Philips DVP3350V - Page 20

3-4
No 33V
Is the Vcc(33V) sup-
plied to Q161 Emittor?
Check or Replace
the D121
Is the Q162 Base
‘H’?
Check the PWR CTL
“H” signal from μ-com
Check or Replace
the Q161
YES
YES
YES
(5) No 33V
No 5.0V_D
Check or Replace
the D125
Is the Vcc(5.3V) sup-
plied to Q165 Emittor?
Check or Replace
the Q165
Is the Q162 Base
‘H’?
NO
NO
Check the PWR CTL
“H” signal from μ-com
YES
YES
YES
(2) No 5.0V_D
No 5.0V_T
Check or Replace
the D125
Check the PWR CTL
“H” signal from μ-com
Is the Vcc(5.3V) sup-
plied to Q163 Emittor?
Is the Q162 Base
‘H’?
Check or Replace
the Q163
NO
NO
YES
YES
YES
(3) No 5.0V_T
No 3.8V
Check or Replace
the D123
Is the D123
normal?
Power line of Main
PCB is short
NO NO
NO
YES
YES
(4) No 3.8V