Troubleshooting - Panasonic PT-RZ470 Series Service Manual

6. 4. Troubleshooting

* 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.
Confirm each cable and connector connection.
K1～P1、P3～A2
A2 connector is removed and checked short-circuits.
A
1-2, 7-8, 11-12
①
K
Confirm the fuse. ⇒ F8101、F8201
P
・Confirm the short circuit of ZNR. ⇒Z8101, Z8102
・Confirm the short circuit of each parts.
P D8101,D8106,D8107,Q8102(D-S),Q8103(D-S)
・Confirm the short circuit of each parts.
D8102,D8103,D8108,D8109
Confirm the fuse. ⇒ F9701
B
②
Confirm the short circuit of each parts.
B
Q9731(D-S),Q9732(D-S),Q9731(D-S),Q9732(D-S)
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 connection of each connectors.
A2 connector is removed and checked short-circuits.
A
1-2, 7-8, 11-12
13 pin output voltage of A2 connector checks
A
whether it has changed from "Hi" to "Low".
Follow the section "A-PCB operation checks".
OK
OK
OK
OK
OK
OK
OK
OK
NG
NG
Connect the connectors or install top cover properly.
NG
A Replace A-PCB.
NG
Replace P-PCB.
P
NG
P Replace P-PCB.
NG
Replace B-PCB.
B
NG
B Replace B-PCB.
NG
Connect properly.
NG
A Replace A-PCB.
OK
①
INF - 22