4 Troubleshooting
4-6
GG15AS/GG15AS(R)/GG15L*/GG15L*(R)/
GG15V*/GG15V*(R)/GG15E*/GG15E*(R)
CONFIDENTIAL
4-4 No OSD [GG15AS/GG15L*/GG15V*/GG15E*]
No
While pushing a front
control button does any pulse
appear at Pin 121, 124~131 and
135~137 of IC200?
Replace IC102 or
check its related circuit.
Yes
Replace IC200.
There is video but no OSD.
4-4-1 No OSD [GG15AS(R)/GG15L*(R)/GG15V*(R)/GG15E*(R)]
No
While pushing a front
control button does any pulse
appear at Pin 121, 124~131 and
MST : 79~88 of MST:IC103?
Replace IC102 or
check its related circuit.
Yes
Replace IC103.
There is video but no OSD.