R401
R402
R405
R406
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R425
R426
R428
R446
R447
Q301
Q303
Q304
Q305
Q306
Q307
Q308
Q310
Q311
Q312
Q313
Q314
Q315
Q316
Q317
Q318
FB301
R301
(EC68:UK)
R302
R303
R304
R305
R306
R307
R308
R309
R310
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
R331
R332
R333
R334
R335
R336
R337
R338
R339
C301
R340
C304
R341
R342
R343
R344
C308
R345
R346
R347
R348
R349
C310
C311
C312
C313
R350
C314
R351
C315
R352
C316
R353
C317
R354
R355
C319
R356
R357
R358
R359
C320
C321
R360
R361
R362
R363
R364
C328
R365
R366
R367
R368
R369
C330
C332
R370
R371
R372
R373
R374
C338
R375
R376
R377
R378
R379
C340
C341
C342
R380
C344
R381
C345
R382
C346
R383
R384
R385
R386
R387
R389
C354
R390
C355
R391
C356
R392
R396
D301
D302
D303
D304
D305
JR301
JR302
JR303
JR304
JR305
JR307
JR308
JR309
JR310
JR31
1
JR313
JR315
SCR1
B
E
E
B
1
37
11
2
27
26
1
212
13
32
1
112
12
JW370
JW371
JW372
JW373
JW374
JW375
JW376
JW377
JW378
JW379
JW380
JW381
JW382
JW383
JW384
JW385
JW386
JW387
JW388
JW389
JW390
JW391
JW392
JW393
JW394
JW395
JW396
JW397
JW398
JW399
JW400
JW401
JW402
JW403
JW404
JW405
JW406
Q302
Q309
LED301
SW303
SW303
SW304
SW305
TUNING +
W301
3 1
SW311
SW312
SW313
SW314
SW315
SW316
SW317
SW318
SW319
CN304
CN302
CN303
CN306
C302
C303C305
C306
C309
X301
X302
S301
C343
JW301
JW302
JW303
JW304
JW305
JW306
JW307
JW308
JW309
JW310
JW311
JW312
JW313
JW314
JW315
JW316
JW317
JW318
JW319
JW320
JW321
JW322
JW323
JW324
JW325
JW326
JW328
JW329
JW330
JW331
JW332
JW333
JW334
JW335
JW336
JW337
JW338
JW339
JW340
JW341
JW342
JW343
JW344
JW345
JW346
JW347
JW348
JW349
JW350
JW351
JW352
JW353
JW354
JW355
JW356
JW357
JW358
JW359
JW360
JW361
JW362
JW363
JW364
JW365
JW366
JW367
JW368
JW369
PANEL BOARD
IC301
IC302
+
DSGX
.-
PLAY MODE/
TUNING MODE
FUNCTION
VOLUME
ROTARY
ENCODER
DISPLAY
EQ
-TUNING
/
CD
SW311
EC68:RU,E2,E3,E51,MX,AR,AUS/
EC78:RU,E2,E3,E51,MX,AR
LCD301
LIQDID CRYSTAL DISPLAY
9
Y
.-
L1
MAIN
BOARD
CN607
B1
KEY
POWER
BOARD
W401
STANDBY
1-875-490-
12
(12)
A1
KEY CD
BOARD
CD MECHANISM
DECK
A
B
C
D
E
F
G
123456
(CHASSIS)
7-12. PRINTED WIRING BOARD - PANEL Board (Suf x-12) -
(Page 34)
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
(Page 27)
(Page 34)
7-13. PRINTED WIRING BOARD - PANEL Board (Suf x-13) -
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
1
100
30
31
81
80
50
51
B
E
B
E
BE
B
E
BE
B
E
B
E
BE
B
E
BE
BEBE
BE
BE
B
E
B
E
R400
R401
R402
R405
R406
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R425
R426
R428
R446
R447
Q301
Q303
