Read Panasonic PT-VW340Z / PT-VX410Z / PT-VX46EA / PT-VX406EA / PT-VW340ZD / PT-VX410ZD Service Manual online
INF-26
SECTION 1 SERVICE INFORMATION
■ No picture or abnormal picture is output
Confirm each cable connection
Connect the cables securely
Confirm the below with a signal other than all black pattern.
No picture with VIDEO input
Follow the section "VIDEO input check"
No picture with RGB1 input
Follow the section "RGB1 input check"
No picture with RGB2 input
Follow the section "RGB2 input check"
No picture with S-VIDEO input
Follow the section "S-VIDEO input check"
No picture with HDMI input
Follow the section "HDMI input check"
No picture with COMPONENT input
Follow the section "COPONENT input check"
No picture with all of inputs
A
Check each power supply voltage of microprocessor IC(IC301),
Keystone IC (IC2301), TTL2LVDS IC(IC2302), Digital Gamma IC
(IC501), S&H IC (IC561).
NG
A Check IC301, IC2301, IC2302, IC501, IC561 and periph-
eral circuits
A Check the waveform (LDVS output clock) at R401 on IC2302
(TTL2LVDS) circuit
NG
A Check IC2302(TTL2LVDS) and peripheral circuit
A Check the waveform (TTL output signal) at VSIR[1-12], VSIG[1-
12], VSSIB[1-12] on IC561 (S&H) circuit
NG
A Check IIC561 (S&H) and peripheral circuit
A Check the waveform (TTL output clock) at R322 on IC301 (Mi-
croprocessor) circuit
NG
A Check IC301(Microprocessor) and peripheral circuit
A
Check the waveform (LDVS output clock) at TXCK1_P,
TXCK1_N, TXCK2_P, TXCK2_N on IC501 (Digital Gamma)
circuit
NG
A Check IC501(Digital Gamma) and peripheral circuit
A Check the connection of connectors [K5R], [K5G], [K5B]
NG
A Connect the connectors securely
A Replace [A] P.C.Board
(3)
OK
OK
OK
OK
OK
OK
OK
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