Panasonic PT-RZ470U / PT-RZ470E / PT-RZ470EA / PT-RW430U / PT-RW430E / PT-RW430EA (serv.man8) Service Manual ▷ View online
INF - 22
6. 4. Troubleshooting
K
P
P
P
B
B
* The letters in the left of inspection items indicate the P.C. Boards related to their respective descriptions.
* Please be sure to perform check, after assembling a lighting block completely.
■ Power does not turn ON. (The power indicator does not light in red.)
* If the top cover is not attached well, inter- lock will work.
A A2 connector is removed and checked short-circuits.
1-2, 7-8, 11-12
A Replace A-PCB.
B Confirm the short circuit of each parts.
Q9731(D-S),Q9732(D-S),Q9731(D-S),Q9732(D-S)
B Replace B-PCB.
Confirm each cable and connector connection.
K1～P1、P3～A2
Connect the connectors or install top cover properly.
Follow the section "A-PCB operation checks".
■ The projector does not change from standby mode to an operating mode.
(The power indicator does not change from red to green.)
Confirm the fuse. ⇒ F8101、F8201
Replace P-PCB.
P
・
Confirm the short circuit of ZNR. ⇒Z8101, Z8102
・
Confirm the short circuit of each parts.
D8101,D8106,D8107,Q8102(D-S),Q8103(D-S)
・
・
Confirm the short circuit of each parts.
D8102,D8103,D8108,D8109
Replace P-PCB.
Confirm the fuse. ⇒ F9701
Replace B-PCB.
Follow the section "A-PCB operation checks".
Confirm the connection of each connectors.
Connect properly.
A A2 connector is removed and checked short-circuits.
1-2, 7-8, 11-12
A Replace A-PCB.
A 13 pin output voltage of A2 connector checks
whether it has changed from "Hi" to "Low".
OK
NG
NG
OK
①
OK
NG
NG
OK
NG
①
OK
NG
OK
NG
NG
OK
NG
OK
OK
②
INF - 23
B
A
When power condition is changed to ON, is each
fan motor rotating ?
Check the each FAN's (Function and Connection)
■ Light source does not turns ON.
Confirm the connection of each connectors.
Connect properly.
Confirm the fuse. ⇒ F9701
Follow the section "D-PCB operation checks".
■ Projection image does not output.
Confirm the connection of each connectors.
Connect properly.
Input signal is other than black, confirm image.
Confirm the each temperature sensor.
Check the each temp. sensor's (Function and Connection)
When power condition is changed to ON, check the
rotation noise of phosphor wheel.
Check the phosphor wheel (Function and Connection)
P
・
Check short-circuits of P2 connector pin 1-3.
( DC390V±20V )
・
・
Check short-circuits of P2 connector pin 4-3.
( DC16V±2V )
No display of DVI-I (Digital) input
Follow the section "DVI-I (Digital) input checks".
No display of HDMI input
Follow the section "HDMI input checks".
No display of DIGITAL LINK input
Follow the section "DIGITAL LINK input checks".
No display of VIDEO input
Follow the section "VIDEO input checks".
No display of COMPUTER input
Follow the section "COMPUTER input checks".
No display of DVI-I (Analog) input
Follow the section "DVI-I (Analog) input checks".
No picture is displayed.
OK
NG
NG
OK
OK
NG
NG
OK
①
OK
②
NG
NG
OK
NG
OK
INF - 24
A
A
FM
A
A
A
A
A
A
A
B
Check cable connection of the A1 connector.
Connect it properly.
Check connector A1-FM1. Replace DMD block.
●
VIDEO Input checks
Either projection image of DVI-I (digital) or HDMI can be
checked.
Either projection image of COMPUTER or DVI-I (Analog)
can be checked.
Check the IC1010 and its associated circuits.
A Check the output waveform of IC1400 (resize LSI).
R1438(FPGACLK), R1674, R1434（LVD CK）
A Replace A-PCB.
A
<IC1300 (FPGA) check>
R1823 output pulse
No signal / Video inputto：22Hz
Other input：Vertical frequency of input signal
A Check the IC1300 and its associated circuits.
Either projection image of DVI-I (digital) or HDMI can be
checked.
Either projection image of COMPUTER or DVI-I (Analog)
can be checked.
Check the IC1010 and its associated circuits.
A Check the output waveform.
L1069(R/Pr), L1070(G/Y), L071(B/Pb).
A
Check the following components and its associated
circuits.
L1066～L1071, C1062, C1065, C1066,
R1042～R1047
Check the output waveform of FL1000(CVBS).
Check the FL1000 and its associated circuits.
Check the output waveform of IC1010.
Check the intput waveform of C1076.
Check the C1076 and its associated circuits.
Check the IC1010 and its associated circuits.
●
COMPUTER input checks
NG
NG
OK
OK
NG
OK
OK
NG
OK
NG
NG
OK
OK
OK
OK
NG
NG
NG
OK
③
③
③
NG
INF - 25
B
A
C
Either projection image of COMPUTER or VIDEO
can be checked.
Check the IC1010 and its associated circuits.
A
Either projection image of DVI-I (digital) or HDMI can be
checked.
A Check the output waveform of IC1010.
R1146(HS), R1147(VS), R1149(CLK)
A Check the IC1010 and its associated circuits.
A Check the output waveform of IC1300(FPGA).
R1373(HS), R1372(VS), R1360(CLK)
A Check the IC1300 and its associated circuits.
A
Check the video signal input waveform of IC1010.
Check the output waveform.
C1081(G/Y), C1079(R/Pr), C1077(B/Pb)
A Check the C1081, C1079 , C1077 and its associated
circuits.
A
Check the sync signal input waveform of IC1010.
Check the output waveform.
Q1025(HD), Q1026(VD)
A
Check the following components and its associated
circuits.
C1011～Q1025, C1012～Q1026(HD&VD)
Check the IC1400 and its associated circuits.
●
DVI-I (Analog) input checks
A Check the output waveform of L1075(G/Y),
L1076(R/Pr) and L1077(B/Pb).
A
Check the following components and its associated
circuits.
L1072～L1077, C1168, C1172, C1173,
R1059～R1064
A Check the video signal input waveform of IC1010.
C1083(G/Y), C1080(R/Pr), C1078(B/Pb)
A
Check the following components and its associated
circuits.
C1083, C1080, C1078
A Check the sync signal input waveform of IC1010.
Q1023(HD), Q1024(VD)
A
Check the following components and its associated
circuits.
C1032～Q1023, C1010～Q1024(HD&VD)
OK
OK
OK
OK
NG
NG
NG
NG
OK
OK
OK
OK
NG
NG
NG
NG
OK
NG
③
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