Q304
Q305
Q306
Q307
Q308
Q310
Q311
Q312
Q313
Q314
Q315
Q316
Q317
Q318
FB301
R301
(EC68:UK)
R302
R303
R304
R305
R306
R307
R308
R309
R310
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
R331
R332
R333
R334
R335
R336
R337
R338
R339
C301
R340
C304
R341
R342
R343
R344
C308
R345
R346
R347
R348
R349
C310
C311
C312
C313
R350
C314
R351
C315
R352
C316
R353
C317
R354
R355
C319
R356
R357
R358
R359
C320
C321
R360
R361
R362
R363
R364
C328
R365
R366
R367
R368
R369
C330
C332
R370
R371
R372
R373
R374
C338
R375
R376
R377
R378
R379
C340
C341
C342
R380
C344
R381
C345
R382
C346
R383
R384
R385
R386
R387
R389
C354
R390
C355
R391
C356
R392
R396
D301
D302
D303
D304
D305
JR301
JR302
JR303
JR304
JR305
JR307
JR308
JR309
JR310
JR31
1
JR313
JR315
SCR1
B
E
E
B
1
37
11
2
27
26
1
2
12
13
32
1
112
12
JW370
JW371
JW372
JW373
JW374
JW375
JW376
JW377
JW378
JW379
JW380
JW381
JW382
JW383
JW384
JW385
JW386
JW387
JW388
JW389
JW390
JW391
JW392
JW393
JW394
JW395
JW396
JW398
JW397
JW399
JW400
JW401
JW402
JW403
JW404
JW405
JW406
Q302
Q309
LED301
SW303
SW303
SW304
SW305
TUNING +
W301
3 1
SW311
SW312
SW313
SW314
SW315
SW316
SW317
SW318
SW319
CN304
CN302
CN303
CN306
C302
C303C305
C306
C309
X301
X302
S301
C343
JW301
JW302
JW303
JW304
JW305
JW306
JW307
JW308
JW309
JW310
JW311
JW312
JW313
JW314
JW315
JW316
JW317
JW318
JW319
JW320
JW321
JW322
JW323
JW324
JW325
JW326
JW328
JW329
JW330
JW331
JW332
JW333
JW334
JW335
JW336
JW337
JW338
JW339
JW340
JW341
JW342
JW343
JW344
JW345
JW346
JW347
JW348
JW349
JW350
JW351
JW352
JW353
JW354
JW355
JW356
JW357
JW358
JW359
JW360
JW361
JW362
JW363
JW364
JW365
JW366
JW367
JW368
JW369
PANEL BOARD
IC301
IC302
+
DSGX
.-
PLAY MODE/
TUNING MODE
FUNCTION
VOLUME
ROTARY
ENCODER
DISPLAY
EQ
-TUNING
/
CD
SW311
EC68:RU,E2,E3,E51,MX,AR,AUS/
EC78:RU,E2,E3,E51,MX,AR
LCD301
LIQDID CRYSTAL DISPLAY
9
Y
.-
L2
MAIN
BOARD
CN607
B2
KEY
POWER
BOARD
W401
STANDBY
1-875-490-
13
(13)
A2
KEY CD
BOARD
CD MECHANISM
DECK
A
B
C
D
E
F
G
123456
(CHASSIS)
(Page 34)
(Page 27)
(Page 34)
Note: Refer to “SUFFIX-12/SUFFIX-13 DISCRIMINATION
OF PANEL BOARD” (page 3) of the servicing notes
for suf x-12 and suf x-13.
Ref. No. Location
• Semiconductor Location
Ref. No. Location
D301 D-4
D302 D-2
D303 D-3
D304 C-4
D305 E-5
IC301 B-3
IC302 A-5
LED301 A-1
Q301 B-1
Q302 D-4
Q303 D-4
Q304 D-3
Q305 D-2
Q306 D-2
Q307 E-5
Q308 E-5
Q309 E-5
Q310 E-5
Q311 F-5
Q312 F-5
Q313 F-4
Q314 F-4
Q315 F-5
Q316 F-4
Q317 F-4
Q318 F-4
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
Question and Answer IconNeed help?

