Sharp XG-V10WE (serv.man8) Service Manual ▷ View online
41
XG-V10WE
AN-SD1E/S422E
TROUBLE SHOOTING TABLE
(Continued)
Checking the chroma and Y signals of IC801
(RGB signal output)
(RGB signal output)
Yes
No
Go to "Checking the video unit
circuit".
circuit".
Yes
No
No
Are there signal inputs at pins (20)
(chroma signal) and (21) (Y signal)
of IC803?
(chroma signal) and (21) (Y signal)
of IC803?
Check IC803 and its peripheral
circuits.
circuits.
Check IC6009 (3-D noise reduction
circuit) and its peripheral circuits.
circuit) and its peripheral circuits.
Go to "Checking IC801 (RGB signal
output circuit)".
output circuit)".
Yes
Are there signal inputs at pins (12),
(31) and (37) of SC401?
(31) and (37) of SC401?
Are there output waveforms at pins
(7) of IC6014 (chroma signal) and
(7), (Y signal)of IC6015?
(7) of IC6014 (chroma signal) and
(7), (Y signal)of IC6015?
Check the IC6009 IC6010 and IC6011
switching and their peripheral circuits.
If there is no signal at pins (1) of
IC6014 and pin (5) of IC6015 and pin
(16) of IC6010 check 3-D noise
reduction circuit (IC6009).
switching and their peripheral circuits.
If there is no signal at pins (1) of
IC6014 and pin (5) of IC6015 and pin
(16) of IC6010 check 3-D noise
reduction circuit (IC6009).
Checking IC806 (3-D noise reduction circuit)
and its peripheral circuits
and its peripheral circuits
Yes
No
Check the buffer circuit of Q6007 thru
Q6011 as well as Q6013 thru Q6014.
Q6011 as well as Q6013 thru Q6014.
Yes
No
Are there signal outputs at pins (55)
(Y signal) and (51)(chroma signal) of
IC8001?
(Y signal) and (51)(chroma signal) of
IC8001?
Check IC6008, IC6010 (memory) and
their peripheral circuits.
their peripheral circuits.
Yes
No
Are there signal outputs at the
emitters of Q6010 (Y signal) and
Q6015 (chroma signal)?
emitters of Q6010 (Y signal) and
Q6015 (chroma signal)?
Check the low-pass circuit around
Q6010, Q6012 and Q6015.
Q6010, Q6012 and Q6015.
Check IC6011, IC6014, IC6015 and
IC801 (RGB signal output circuit).
IC801 (RGB signal output circuit).
Are there signal inputs at pins (40)
(Y signal) and (45)(chroma signal) of
IC6009?
(Y signal) and (45)(chroma signal) of
IC6009?
No colour or unusual tone (NTSC, PAL, PALM, PALN)
Yes
No
Go back to the signal processing
block.
block.
Yes
No
Check the oscillation of X801, X802,
X803 and X804 and their peripheral
circuits.
X803 and X804 and their peripheral
circuits.
Check IC804, IC805 and their
peripheral circuits.
peripheral circuits.
Are there signal outputs at pins
(46)(R-Y) and (45)(B-Y) of IC801?
(46)(R-Y) and (45)(B-Y) of IC801?
Is there chroma signal input at pin
(20) of IC801?
(20) of IC801?
42
XG-V10WE
AN-SD1E/S422E
TROUBLE SHOOTING TABLE
(Continued)
No or unusual Y signal
Yes
No
Go back to the signal processing
block.
block.
No
Check IC803 and its peripheral
circuits.
circuits.
Yes
No
Check IC804 and its peripheral
circuits as well as IC806 (AGC).
circuits as well as IC806 (AGC).
Yes
Check IC804 and its peripheral
circuits.
circuits.
Is there Y signal output at pin (17) of
IC804?
IC804?
Is there Y signal output at pin (40) of
IC803?
IC803?
Is there Y signal input at pin (21) of
IC803?
IC803?
No or unusual horizontal sync
Yes
No
Check IC803 and its peripheral
circuits.
circuits.
Yes
No
Is there horizontal sync pulse output
at pin (9) of IC802?
at pin (9) of IC802?
Check the pulse shaping circuit of
IC801 and IC802.
IC801 and IC802.
Go to "Trouble shooting table for PC
I/F unit".
I/F unit".
Is there horizontal sync pulse output
at pin (56) of IC803?
at pin (56) of IC803?
No or unusual vertical sync
No
Check IC803 and its peripheral
circuits.
circuits.
Yes
Go to "Trouble shooting table for
PC I/F unit".
PC I/F unit".
Is there vertical sync pulse output at
pin (4) of IC803?
pin (4) of IC803?
