3-29
ELECTRICAL TROUBLESHOOTING GUIDE
2. SYSTEM PART
Power on.
FRONT board OK.
Check 25p FFC cable.
Check SMPS board.
Check FFC cable.
Check MAIN board.
Check SMPS board.
Replace DIG301.
Replace LED
(LD351 ~ LD366).
Check MAIN board.
“HELLO”
Display on FLD
OK?
Volume LED
LD351 ~ LD366
Turn on?
When turn
the volume, count is
change?
NO
NO
NO
NO
NO
NO
NO
NO
CN105
cable connection
OK?
CN302
Pin13, 19, 20, 22
OK?
CN352
Pin7, 8 signal
OK?
CN301
Pin14~17 data signal
OK?
CN301
Pin13, 19, 20, 22
power OK?
YES
YES
YES
YES
YES
YES
YES
YES
Summary of Contents for CM9530
Page 11: ...MEMO 1 10 ...
Page 13: ...MEMO 2 2 ...
Page 17: ...A60 A61A 651 652 653 653 4 SPEAKER SECTION 4 1 FRONT SPEAKER NS9530F ...
Page 18: ...A91A 951 952 953 953 A90L 4 2 SUBWOOFER SPEAKER NS9530W LEFT SUBWOOFER ...
Page 19: ...2 10 A91A 951 952 953 953 A90R SUBWOOFER SPEAKER NS9530W RIGHT SUBWOOFER ...
Page 78: ...3 79 3 80 PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD TOP VIEW ...
Page 80: ...3 83 3 84 2 MAIN P C BOARD TOP VIEW ...
Page 81: ...3 85 3 86 MAIN P C BOARD BOTTOM VIEW ...
Page 82: ...3 87 3 88 3 VOLUME P C BOARD TOP VIEW ...
Page 83: ...3 89 3 90 VOLUME P C BOARD BOTTOM VIEW ...
Page 84: ...3 91 3 92 4 VFD P C BOARD TOP VIEW BOTTOM VIEW ...
Page 85: ...3 93 3 94 5 MIC P C BOARD TOP VIEW BOTTOM VIEW 6 PORTABLE P C BOARD TOP VIEW BOTTOM VIEW ...