Toshiba 19LV505 Service Manual page 67

THE PICTURE DOES NOT
APPEAR
Does backlight shine?
Yes
Is CD2804 connected?
Yes
Is there voltage at pins 1,2
and 16 of CP2804 5V?
Yes
Is there signal at pins 5,6,7,
8,9,11,12,13,14,15,20,21,
22,23,24,26,27,28,29 and 30
of CP2804?
No
Change DIGITAL PCB.
TROUBLESHOOTING GUIDE
No
Is CD7005,CD7006
connected ?
Is the signal pin 18
and 19 of IC7001 ?
Is the voltage at pin
20 of IC7001 12V ?
No
Connected CD2804.
No
Check Q3009 and peripheral
circuit.
Yes
No
Yes
No
Yes
No
Yes
E-3
Connected CD7005,CD7006.
Check IC7001 and
peripheral circuit.
Check F7001.
Change V2801(PANEL).
19LV505/19LV506/22LV505