Panasonic PT-EZ770Z Service Manual page 43

SECTION 1 SERVICE INFORMATION
■ VIDEO input check
One of the inputs (DVD-I, HDMI, RGB1, RGB2, DisplayPort,
DIGITAL LINK) can be displayed
J Check the waveform at pin 26 of [JK4007]
Check the cable between [A28] and [JK4007]
A Check IC1102 and peripheral circuits
■ RGB1 input check
One of the inputs (DVD-I, DisplayPort, VIDEO) can be displayed
One of the inputs (DVD-I, ,DIGITAL LINK) can be displayed
Input (RGB2) can be displayed
A Check the output waveform at L1323, L1324, L1325
Check the video input waveform at IC1100
A
C1118(G/Y), C1119(R/Pr), C1120(B/Pb)
Check the sync input waveform at IC1100
A
Q1025 (HD), Q1023(VD)
A Check IC1100 and peripheral circuits
OK
OK
OK
OK
OK
OK
OK
OK
OK
NG
(3)
NG
J Replace [J] P.C.Board
NG
Replace cable
NG
(3)
NG
A Check IC1100 and peripheral circuits
NG
A Check IC1005 and IC1006 and peripheral circuit
NG
A Check L1323, L1324, L1325 and peripheral circuit
NG
A Check C1118, C1119, C1120 and peripheral circuit
NG
A Check Q1025, Q1023 and peripheral circuits
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