PG-F312X (serv.man5). Troubleshooting Table - Sharp Projector Service Manual (repair manual). Page 8

XR-32S/XR-32X/PG-F212X/PG-F312X

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 R3305?

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.