Technical information

3. White Screen
White screen
NG
Measure Q204 base
is low level?
Replace X601
NG
Check Q204 is broken or
CN503 solder?
NG
Check Correspondent
component.
Check Correspondent
component.
Check reset circuit of U601
is normal
NG
OK
Replace PANEL
X601 oscillate
waveform is normal
OK
OK
OK
Replace U601
4. Keypad Board
35