Table of Contents
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no sound
Q700/750 "C" signal check
NO
YES
JK700 SPEAKER output check
YES
OK
IC602 input check
NO
YES
IC601 input check
IC602 replacement
IC601 replacement
Q795 "E" HIGH check
NO
YES
RY700 +12V(A) power check
NO
YES
+12V(A) power Troubleshooting refer
RY700 replacement
NO
YES
IC605 input check
YES
IC605 replacement
Q1720 "B" (+), (-) DC voltage check
YES
NO
IC700 replacement
- 2-5 -
NO
each function TROU-
BLESHOOTING refer
Q1725 TURN-ON check
YES
NO
OK
Speaker short check
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