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