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TROUBLESHOOTING GUIDE
THE PICTURE DOES NOT
APPEAR
Does backlight shine?
Is CD7201 connected?
Connect CD7201
Is CP7001 and
CP7002 connected?
Connected CP7001 and
CP7002.
Yes
No
No
No
Yes
Is the voltage at pins 13
and 15 of IC7001 8.3V?
Yes
No
Check IC7001 and
peripheral circuit.
Is there signal at pins 7,
9, 10, 12, 13, 22, 23, 25,
26 and 28 of CP7201?
Change V7201(PANEL).
Change MAIN PCB.
No
Yes
Yes
Yes
No
Check Q3810 and peripheral
circuit.
Is there voltage at pins 1,
2 and 3 of CP7201 5V?
E-3
19DV616DG