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TROUBLESHOOTING GUIDE
THE PICTURE DOES NOT
APPEAR
Does backlight shine?
Is CD7201 connected?
Connect CD7201
Is CP7001, CP7002,
CP7003 and CP7004
Connect CP7001, CP7002
CP7003 and CP7004.
Yes
No
No
No
Yes
Is the voltage at pins
11, 14 of IC7001 24V?
Yes
No
Check D515, T501 and
peripheral circuit.
Is there signal at pins
5, 6, 8, 9, 11, 12, 14, 15,
17 and 18 of CP7202?
Change V7201(PANEL).
Change MAIN PCB.
No
Yes
Yes
Yes
No
Check Q3810 and peripheral
circuit.
Is there voltage at pins
26, 27, 28, 29 and 30 of
CP7202 5V?
E-4
22DV616DG