Read Sony HCD-EC69 / HCD-EC79 / HCD-EC99 / MHC-EC69 / MHC-EC79 / MHC-EC99 Service Manual online
HCD-EC69/EC79/EC99
2
1.
SERVICING NOTES
.............................................
3
2. GENERAL
..................................................................
6
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 8
3-2. Side Panel (L)/(R) ........................................................... 9
3-3. Panel
3-3. Panel
(Top)
...................................................................... 9
3-4. MAIN
Board
................................................................... 10
3-5. Front Panel Block ........................................................... 10
3-6. Back Panel Block ............................................................ 11
3-7. CD Mechanism Block ..................................................... 11
3-8. Base
3-6. Back Panel Block ............................................................ 11
3-7. CD Mechanism Block ..................................................... 11
3-8. Base
Unit
......................................................................... 12
3-9. OP Base Assy (KSM-213D) ........................................... 12
3-10. Belt (DLM3A) ................................................................ 13
3-10. Belt (DLM3A) ................................................................ 13
4.
TEST MODE
............................................................ 14
5. ELECTRICAL
ADJUSTMENTS
........................ 18
6. DIAGRAMS
6-1. Block Diagram - CD, TUNER Section - ........................ 20
6-2. Block Diagram - MAIN Section - ................................... 21
6-3. Block
6-2. Block Diagram - MAIN Section - ................................... 21
6-3. Block
Diagram
- PANEL, POWER SUPLLY Section - ........................... 22
6-4. Printed Wiring Board - CD Board - ................................ 24
6-5. Schematic Diagram - CD Board - ................................... 25
6-6. Printed Wiring Board - USB Board - .............................. 26
6-7. Schematic Diagram - USB Board - ................................. 27
6-8. Schematic Diagram - MAIN Board (1/2) - ..................... 28
6-9. Schematic Diagram - MAIN Board (2/2) - ..................... 29
6-10. Printed Wiring Board - MAIN Board - ........................... 30
6-11. Printed Wiring Boards - AMP Section -.......................... 31
6-12. Schematic Diagram - 2CH-4CH AMP Board - ............... 32
6-13. Schematic Diagram - 3CH AMP Board (EC99) - ........... 33
6-14. Printed Wiring Board - PANEL Board - ......................... 34
6-15. Schematic Diagram - PANEL Board - ............................ 35
6-16. Printed Wiring Boards - AUDIO IN/OUT, KEY,
6-5. Schematic Diagram - CD Board - ................................... 25
6-6. Printed Wiring Board - USB Board - .............................. 26
6-7. Schematic Diagram - USB Board - ................................. 27
6-8. Schematic Diagram - MAIN Board (1/2) - ..................... 28
6-9. Schematic Diagram - MAIN Board (2/2) - ..................... 29
6-10. Printed Wiring Board - MAIN Board - ........................... 30
6-11. Printed Wiring Boards - AMP Section -.......................... 31
6-12. Schematic Diagram - 2CH-4CH AMP Board - ............... 32
6-13. Schematic Diagram - 3CH AMP Board (EC99) - ........... 33
6-14. Printed Wiring Board - PANEL Board - ......................... 34
6-15. Schematic Diagram - PANEL Board - ............................ 35
6-16. Printed Wiring Boards - AUDIO IN/OUT, KEY,
POWER SUPPLY Section - ............................................ 36
6-17. Schematic Diagram - AUDIO IN/OUT, KEY, POWER
SUPPLY Section - ........................................................... 37
7.
EXPLODED VIEWS
7-1. Panel
Section
................................................................... 45
7-2. Front Panel Section ......................................................... 46
7-3. Chassis
7-3. Chassis
Section
............................................................... 47
7-4. Main
Section
................................................................... 48
7-5. CD Mechanism Section (CDM88A-K6BD90-WOD) .... 49
8.
ELECTRICAL PARTS LIST
.............................. 50
Accessories are given in the last of the electrical parts list.
TABLE OF CONTENTS
NOTES ON CHIP COMPONENT REPLACEMENT
•
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
aged by heat.
FLEXIBLE CIRCUIT BOARD REPAIRING
•
•
Keep the temperature of soldering iron around 270 °C during
repairing.
repairing.
•
Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
circuit board (within 3 times).
•
Be careful not to apply force on the conductor when soldering
or unsoldering.
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
This appliance is classifi ed as
a CLASS 1 LASER product.
This marking is located on the
rear or bottom exterior.
a CLASS 1 LASER product.
This marking is located on the
rear or bottom exterior.
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK
0 OR DOTTED LINE
WITH MARK
0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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