Toshiba 19DV550P Service Manual page 50

THE PICTURE DOES NOT
APPEAR
Does backlight shine?
Yes
Is CD7204 connected?
Yes
Is there voltage at pins 1,2
and 16 of CP7200 5V?
Yes
Is there signal at pins
5,6,7,8,10,11,12,13,14,
15,19,20,21,23,24,25,
26,28,29,30 of CP7200
No
Change MAIN PCB.
All manuals and user guides at all-guides.com
TROUBLESHOOTING GUIDE
No
Is CD7005,CD7006
connected ?
Yes
Is the signal pin 16
and18 of IC7001 ?
Yes
Is the voltage at pin
20 of IC7001 12V ?
Yes
No
Connected CD7204.
No
Check Q3810 and peripheral
circuit.
Yes
E-3
No
Connected CD7005,CD7006
No
Check IC7001 and
peripheral circuit.
No
Check F7001.
Change V7201(PANEL).
19DV550P/19DV551P