3
TABLE OF CONTENTS
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
• Abbreviation
CND
: Canadian model.
G
: German model.
EA
: Saudi Arabia model.
AUS
: Australian model.
SP
: Singapore model.
MY
: Malaysia model.
AR
: Argentine model.
TH
: Thai model.
AED
: North European model.
MX
: Mexican model.
KR
: Korean model.
PARTS No.
4-227-182-0
s
4-227-182-1
s
4-227-182-2
s
4-227-182-3
s
4-227-182-4
s
4-227-182-5
s
4-227-182-6
s
4-227-182-7
s
4-227-182-8
s
MODEL
CND
AEP,UK,G,AED,CIS
MY,SP
E
EA
MX
AUS
AR
KR, TH
1. GENERAL
·········································································· 5
2. DISASSEMBLY
································································ 8
3. SERVICE MODE
···························································· 16
4. MECHANICAL ADJUSTMENTS
····························· 19
5. ELECTRICAL ADJUSTMENTS
······························· 19
6. DIAGRAMS
6-1. Circuit Boards Location ·············································· 24
6-2. Block Diagrams ··························································· 25
6-3. Printed Wiring Board BD Board ···························· 28
6-4. Schematic Diagram BD Board ······························· 29
6-5. Printed Wiring Boards Sensor/Motor Section ········ 30
6-6. Schematic Diagram Sensor/Motor Section ············ 31
6-7. Printed Wiring Board Audio Board ························ 32
6-8. Schematic Diagram Audio Board ·························· 33
6-9. Printed Wiring Board Leaf SW Board ··················· 34
6-10. Schematic Diagram Leaf SW Board ······················ 34
6-11. Printed Wiring Board Main Board ························· 35
6-12. Schematic Diagram Main Board (1/2) ··················· 36
6-13. Schematic Diagram Main Board (2/2) ··················· 37
6-14. Printed Wiring Board Panel Board ························· 38
6-15. Schematic Diagram Panel Board ···························· 39
6-16. Printed Wiring Board Sub Panel Board ·················· 40
6-17. Schematic Diagram Sub Panel Board ···················· 41
6-18. Waveforms ··································································· 42
6-19. Printed Wiring Board Mic Board ··························· 42
6-20. Schematic Diagram Mic Board ······························ 43
6-21. Printed Wiring Board Front AMP Board ················ 44
6-22. Schematic Diagram Front AMP Board ·················· 45
6-23. Printed Wiring Board Surround AMP Board ········· 46
6-24. Schematic Diagram Surround AMP Board ············ 47
6-25. Printed Wiring Boards Trans/Sub Trans Boards ····· 48
6-26. Schematic Diagram Trans/Sub Trans Boards ········ 49
6-27. IC Block Diagrams ······················································ 50
6-28. IC Pin Function Description ········································ 51
8. EXPLODED VIEWS
................................................... 54
9. ELECTRICAL PARTS LIST
................................... 61
1.
Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
2.
Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3.
Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4.
Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety
checks before releasing the set to the customer.
5.
Check the B+ voltage to see it is at the values specified.
6.
Flexible Circuit Board Repairing
• Keep the temperature of the 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.