Do you have a question about the Sony HCD-EC68 and is the answer not in the manual?

Sony HCD-EC68 Specifications

General IconGeneral
TypeMini Hi-Fi System
CD PlayerYes
CD ChangerNo
Tuner BandsFM/AM
USB PlaybackYes
Remote ControlYes
Speakers2
Weight (Main Unit)3.5 kg
BluetoothNo
Speaker Size10 cm
Weight (Speaker)2.5 kg

Summary

Service Manual Overview and Specifications

General System Specifications

Technical specifications for the HCD-EC68/EC78 audio system.

Amplifier Power Output

Details on power output ratings for various models and regions.

CD Player and Tuner Specifications

Specifications for the CD player and tuner sections.

Tape Deck Specifications

Details for the tape deck recording system.

Servicing, Disassembly, and Test Modes

Servicing Notes and Precautions

Important notes and precautions for servicing the unit.

Unit Disassembly Procedures

Detailed steps and flow for disassembling the unit.

Test Modes Overview

Various test modes for checking unit functions and performance.

Component Handling and Precautions

Optical Pickup and Laser Diode Handling

Precautions for handling the optical pickup block and laser diode safely.

Unleaded Solder Information

Information and characteristics of unleaded solder.

Disc Tray Lock Release

Procedure to release the disc tray lock mechanism.

Unit Maintenance Procedures

Opening the Disc Tray (Power Off)

Procedure to open the CD tray when the unit is off.

Removing the Volume Knob

Procedure for removing the volume knob.

Safety and Component Identification

Capacitor Discharge for Safety

Procedure to discharge capacitors on the main board for safety.

Tape Mechanism Deck Identification

Guide to differentiate between two types of tape mechanism decks.

Basic Unit Operations

Source Selection, Sound, and Playback

How to select sources, adjust sound, and play CDs/MP3s.

Initial Setup and Clock Setting

Initial setup instructions, including remote and clock settings.

Radio and Tape Playback

Guides for listening to radio and playing cassette tapes.

Display Information

How to change the information displayed on the system.

Advanced Operations and Timers

CD Programming and Tape Recording

How to create custom CD playback and record audio to tape.

Timer Functions

Explanation of the Sleep Timer and Play Timer functions.

Radio Station Presets

How to store and recall favorite radio stations.

Adjustments and Diagrams

Mechanical Adjustments

Procedures for adjusting mechanical parts like torque and tension.

Electrical Adjustments

Procedures for adjusting electrical components and heads.

Tuner Section Adjustments

Procedures for adjusting the tuner section's frequency and tracking.

Circuit Diagrams and Component Information

Diagram Interpretation Notes

Notes on interpreting printed wiring board and schematic diagrams.

Circuit Diagrams and Layouts

Circuit diagrams and printed wiring board layouts for all sections.

Integrated Circuit (IC) Details

IC Block Diagrams

Block diagrams illustrating the function of key ICs.

IC Pin Function Descriptions

CD Board IC Pin Descriptions

Detailed pin functions for ICs on the CD board.

Panel Board IC Pin Descriptions

Panel Board IC301 Pinout

Pin description for IC301 on the Panel Board.

Other IC Pin Descriptions

IC601 Pin Description

Pin description for IC601.

Component Identification and Assembly

Exploded Views of Unit Sections

Visual breakdown of unit parts for identification and replacement.

Panel Section Exploded View

Exploded view of the panel section and its components.

Tape Deck Section Exploded View

Exploded view of the tape deck section.

Front Panel Section Exploded View

Exploded view of the front panel section.

Chassis and Main Section Exploded Views

Exploded views of the chassis and main sections.

CD Mechanism Section Exploded View

Exploded view of the CD mechanism section.

Electrical Parts List

Component Lists

Lists of capacitors, resistors, semiconductors, connectors, and ICs.

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