Philips MC-D370/21M, Service Manual

Page: 14 / 76

2-2 2-2
Check IC406 Pin16=+7v
Yes
MC-D370 REPAIR INSTRUCTIONS (1 of 2)
No Working
Power Supply
No Output
DVD Audio Audio Output
No Sound No Sound
Ear Head Phone Audio Line Tuner Aux in Digital Line Subwoofer Line
No Sound No Output No Output No Output No Output
Yes RE-insert and fix
the cable
F904 Bad Cause Damage
Check Back power PCB Not
No
Change F904
Bad
Ok
No
Repair Between
T901 to CN907
Circuit
Yes
circuit
Work
Correct
No
Check Repair
Switch Power Supply
Circuit (See B)
Check IC114 Pin3=(3.3V)
and 5V give Circuit
+5V Voltage
Yes
No Output
All Function
No Working
Repair in IC106 IC400 Circuit
RE-insert and fix
the cable
Circuit affirm Correct
No
DVD Audio
No Sound
Power Supply
No Working
No Output
No
Bad Cause Damage
No
No Output
+12V -12V Voltage
No Output
+8 V Voltage
+20V -20V Voltage
No Output
Working or Not
and its conn circuti
No
F905 F906 F909
Yes
Check RL901
Check D905 D912 and
Check D901 D902 D903 D904
Check D913 D914 and
Check D911 and
its conjoint part
and its conjoint part
its conjoint part
its conjoint part
CN102 to DVD loader
Yes
DVD Serve PCB Part
Check IC106 circuit
No
its conjoint part
Check +5v
Check Repair in +12V -12V
net its conjoint part
No
Pin14 Voltage
Yes
Correct is +5V
No
Check CN907 and
its conjoint part
Correct is +12V -12V
Pin1,3,6 V20V -20V
No Sound
Audio Output
Yes
Yes
their Voltage
Cable loose or bad INT
Yes
No
Check Repair in
Check Repair Between
No
loose or bad INT
IC406 to JK401 Circuit
Yes
No Sound
Aux in
No
Check +7v and -7v
affirm Correct
Pin7=-7v
give Circuit
B C
D
E
F G H I
J
MAIN UNIT REPAIR CHART
A
No Working
All Function
5V if Right
Check power pcb CN907 16pin
Check Repair
Control PCB IC206
Check All Voltage 3.3V
Working or Not
Panel stand LED show
All cable is loose
Check All System
or bad INT
Check IC902 IC903 Pin3=(5V)
B
All Voltage
Check F904
A
Check IC106 IC400
Check CN706 and
D
Check RL901
Check F902 F903 F9041
Check IC400
C
Check IC501
Check IC403,IC404,IC405,
E
Check JK401