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HCD-EC68/EC78
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):
Approx. 5.3 kg
Other models: Approx. 5.3 kg
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
repairing.
•
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
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures other than
those specifi ed herein may result in hazardous radiation exposure.
This appliance is
classified as a CLASS 1
LASER product. This
marking is located on the
rear exterior.
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
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
WITH
SONY
PARTS
TABLE OF CONTENTS
1.
SERVICING NOTES
2.
GENERAL
..................................................................
3.
3-1. Disassembly Flow ...........................................................
3-2. Side Panel (L)/(R) ...........................................................
(Except EC68: UK model) ..............................................
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.
............................................................ 14
5.
6.
7.
7-1. Printed Wiring Board - CD Board - ................................ 24
7-2. Schematic Diagram - CD Board - ................................... 25
- DECK Board (Except EC68: UK model) - .................. 26
- 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
7-14. 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.
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
9.
.............................................
...................... 18
........................ 18
.............................. 50
3
6
8
9
9
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