JVC MX-GB6

1-36 (No.MB160)
SECTION 5
TROUBLESHOOTING
5.1 Amplifier
(1) Power Malfunction
Front board micon
VDD(5V) normal?
UIC1 pin No.17,46,90
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)
Main board PIC02(L4959)
pin No. 2,10 input
voltage normal?
Front board
PWR-SENS
voltage normal?
(pin No. 9 ; 5V)
Replace micon
- Check the Main board
PIC02 (L4959)
- Check the Front board
UD103 (IN4002)
- Check the Main board:
GBU606(PBL403)RFS9
- Check the Power board
Fuse P/T,RFS2,RFS5,RFS6
- Check the Main board
PR212, PZ101, PR213
PR214, PR215, PD201
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes