XG-C40XE (serv.man5). Service Manual - Part 2 - Troubleshooting (32-47) — Sharp Projector Service Manual (repair manual)

Model
XG-C40XE (serv.man5)
Pages
16
Size
219.4 KB
Type
PDF
Document
Service Manual
Brand
Device
Projector / Service Manual - Part 2 - Troubleshooting (32-47)
File
xg-c40xe-sm5.pdf
Date

View Sharp XG-C40XE (serv.man5) Service Manual online

32
XG-C40XU/XE
Checking the PWB performance
RGB input in trouble
Feed test pattern signal from
PC.
Yes
No
Use specified cable.
Is specified cable connected
between PC and projector?
Yes
No
Power circuit in trouble.
Is supply voltage as specified?
Yes
No
Check the connectors, starting
from the PC input circuit.
Does image appear?
Video input in trouble
Go to "Checking the video unit
circuit".
Through-output in trouble
Through-output circuit in
trouble.
Remote control in trouble
Go to "Checking the remote
control".
Go to "Trouble shooting table
for PC I/F unit ".
TROUBLE SHOOTING TABLE
33
XG-C40XU/XE
Checking the video unit circuit    
Yes
No
Check the IC6001 selector switch, 
terminal voltage and input circuit.
Yes
No
Is there video signal input at IC6004?
Check the low-pass and buffer 
circuits of Q6009 thru Q6015.
Yes
No
Are there signal outputs at pins (6) 
and (8) of IC6004?
Check IC6004 and its peripheral 
circuits (bias).
Yes
No
Check the low-pass and buffer circuits 
of Q6002 thru Q6008. Is the signal as 
specified?
Go to "Checking IC801 (RGB signal 
output circuit)".
Is there video signal output at pin (7) 
of IC6001?
Check Q6002 thru Q6008 and their 
peripheral circuits.
Checking the video system
Yes
No
Go to "Lamp fails to light-up".
Yes
No
Is specified voltage fed to EA  
connectors?
Check the power circuit and its parts.
Yes
No
Are there signal inputs at pins (3) and 
(29) of P402?
Are there signals at pin (4) of IC401 
and pin (4) of IC402?
Are there signal outputs at pins (3) 
and (6) of IC816?
Yes
Check the video unit circuit 
(IC6004 and its  peripheral 
circuits).
No
Check the oscillation circuit 
of IC401 and IC402, and 
their peripheral circuits.
Yes
Go to "Checking IC801 
(RGB signal output circuit)".
No
Check IC816, IC806 and 
their peripheral circuits as 
well as switching circuit.
Is the lamp on?
TROUBLE SHOOTING TABLE 
(Continued)
34
XG-C40XU/XE
Checking IC801 (RGB signal output circuit)
Yes
No
Check the data transfer and other
performance at pins (17) and (18) of
video IC801.
No
Go to "No colour or unusual tone",
"No Y signal" or "Out of sync".
Yes
No
Are there output waveforms at the
emitters of Q1501, Q1502 and
Q1503?
Check Q1501 thru Q1503, SC1501
and their peripheral circuits.
No
Are there output waveforms at the
emitter of Q1505, Q1506 and Q1507?
Check IC1501, Q1505 thru Q1507
and their peripheral circuits.
Yes
Are there RGB output waveforms at
pins (31), (32) and (33) of IC801?
Checking the chroma and Y signals of IC801
(RGB signal output)
Yes
No
Go to "Checking the video unit
circuit".
Yes
No
Check the IC816 switching and their
peripheral circuits. If there is no signal
at pins (9) and (1) of IC816, check 3-D
noise reduction circuit (IC806).
No
Are there signal inputs at pins (20)
(chroma signal) and (21) (Y signal)
of IC801?
Check IC801 and its peripheral
circuits.
Check IC806 (3-D noise reduction
circuit) and its peripheral circuits.
Go to "Checking IC801 (RGB
signal output circuit)".
Yes
Are there signal inputs at pins (12)
(Y signal) and (19)(chroma signal) of
P402?
Are there output waveforms at pins
(3)(chroma signal) and (6)
(Y signal)of IC816?
Go to "Trouble shooting table for PC
I/F unit".
TROUBLE SHOOTING TABLE 
(Continued)
35
XG-C40XU/XE
Checking IC806 (3-D noise reduction circuit)
and its peripheral circuits
Yes
No
Check the buffer circuit of Q814 thru
Q816 as well as Q903 thru Q906.
Yes
No
Are there signal outputs at pins (55)
(Y signal) and (51)(chroma signal) of
IC806?
Check IC806, IC807 (memory) and
their peripheral circuits.
Yes
No
Are there signal outputs at the
emitters of Q817 (Y signal) and Q910
(chroma signal)?
Check the low-pass circuit around
Q817, Q907 and Q910.
Check IC816 and IC801 (RGB signal
output circuit).
Are there signal inputs at pins (40)
(Y signal) and (45)(chroma signal) of
IC806?
No colour or unusual tone (NTSC, PAL)
Yes
No
Go back to the signal processing
block.
Yes
No
Check the oscillation of X801 and
X802, and their peripheral circuits.
Check IC803, IC814 and their
peripheral circuits.
Are there signal outputs at pins
(46)(R-Y) and (45)(B-Y) of IC801?
Is there chroma signal input at pin
(20) of IC801?
TROUBLE SHOOTING TABLE 
(Continued)
36
XG-C40XU/XE
No or unusual Y signal
Yes
No
Go back to the signal processing
block.
No
Check IC801 and its peripheral
circuits.
Yes
No
Check IC803 and its peripheral
circuits as well as IC805 (AGC).
Yes
Check IC803 and its peripheral
circuits.
Is there Y signal output at pin (17) of
IC803?
Is there Y signal output at pin (40) of
IC801?
Is there Y signal input at pin (21) of
IC801?
No or unusual horizontal sync
Yes
No
Check IC801 and its peripheral
circuits.
Yes
No
Is there horizontal sync pulse output
at pin (9) of IC603?
Check the pulse shaping circuit of
IC602 and IC603.
Check IC604 and its peripheral
circuits, and go to "Trouble shooting
table for PC I/F unit".
Is there horizontal sync pulse output
at pin (56) of IC801?
No or unusual vertical sync
No
Check IC801 and its peripheral
circuits.
Yes
Check IC604 and its peripheral
circuits, and go to "Trouble shooting
table for PC I/F unit".
Is there vertical sync pulse output at
pin (4) of IC801?
TROUBLE SHOOTING TABLE 
(Continued)

Download Sharp XG-C40XE (serv.man5) Service Manual (Repair Manual)

Here you can view online or download Sharp XG-C40XE (serv.man5) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp XG-C40XE (serv.man5) Projector. Information contained in Sharp XG-C40XE (serv.man5) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).