HCD-EC68/EC78
2
1.
SERVICING NOTES
............................................. 3
2. GENERAL
.................................................................. 6
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 8
3-2. Side
Panel
(L)/(R)
........................................................... 9
3-3. Top Panel (EC68: UK model)/Top Panel Block
(Except EC68: UK model) .............................................. 9
3-4. Tape Mechanism Deck (Except EC68: UK model) ........ 10
3-5. MAIN
Board
................................................................... 10
3-6. Front Panel Section ......................................................... 11
3-7. Back Panel Block ............................................................ 11
3-8. CD
Mechanism
Block
..................................................... 12
3-9. BU
Block
........................................................................ 12
3-10. OP Base Assy (KSM-213D) ........................................... 13
4.
TEST MODE
............................................................ 14
5. MECHANICAL
ADJUSTMENTS
...................... 18
6. ELECTRICAL
ADJUSTMENTS
........................ 18
7. DIAGRAMS
7-1. Printed Wiring Board - CD Board - ................................ 24
7-2. Schematic Diagram - CD Board - ................................... 25
7-3. Printed
Wiring
Board
- DECK Board (Except EC68: UK model) - .................. 26
7-4. Schematic
Diagram
- DECK Board (Except EC68: UK model) - .................. 26
7-5. Printed Wiring Board - MAIN Board - ........................... 27
7-6. Schematic Diagram - MAIN Board (1/2) - ..................... 28
7-7. Schematic Diagram - MAIN Board (2/2) - ..................... 29
7-8. Printed Wiring Board - HI AMP Board (EC78) - ........... 30
7-9. Schematic Diagram - HI AMP Board (EC78) - .............. 30
7-10. Printed Wiring Board - LOW AMP Board - ................... 31
7-11. Schematic Diagram - LOW AMP Board - ...................... 31
7-12. Printed Wiring Board - PANEL Board (Suf
fi
x-12) - ...... 32
7-13. Printed Wiring Board - PANEL Board (Suf
fi
x-13) - ...... 32
7-14. Schematic Diagram - PANEL Board - ............................ 33
7-15. Printed Wiring Boards - KEY Section - .......................... 34
7-16. Schematic Diagram - KEY Section - .............................. 34
7-17. Printed Wiring Board - PT Board - ................................. 35
7-18. Schematic Diagram - PT Board - .................................... 36
8.
EXPLODED VIEWS
8-1. Panel
Section
................................................................... 44
8-2. Tape Deck Section (Except EC68: UK).......................... 45
8-3. Front Panel Section ......................................................... 46
8-4. Chassis
Section
............................................................... 47
8-5. Main
Section
................................................................... 48
8-6. CD Mechanism Section (CDM88A-K6BD90-WOD) .... 49
9.
ELECTRICAL PARTS LIST
.............................. 50
TABLE OF CONTENTS
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
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270 °C during
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
This appliance is
classified as a CLASS 1
LASER product. This
marking is located on the
rear exterior.
Use of controls or adjustments or performance of procedures other than
those speci
ed herein may result in hazardous radiation exposure.
General
Power requirements:
European and Russian models: AC 230 V, 50/60 Hz
Mexican model: AC 127 V, 60 Hz
Argentine model: AC 220 V, 50/60 Hz
Australian model: AC 230 – 240 V, 50/60 Hz
Other models: AC 120, 220 or 230 – 240 V, 50/60 Hz,
adjustable with voltage selector
Power consumption:
HCD-EC78
European and Russian models: 160 W
0.5 W (in Power Saving Mode)
Mexican model: 160 W
Other models: 150 W
HCD-EC68
European and Russian models (except for the UK model): 100 W
0.5 W (in Power Saving Mode)
Other models: 100 W
Dimensions (w/h/d) (excl. speakers):
Approx. 200 × 306 × 415 mm
Mass (excl. speakers):
HCD-EC78
European and Russian models: Approx. 6.0 kg
Other models: Approx. 6.3 kg
HCD-EC68
European and Russian models (except for the UK model):
Other models: Approx. 5.3 kg
Approx. 5.3 kg
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513 QQ 376315150 892498299
