LG BH100 Training Manual page 42

TROUBLESHOOTING
No 5.0 Loader
Is the Vcc
(5.3V) supplied to
IC156 Pin1?
Is the IC156 pin4 "H"?
Check or replace the IC156
No 3.3V
Is the Vcc
(3.8V) supplied to
IC153 Pin1?
Is the IC153 Pin4 "H"?
Check or replace the IC153
No 12V (Main)
Is the Vcc
(13.5V) supplied to
IC152 Pin1?
Is the IC152 Pin4 'H'?
Check or replace the IC152
BH100 Blu-ray Player
YES
YES
YES
YES
YES
YES
NO
Check or Replace the D128
Check the PWR CTL
NO
"H" signal from µ-com
NO
Check or replace the D127
Check the PWR CTL
NO
"H" signal from µ-com
NO
Check or replace the D124
Check the PWR CTL
NO
"H" signal from µ-com
42
Troubleshooting