JVC MX-GA8 - Tape Recording Procedures; Recording Audio onto Cassettes

1-24 (No.MB080)
SECTION 5
TROUBLESHOOTING
5.1 Amplifier
Power Malfunction : COMMON
Front board micon -com
VDD(5V) normal?
UIC1 pin no.17,46,90
FRONT board PWR-SENS
voltage normal?
(pin no.9;5V)
Main board PIC02(L4959)
pin No.2 ,10 Input
voltage normal?
Front board
Does UX102 (10MHz)
oscillate?
Front board
When the power is
ON 'H' displays at pin
no.80 (UIC01)
Check the Main board
PIC02 (L4959)
-Check the Main board
PIC02 (L4959)
-Check the Front board
UD103 (IN4002)
-Check the Main board;
PBD01 (PBL403) RFS9
-Check the Power board;
Fuse P/T,RFS2,RFS5,RFS6
-Check the Main board;
PR212, PZ101, PR213
PR214, PR215, PD201
No
No
NoNo
No
Yes
Yes
Yes
Yes
Yes
Replace micon -com