DOWNLOAD Sharp PG-A20X (serv.man12) Service Manual ↓ Size: 14.88 KB | Pages: 7 in PDF or view online for FREE

Model
PG-A20X (serv.man12)
Pages
7
Size
14.88 KB
Type
PDF
Document
Service Manual
Brand
Device
Projector / Troubleshooting tables
File
pg-a20x-sm12.pdf
Date

Sharp PG-A20X (serv.man12) Service Manual ▷ View online

31
PG-A20X
TROUBLE SHOOTING TABLE
YES
YES
NO
Checking the basic 
performance
Is the POWER LED on or 
flickering in red or green?
Go to "Checking the 
power unit"
Go to "Checking the lamp 
light-up"
NO
Is the set turned on by the 
set’s or remote controller’s 
power key?
Go to "Checking the 
microcomputer 
peripherals".
NO
Go to "Checking the RGB 
sync".
Go to "Checking the RGB 
signal"
Go to "Checking the 
video system".
End
NO
Is the cooling fan 
running? Is the lamp on?
Is the user menu 
displayed?
YES
YES
32
PG-A20X
YES
YES
YES
YES
NO
Checking the power unit
Are the connectors CN701, 
CN702 and CN751 
inserted completely?
Insert the connectors 
CN701, CN702 and 
CN751 tightly?
Replace the bimetal 
NO
Replace F701.
NO
Check Q702 for damage. 
Replace as required.
NO
Is the bimetal switch off?
Is there AC voltage (110-
240V) applied across 
C701?
Disconnect the CN751 
connector. Is there 6V 
output at pins (3) and (4)?
Check the MAIN PWB for 
short-circuit. 
33
PG-A20X
YES
YES
YES
YES
YES
NO
Checking the 
microprocessor 
peripherals
Is a voltage of about 3.3V 
DC applied to pins (3) and 
(5) of IC1703?
Check IC1703 and its 
peripheral circuits, or IC1702 
and its peripheral circuits.
Is the lamp access lid 
open? Is the P2006 (LF) 
tight in the socket? 
Check IC2002 and its 
peripheral circuits.
Check IC8202, IC8203, 
IC2601 and their 
peripheral circuits.
Check IC1704 and its 
peripheral circuits.
NO
Is about DC 2.5V applied 
between pins (5) and (8) of 
IC1704?
NO
Check IC8009 and its 
peripheral circuits.
NO
See if the fan is running as 
specified. Or check IC8003 
and its peripheral circuits.
NO
Is about DC 2.5V applied 
between pins (4) and (3) of 
IC8009?
Is there about DC3V 
applied at pin (21) of 
IC2002? Do the D0 thru D7 
signals appear as pulse 
signals on the oscilloscope 
screen?
Fully close the lamp access 
lid. Or insert the P2006 (LF) 
tightly in the socket.
YES
Check IC8010, IC8011 and 
their peripheral circuits.
NO
Is there 133-MHz clock 
output at pin (6) of IC8010? 
Is there 75-MHz clock 
output at pin (6) of IC8011?
34
PG-A20X
YES
YES
YES
YES
Checking the lamp 
light-up
Reconnect the CN751 
and CN752 harnesses 
tight enough. Or replace 
these harnesses.
Go to "Checking the 
power unit".
Replace the ballast unit.
NO
Go to "Checking the 
microcomputer 
peripherals".
NO
NO
Are DC350-400V voltages 
applied between the pins 
of CN703?
NO
Is the lamp socket 
disconnected?
Reconnect the lamp 
socket tightly.
Are the CN751 and 
CN752 harnesses tight in 
position in the power unit 
and ballast unit as well? 
Are these harnesses free 
of damage?
Are there 3V (High level) 
and 1V applied at pins (1) 
and (13), respectively, of 
CN751 in the power unit?
NO
Checking the RGB 
sync
Check IC6001 and its 
peripheral circuits.
NO
YES
Are there signal inputted 
into pins (30),
(31) of IC6004?
Are there signal inputted 
into pins (2)
of IC5002, IC5015?
Check RGB terminal and 
its peripheral circuits
Page of 7
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Sharp PG-A20X (serv.man12) Service Manual ▷ Download

  • DOWNLOAD Sharp PG-A20X (serv.man12) Service Manual ↓ Size: 14.88 KB | Pages: 7 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp PG-A20X (serv.man12) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp PG-A20X (serv.man12) Projector. Information contained in Sharp PG-A20X (serv.man12) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.