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Securely insert the connectors.

Replace F701.

Press the red button on the 
bimetal.

Are connectorsP701 and 
P702 fully inserted?

Is AC voltage between 100  

− 240 V applied to both 
ends of C707?

Is the bimetal broken? 
(Connection between 1 and 
2 of P702)

Is R717 open?

Check that P704 connector 
pin (11) is at "H". Replace 
R717.

Is R705 open?

Replace F705.
Check that the power 
supply FAN FB and FC 
are not stopped.

Check peripheral circuits of 
IC703.

1

Go to "Check when the 
lamp turns off soon after 
turning on".

Securely insert the 
connectors.

Securely insert the 
connectors.

Check IC3581 and 
peripheral circuits. (Refer 
to the waveform chart 2.)

Check IC1701 and 
peripheral circuits. (Refer 
to the waveform chart 1.)

Fully insert the connectors 
or replace the harnesses.

Replace the lamp.

Go to "Power supply PWB 
check".

Replace both D911 and 
D912.

Replace D914 or D910, 
whichever is short-circuited.

Replace the color wheel.

Does the lamp turn on 
when the power is turned 

Is the lamp tight in the 
socket?

Has the FPC cable to 
SC3581 come off or is it 
loose?

Is rotating sound of the 
color wheel heard?

Is approx. 0.7 V applied to 
TL1706?

Has the harness connected 
to P702 on the power 
supply unit come off, or is it 
loose? Otherwise, is it 
broken?

Dose the lamp turn on after 
the replacement?

Is 340 VDC applied to both 
ends of C914?

Is D911 or D912 short-
circuited?

Is D914or D910 short-
circuited?

Securely insert the 
connectors.

Check the cooling fan.

Check peripheral circuits of 
Q1721.

Check IC1761, IC3581 and 
peripheral circuits.

Go to "DMD system check".

Is 3.3 V applied to TL1762?

Check IC1791 and 
peripheral circuits.

Check PHOTO SENSOR 
PWB.

Check IC1701 and 
peripheral circuits.

Check IC1762 and 
peripheral circuits.

Is 5 V applied to TL1712 
with P1703 removed?

Check connection of 
FB1710.

Have connectors P1703, 
P1721, P1722, P1723 and 
P1724 come off or are they 
loose?

Is each cooling fan 
rotating? 

Is approx. 3 V applied to 
TL1721?

Is 12 V applied to TL1761?

Is 2.5 V applied to 
TL1763?

Check IC1763 and 
peripheral circuits.

Is 5 V applied to TL1712?

Is the signal of 180 Hz 
sent to TL1716?(When 
vertical frequency of the 
input signal is 60 Hz)

Is the signal of 180 Hz 
sent to TL1706? (When 
vertical frequency of the 
input signal is 60 Hz)

Is 5 V applied to TL1791?

Check the power supply 
ballast PWB.

End

Check IC3002 and the 
peripheral circuits (check 
IC3052 for INPUT 2).

Check IC1792 and 
peripheral circuits.

Check IC1763 and 
peripheral circuits.

Send component signal or 
RGB signal of 1080i (or 
720P) from INPUT 1 or 
INPUT 2. Select INPUT 1 
or INPUT 2 using keys on 
the main unit or the remote 
control.

Is image displayed 
normally?

Are picture signals sent to 
TL3201, TL3204, and 
TL3205?

Is 3.3V applied to TL1792?

Is 3.3V applied to TL1762?

Check IC3201 and 
peripheral circuits.