Panasonic MW-20EB Service Manual page 9

3.2.2. LCD No display
No display on LCD
Module
+10V at Pin 1 & 2
of CN1002 ?
+10V at Pin 1 & 2
at CN920 ?
LCD Module connection
No display on LCD
Module
VCOM(-1.55V)
CN1301 Pin 1
VGL(-13V)
CN1301 Pin 2
Is there control signal
at pin 1 and 5 at CN1302 ?
No
IC1505 circuit
No
PANEL P.C.B / IR P.C.B / FFC
No
Q1502/Q1500/D1502 4/IC1503 abnormal
No
Q1500/D1502 4/IC1503 abnormal
No
IC1503 abnormal
No
IC1504 abnormal
No
Q1501 abnormal
No
LCD Module
No
LCD Module
No
IC1000 abnormal
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