Read Sony HCD-EC68USB / MHC-EC68USB Service Manual online
HCD-EC68USB
2
1.
SERVICING NOTES
............................................. 3
2. GENERAL
.................................................................. 7
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 8
3-2. Side
Panel
(L)/(R)
........................................................... 9
3-3. Panel
(Top)
...................................................................... 9
3-4. MAIN
Board
................................................................... 10
3-5. Front Panel Block ........................................................... 10
3-6. Back Panel Block ............................................................ 11
3-7. 3 CD Mechanism Block .................................................. 11
3-8. Base
3-6. Back Panel Block ............................................................ 11
3-7. 3 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 SERVO, TUNER Section - ........... 20
6-2. Block Diagram - USB Section - ..................................... 21
6-3. Block Diagram - MAIN Section - ................................... 22
6-4. Printed Wiring Board - CD Board - ................................ 24
6-5. Schematic Diagram - CD Board - ................................... 25
6-6. Printed Wiring Boards - USB Section - .......................... 26
6-7. Schematic Diagram - USB Section - .............................. 27
6-8. Printed
6-2. Block Diagram - USB Section - ..................................... 21
6-3. Block Diagram - MAIN Section - ................................... 22
6-4. Printed Wiring Board - CD Board - ................................ 24
6-5. Schematic Diagram - CD Board - ................................... 25
6-6. Printed Wiring Boards - USB Section - .......................... 26
6-7. Schematic Diagram - USB Section - .............................. 27
6-8. Printed
Wiring
Board
- MAIN Board (Suffi x-12/-13) - ..................................... 28
6-9. Printed Wiring Board - MAIN Board (Suffi x-14) - ........ 29
6-10. Schematic Diagram - MAIN Board (1/2) - ..................... 30
6-11. Schematic Diagram - MAIN Board (2/2) - ..................... 31
6-12. Printed Wiring Board - LOW AMP Board - ................... 32
6-13. Schematic Diagram - LOW AMP Board - ...................... 32
6-14. Printed Wiring Boards - KEY Section - .......................... 33
6-15. Schematic Diagram - KEY Section - .............................. 33
6-16. Printed Wiring Board - PANEL Board (Suffi x-12) - ...... 34
6-17. Printed Wiring Board - PANEL Board (Suffi x-13) - ...... 35
6-18. Printed Wiring Board - PANEL Board (Suffi x-14) - ...... 36
6-19. Schematic Diagram - PANEL Board - ............................ 37
6-20. Printed Wiring Board - PT Board - ................................. 38
6-21. Schematic Diagram - PT Board - .................................... 39
6-10. Schematic Diagram - MAIN Board (1/2) - ..................... 30
6-11. Schematic Diagram - MAIN Board (2/2) - ..................... 31
6-12. Printed Wiring Board - LOW AMP Board - ................... 32
6-13. Schematic Diagram - LOW AMP Board - ...................... 32
6-14. Printed Wiring Boards - KEY Section - .......................... 33
6-15. Schematic Diagram - KEY Section - .............................. 33
6-16. Printed Wiring Board - PANEL Board (Suffi x-12) - ...... 34
6-17. Printed Wiring Board - PANEL Board (Suffi x-13) - ...... 35
6-18. Printed Wiring Board - PANEL Board (Suffi x-14) - ...... 36
6-19. Schematic Diagram - PANEL Board - ............................ 37
6-20. Printed Wiring Board - PT Board - ................................. 38
6-21. Schematic Diagram - PT Board - .................................... 39
7.
EXPLODED VIEWS
7-1. Panel
Section
................................................................... 48
7-2. Front Panel Section ......................................................... 49
7-3. Chassis
7-3. Chassis
Section
............................................................... 50
7-4. Main
Section
................................................................... 51
7-5. 3 CD Mechanism Section
(CDM88A-K6BD91UR-WOD)
(CDM88A-K6BD91UR-WOD)
......................................
52
8.
ELECTRICAL PARTS LIST
.............................. 53
Note: Refer to “Suffi x-14” for DIAGRAMS of 120V AC area in E
model.
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.
This appliance is
classified as a CLASS 1
LASER product. This
marking is located on the
rear exterior.
classified as a CLASS 1
LASER product. This
marking is located on the
rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures other than
those specifi ed herein may result in hazardous radiation exposure.
Use of controls or adjustments or performance of procedures other than
those specifi ed herein may result in hazardous radiation exposure.
SAFETY-RELATED COMPONET 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
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
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.
Ver. 1.1
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