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INF-27

* The letters in the left of inspection items indicate the P.C. Boards related to their respective descriptions.

* Please check items with the interlock switch on. 

Check the connection of each connector

 

AC inlet - P01, P02, P03, P04, A24, A36

NG

Connect the cables properly

Confirm the connection of each connector on A-P.C 

Board and lamp.

Confirm the lamp fixing screws.

NG

Connect the cables properly

P

Disconnect the connectors [P02],[P03]. Check the short 

circuit at pins 1, 14 or 6-8 of connector P03.

NG

A

Replace the [A] P.C.Board

Confirm the lamp condition

NG

Replace the lamp

Is each thermal sensor operating in normal?

NG

Check each thermal sensor and connection

Is each fan rotating when the projector turns on?

NG

Check each fan and connection

Next page

OK

OK

OK

OK

OK

OK

K Confirm the fuse [F601]

NG

P

Replace fuse

P

Replace [P] P.C.Board

P

Confirm the short circuit of Q611, Q612, Q613, Q614, Q615.

NG

P

Replace the shorted parts

OK

OK

INF-28

P

Confirm the voltages between pins of connector [P02] below;

(1) - (3)   DC 380V

NG

P

Check or replace [P] P.C.Board

A

Confirm that the voltage at pin (4) of connector [K8H] changes 

from  High to Low when the power is ON.

NG

A

Check or replace [A] P.C.Board

A

Confirm that the voltage at pin (2) of connector [P03] changes 

from Low to High when the power is ON.

NG

A

Check or replace [A] P.C.Board

OK

OK

OK

Previous page

B

Confirm the voltages between pins of connector [B1] below;

  (1) - (2)   DC 380V

  (3) - (4)   DC 18V

NG

B Replace [B] P.C.Board

B Check or replace [B] P.C.Board

P

Confirm the voltages between pins of connector [P02] below;

(3) - (4)   DC 18V

NG

P

Check or replace [P] P.C.Board

OK

OK

INF-29

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 HDMI1 input

Follow the section "HDMI1 input check"

No picture with HDMI2 input

Follow the section "HDMI2 input check"

No picture with NETWORK input

Follow the section "NETWORK input check"

No picture with all of inputs

(3)

OK

A

Check each power supply voltage of microprocessor &  

Scale IC(IC301), FPGA(IC401),  

Gamma IC (IC510), panel driver IC(IC521,IC531,IC561) 

NG

A

Check IC522, IC532, IC562, IC512, IC514, IC515 and 
peripheral circuits
IC8351, IC8371, IC3004, IC3006, IC3007, IC3008, 
IC4010, IC4020, IC4030 and peripheral circuits.

A

Check the waveform (Input clock) at R2110 of IC2301

NG

A

Check IC2301, IC401 and peripheral circuit

A

Check the waveform 

at IC521, IC531, IC561(SH IC), R6111, R6112, R6110 (R)

R6116, R6117 (G), R6121, R6122, R6120 (B)

NG

A

Check IC521, IC531, IC561 (SH IC) and peripheral circuit

A

Check the waveform (Display output clock) at L3003 of 

IC301(Resize&Micon)

NG

A

Check IC538, IC528, IC529, IC533, IC562, IC522, 
IC2306, IC2304, IC2305, IC301 and peripheral circuit

A

Check the input clock at R5059 of IC510(Gamma IC)

NG

A

Check IC510 and peripheral circuit

A

Check the connection of connectors [A60], [A61], [A62]

NG

A

Connect the connectors securely

A

Replace [A] P.C.Board

OK

OK

OK

OK

OK

OK

NG

INF-30

Check the cable between [A01] and [J01]

NG

Replace cable

A

Check the sync input waveform at IC1004, IC1005.

NG

A

Check IC1004, IC1005 and peripheral circuits

Input (RGB2) can be displayed

NG

A

Check IC4001,IC5301 and IC4701 and peripheral circuit

A

Check the video input waveform at IC301

C3214(G/Y), C3049(R/Pr), C3051(B/Pb)

NG

A

Check C3214(G/Y), C3049(R/Pr), C3051(B/Pb) and 
peripheral circuit

J

Check the waveform at pin 11 of [J01]

NG

J

Replace [J] P.C.Board

One of the inputs (HDMI1,HDMI2,DIGITAL LINK) can be dis-
played

NG

A

Check IC301 and peripheral circuits

A

Check the output waveform at L1009, L1010, L1011, Q1005, 

Q1006, Q1007.

NG

A

Check L1009, L1010, L1011, Q1005, Q1006, Q1007 and 
peripheral circuit

A

Check IC301 and peripheral circuits

A

Check IC301 and peripheral circuits

One of the inputs (HDMI1, HDMI2, RGB1, RGB2, DIGITAL LINK) 
can be displayed

NG

One of the inputs (HDMI1,HDMI2, VIDEO) can be displayed

NG

(3)

(3)

OK

OK

OK

OK

OK

OK

OK

OK

OK