43
XG-V10WE
AN-SD1E/S422E
TROUBLE SHOOTING TABLE
(Continued)
Yes
Checking the output PWB unit
Is there signal input at
SC6801?
Are voltages applied to EA
connectors and SC8404,
SC8405 and SC8502?
SC6801?
Are voltages applied to EA
connectors and SC8404,
SC8405 and SC8502?
Yes
No
No
No
Check IC2101, IC2102,
IC2201, IC2202, IC2301,
IC2302 and their peripheral
circuits.
IC2201, IC2202, IC2301,
IC2302 and their peripheral
circuits.
Are there signal outputs at
pins (17) of IC2101, IC2102,
IC2201, IC2202, IC2301,
IC2302?
pins (17) of IC2101, IC2102,
IC2201, IC2202, IC2301,
IC2302?
Yes
No
Are there signal inputs at pin
(47) of IC1101, IC1102,
IC1201, IC1202, IC1301 and
IC1302?
(47) of IC1101, IC1102,
IC1201, IC1202, IC1301 and
IC1302?
Yes
No
Check IC1101, IC1102,
IC1201,IC1202, IC1301,
IC1302 and their peripheral
circuits.
IC1201,IC1202, IC1301,
IC1302 and their peripheral
circuits.
Are there signal outputs at pins
(17), (19), (21), (28), (30) and
(32) of IC1101, IC1102,
IC1201, IC1202, IC1301 and
IC1302?
(17), (19), (21), (28), (30) and
(32) of IC1101, IC1102,
IC1201, IC1202, IC1301 and
IC1302?
Yes
Yes
No
If there is no signal input at
pins (15) and (30) of
SC1101, SC1201 and
SC1301, check IC1601
and their peripheral
circuits.
pins (15) and (30) of
SC1101, SC1201 and
SC1301, check IC1601
and their peripheral
circuits.
No
If there is no signal input at
pins (1) and (32) of SC1101,
SC1201 and SC1301, check
the switching circuit and
amplifier circuit of IC1101,
IC1201, IC1301, IC1102,
IC1202, IC1302 and their
peripheral circuits.
pins (1) and (32) of SC1101,
SC1201 and SC1301, check
the switching circuit and
amplifier circuit of IC1101,
IC1201, IC1301, IC1102,
IC1202, IC1302 and their
peripheral circuits.
Are there signal inputs at
SC1101, SC1201 and
SC1301?
SC1101, SC1201 and
SC1301?
Check IC1611, IC1612,
IC1613, IC1615, IC1621,
IC1622, IC1623, IC1624
and their peripheral
circuits.
IC1613, IC1615, IC1621,
IC1622, IC1623, IC1624
and their peripheral
circuits.
Check the R, G and B panels.
If there is no signal at EA
connector or SC8404, SC8405
and SC8502, go to Checking
the power unitblock.
connector or SC8404, SC8405
and SC8502, go to Checking
the power unitblock.
If there is no signal at SC8404
and SC8405, go to "Trouble
shooting table for PC I/F unit".
and SC8405, go to "Trouble
shooting table for PC I/F unit".
If there is no signal at SC6801,
go to the video system block.
go to the video system block.
Check IC2101, IC2102, IC2201,
IC2202, IC2301, IC2302 and
their peripheral circuits.
IC2202, IC2301, IC2302 and
their peripheral circuits.
44
XG-V10WE
AN-SD1E/S422E
TROUBLE SHOOTING TABLE
(Continued)
No audio output
Yes
No
Check the input, the switching circuit
of IC403 and IC404, and their
peripheral circuit.
of IC403 and IC404, and their
peripheral circuit.
Are there audio signal inputs at pins
(2) and (23) of IC301?
(2) and (23) of IC301?
Yes
No
Check IC302 and its peripheral
circuits.
circuits.
Are there audio signal outputs at pins
(3) and (6) of IC302?
(3) and (6) of IC302?
Check IC302 and its peripheral
circuits, and the SP connectors and
speakers.
circuits, and the SP connectors and
speakers.
If the voltage at pin (7) of IC302 is not
as specified, check Q302, Q303 and
their peripheral circuits.
as specified, check Q302, Q303 and
their peripheral circuits.
Checkig the Power Unit
There is no voltage output at
EA connector.
EA connector.
No
No
No
Yes
Yes
Yes
Is EA connector disconnected
or loose?
or loose?
Is R727 broken?
Is AC voltage (85-264V)
applied across the BA
connector?
applied across the BA
connector?
Reconnect the EA connector.
There is a short-circuit along
the EA output line. Using a
tester, check the resistance
between each voltage line and
the ground.
the EA output line. Using a
tester, check the resistance
between each voltage line and
the ground.
No
Replace F1701.
Replace R727 or Q701.
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