5 Troubleshooting
5-1-2 No Power
When Pin 6 of CN105 is
❇❇
around 2V, does proper DC 8V,
3V appear at Pin 1 and 7 of
CN105 seperately?
Yes
Does proper DC 5 V appear at
Pin 3 of IC115?
Yes
Push Power button.
Does proper 0V at Pin 6 of
CN105?
Yes
Does proper DC 3.3 V appear at
Pin 3 of IC112?
Yes
Does proper DC 2.5 V appear at
Pin 2 of IC116, IC117?
No
No
No
No
No
Change power Adaptor.
Check IC115 and related circuit.
Check function PCB Assy
and related circuit.
Check IC112 and related circuit.
Check IC116, IC117 and related circuit.
❇❇2V means soft power off or DPMS state.
GH17LS/GH17ES |
