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

pg-f312x (serv.man5) service manual
Model
PG-F312X (serv.man5)
Pages
9
Size
542.68 KB
Type
PDF
Document
Service Manual
Brand
Device
Projector / Troubleshooting Table
File
pg-f312x-sm5.pdf
Date

Read Sharp PG-F312X (serv.man5) Service Manual online

XR-32S/XR-32X/PG-F212X/PG-F312X
5 – 1
XR-32S
Service Manual
 
CHAPTER 5. 
TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
Checking the basic operation
                       
Does the power LED light up or flash 
in red or green?
NO
Has P1701 come off or is it loose?
YES
Fully insert the connector.
YES
NO
Does the set function with its keys or 
the remote controller?
NO
Go to “Main PWB check”.
YES
Lamp does not turn on or it turns off in 
a short time.
YES
Go to “Checking the lamp light-up”.
                       
NO
Nothing is displayed or white vertical 
line noise appears.
YES
Go to “DMD system check”.
                       
NO
Colors are not displayed normally.
Color deviation and color fluctuation 
occur.
YES
Check PHOTO SENSOR circuit.
                       
NO
Are RGB and component input 
displayed normally?
NO
Go to “RGB and component signal 
check”.
YES
Is VIDEO input displayed normally?
NO
Go to “VIDEO input check”.
YES
Is S-VIDEO input displayed normally?
NO
Go to “S-VIDEO input check”.
YES
END
XR-32S/XR-32X/PG-F212X/PG-F312X
5 – 2
Main PWB check
                                            
Is 12.8 V applied to TL1703?
NO
Go to “Power supply ballast PWB check”.
YES
Is approx. 5.5 V applied to TL1702?
NO
Go to “Power supply ballast PWB check”.
YES
Is 12.5 V applied to TL3819?
NO
Check IC3808 and Q3805 and peripheral circuits.
YES
Is 1.2 V applied to TL3813?
NO
Check Q3802 and peripheral circuits.
YES
Is 3.3 V applied to TL3802?
NO
Check L3801 and peripheral circuits.
YES
Is 2.5 V applied to TL3801?
NO
Check L3802 and peripheral circuits.
YES
Is 5 V applied to TL3814?
NO
Check L3806 and peripheral circuits.
YES
Is 3.3 V applied to TL1792?
NO
Check IC1792 and peripheral circuits.
YES
Is 12 V applied to TL1761?
NO
Check IC1761 and peripheral circuits.
YES
Is 1.8 V applied to TL3809?
NO
Check IC3803 and peripheral circuits.
YES
Is 1.2 V applied to TL3811?
NO
Check Q3801 and peripheral circuits.
YES
Is 2.8 V applied to TL3807?
NO
Check IC3807 and IC3802 and peripheral circuits.
YES
Is 2.8 V applied to TL3808?
NO
Check IC3802 and peripheral circuits.
YES
Is 3.3 V applied to TL2051?
NO
Check that it is set to the NORMAL side. Or remove S2001.
YES
Is rectangular wave of 20 MHz applied to TL2201?
NO
Check X2201 and IC2204 and peripheral circuits.
YES
Check IC2001, IC2262, IC2232 and peripheral circuits.
XR-32S/XR-32X/PG-F212X/PG-F312X
5 – 3
DMD system check
                                   
Check P2501 for breakage and solder crack and peripheral resis-
tance for solder crack.
                                   
Check SC9101 on the DMD PWB for breakage and solder crack.
                                   
Is there any vertical stripe (block noise) on the Screen?
YES
The main PWB and DMD PWB are in poor contact.
Check the contact surface for dirt and smear.
Check the DMD connector for breakage.
Reassemble the DMD, optical mechanism, and DMD PWB.
                                   
NO
Is the screen all black?
NO 
                                    
YES
Is 12.5 V applied to IC3803 pin (2) and 1.8 V to 
TL3809?
NO
Check IC3803, IC2205, and their peripheral circuits.
                                    
YES
Is 400 MHz on IC2201 pin (26) and pin (27)?
NO
Check IC2201 and peripheral circuits.
                                    
YES
Is 320 MHz on IC2204 pin (13) and pin (14)?
NO
Check IC2204 and peripheral circuits.
                                    
YES
Is approx. 8 V applied to TL9303 on the DMD PWB?
        NO
YES
Is approx. 26 V applied to TL9301 on the DMD PWB?
NO
Check IC9301 and peripheral circuits.
YES
        NO
Is approx. -26 V applied to TL9302 on the DMD PWB?
YES
The main PWB and DMD PWB are in poor contact.
Check the contact surface for dirt and smear.
Check the DMD connector for breakage.
Reassemble the DMD, optical mechanism, and DMD PWB.
XR-32S/XR-32X/PG-F212X/PG-F312X
5 – 4
Power supply PWB check
                      
Is 13 V applied to pins (2), (3) and (4) 
of the connector P704?
NO
YES
Does the lamp turn on?
YES
Check the main PWB.
                      
NO
Are connectors P704 and CN901 fully 
inserted?
NO
Securely insert the connectors.
YES
Is DC voltage of 380 V applied to both 
ends of C740?
NO
Is pin (11) of the connector P704 at 
“H”?
NO
Check the main PWB.
YES
YES
Check peripheral circuits of IC707.
Is F705 in the OPEN status?
NO
Is LAMP-EN/SYNC signal properly 
sent to pin (14) of the connector 
P704?
(Refer to the waveform chart 
.)
NO
Check the main PWB.
YES
YES
Check circuits F705 and after or 
replace F705.
Are GATE waveforms of Q901 appro-
priate?
(See waveform diagram 
.)
NO
Check the ballast PWB.
                   
                    
Are connectors P701 and P702 fully 
inserted?
NO
Securely insert the connectors.
YES
Is AC voltage between 100 - 240 V 
applied to both ends of C702?
NO
Replace F701.
YES
Is the bimetal broken?
(Connection between 1 and 2 of 
P702)
NO
Press the red button on the bimetal.
YES
Is R729 open?
NO
Is F704 open?
NO
Check peripheral circuits of IC704.
YES
YES
Check that P704 connector pin (11) 
is at “H”. Replace R729.
Replace F704.
Check that the power supply FAN 
FB and FC are not stopped.
1
1
6
1
Page of 9
Display

Download Sharp PG-F312X (serv.man5) Service Manual (Repair Manual)

Here you can read online and download Sharp PG-F312X (serv.man5) Service Manual in PDF. PG-F312X (serv.man5) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp PG-F312X (serv.man5) Projector. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.