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PG-F310X/XG-F315X

5 – 5

                      
Does the lamp turn on when the 
power is turned on?

YES

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

                      

NO

Is the lamp tight in the socket?

YES

Securely insert the connectors.

                      

NO

Has the FPC cable to SC3801 come 
off or is it loose?

YES

Securely insert the connectors.

                      

NO

Is rotating sound of the color wheel 
heard?

NO

Check IC3802 and peripheral 
circuits.

(Refer to the waveform chart 

.)

YES

Replace the color wheel.

YES

Is approx. 0.7 V applied to TL1706?

NO

Check IC1701 and peripheral 
circuits.

(Refer to the waveform chart 

.)

YES

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

YES

Fully insert the connectors or replace 
the harnesses.

                      

NO

Dose the lamp turn on after the 
replacement?

YES

Replace the lamp.

                      

NO

Is 340 V DC applied to both ends of 
C917?

NO

Go to “Power supply PWB check”.

YES

Is D908 or D907 short-circuited?

YES

Replace both D908 and D907.

                      

NO

Is D906 or D910 short-circuited?

YES

Replace D906 or D910, whichever is 
short-circuited.

2

1

PG-F310X/XG-F315X

5 – 6

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

YES

Securely insert the connectors.

                      

NO

Is each cooling fan rotating?

NO

Check the cooling fan.

YES

The lamp light-up. After about 30 sec-
onds, the TEMP LED flash red and 
the lamp turn off.

YES

Check the TEMP1 and TEMP0 
signal line.

                      

NO

Is approx. 3 V applied to TL1721?

NO

Check peripheral circuits of Q1721.

YES

Is 12 V applied to TL1761?

NO

Check IC1761, IC3802 and peripheral 
circuits.

Go to “DMD system check”.

YES

Is 2.5 V applied to TL3801?

NO

Is 3.3 V applied to TL3802?

YES

Check L3802 and peripheral 
circuits.

YES

NO

Check L3801 and peripheral 
circuits.

Is 5 V applied to TL3814?

NO

Check L3806 and peripheral circuits.

YES

Is 5 V applied to TL1712?

NO

Is 5 V applied to TL1712 with P1703 
removed?

NO

Check connection of FB1710 and 
Q1707 and Q1708.

YES

YES

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

NO

Check PHOTO SENSOR PWB.

YES

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

NO

Check IC1701 and peripheral circuits.

YES

Check the power supply ballast PWB.

PG-F310X/XG-F315X

5 – 7

                                          
Send component signal or RGB signal of 1080i (or 720P) from 
COMPUTER/COMPONENT Terminal or DVI-I Terminal.
Select COMPUTER or DVI-Analog using keys on the main unit 
or the remote control.

YES

Is image displayed normally?

YES

End

                                          

NO

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

NO

Check IC3001 and the peripheral circuits.

YES

Is 3.3V applied to TL1792?

NO

Check IC1792 and peripheral circuits.

YES

Is 3.3V applied to TL3802?

NO

Check IC3802 and peripheral circuits.

YES

Check IC3201 and peripheral circuits.

                                            
Send the DVI digital signal to the DVI-I Terminal.
Select “DVI-D Computer” using the keys on the main unit or the 
remote controller.

                                            
Does an image appear properly?

YES

End

                                            

NO

Is the DVI signal supplied to R3231, R3232, R3233, R3234, 
R3235, R3236, R3237 and R3238?

NO

Check DVI-I Terminal, L2801, L2802, L2803, L2804, D2803, 
D2804 and peripheral circuits.

YES

Is 3.3V applied to TL1792?

NO

Check IC1792 and peripheral circuits.

YES

Is 3.3V applied to TL3802?

NO

Check IC3802 and peripheral circuits.

YES

Check IC3201 and peripheral circuits.

PG-F310X/XG-F315X

5 – 8

                                            
Send S-Video signal (color signal) from S-Video Terminal. Select 
S-Video using keys on the main unit or the remote control.

                                            
Is image displayed normally?

YES

End

                                            

NO

Is image displayed in black and white?

YES

Check S-VIDEO terminal and peripheral circuits of Q3311.

                                            

NO

Is S-VIDEO signal (Y) sent to R3306?

NO

Check S-VIDEO terminal and peripheral circuits of Q3301.

YES

Is 1.8 V applied to TL3358?

NO

Check IC3352 and peripheral circuits.

YES

Is 3.3 V applied to TL1792?

NO

Check IC1792 and peripheral circuits.

YES

Is 3.3 V applied to TL3802?

NO

Check IC3802 and peripheral circuits.

YES

Check IC3351 and peripheral circuits.

                                            
Send VIDEO signal from VIDEO Terminal. Use buttons on the 
main unit or the remote control to select VIDEO.

                                            
Is image displayed normally?

YES

End

                                            

NO

Is VIDEO signal sent to C3326?

NO

Check VIDEO terminal and peripheral circuits of Q3321.

YES

Is 1.8 V applied to TL3358?

NO

Check IC3352 and peripheral circuits.

YES

Is 3.3 V applied to TL1792?

NO

Check IC1792 and peripheral circuits.

YES

Is 3.3 V applied to TL3802?

NO

Check IC3802 and peripheral circuits.

YES

Check IC3351 and peripheral circuits.