Service manual

- 2-5 -
SPK Relay Troubleshooting
D704(+) 12V check
Q704 Collector “Low” check
Output check
normal operation
Refer power check
Q704 Base “High”
Q704 Replacement
RELAY Replacement
(RY701)
Refer IC501(BU2090) Troubleshooting
AUX
IC601 5, 24 PIN signal input check
JK600 signal input check
Specific FUNCTION MODE has no sound
TAPE
IC601 3,26 PIN signal input check
Refer IC202 Troubleshooting
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NONO