Philips DVDR630VR Service Manual page 65

VDR ELECTRICAL TROUBLESHOOTING GUIDE
No 2.5V
NO
Is there about 3.8V
at the IC152 pin1?
YES
NO
Is there about 3.3V~
5V at the IC152 pin4?
YES
Check the IC152
and Replace
No 1.8V
NO
Is there about 2.3V
at the IC160 pin1?
YES
NO
Is there about 3.3V ~
5V at the IC60 pin4?
YES
NO
Are the R167,R168
normal?
YES
Check the IC160
and Replace
Check or Replace
the D122
Check the 'DVD PWR CTL
"H"' signal from µ-com
Check or Replace
the D123
Check the 'DVD PWR CTL
"H"' signal from µ-com
Check or Replace
the R167,R168
3-72
No 5.0V
NO NO
Is there about 5.5V
at the IC151 pin1?
YES YES
NO
Is there about 3.3V~ 5V
at the IC151 pin4?
YES
Check the IC151
and Replace
No 12V
NO
Is there about 13.5V
at the IC157 pin1?
YES
NO
Is there about 3.3V~
5V at the IC157 pin2?
YES
Check the IC157 and
Replace
Check or Replace Check or Replace
the D124 the D124
Check the 'DVD PWR CTL
"H"' signal from µ-com
Check or Replace the
D125
Check the 'DVD PWR CTL
"H"' signal from µ-com