18.5” LCD Color Monitor HCL HCMELWBT11
31
No picture (LED orange)
No picture
The button if under
control
X401 oscillate
waveform is normal
Replace U401
Replace X401
Check C423(+) =1.8V;
U404 Vout=3.3V
Check Correspondent
component
Replace U401
Check X401 oscillate
waveform is normal
Check CN404 or replace Q409,
Q410 and U404
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal
Check HS/VS from
CN101 is normal
Replace X401
Check Correspondent
component
NG
NG
OK
Summary of Contents for HCMELWBT11
Page 26: ...18 5 LCD Color Monitor HCL HCMELWBT11 26 7 PCB Layout 7 1 Main Board 715G2904 2 2 ...
Page 27: ...18 5 LCD Color Monitor HCL HCMELWBT11 27 ...
Page 28: ...18 5 LCD Color Monitor HCL HCMELWBT11 28 7 2 Power Board 715G2852 2 ...
Page 29: ...18 5 LCD Color Monitor HCL HCMELWBT11 29 7 3 Key Board 715G2835 1 ...
Page 38: ...18 5 LCD Color Monitor HCL HCMELWBT11 38 10 Monitor Exploded View ...
