Read Sharp LC-32GA5E (serv.man9) Service Manual online
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LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
TROUBLE SHOOTING TABLE
Previously to start following the behing troubleshooting tables, consider the below situa-
tions.
tions.
• Is the AC cord disconnected?
• Has the power been turned on?
• Make sure the
• Has the power been turned on?
• Make sure the
a (POWER) switch of the TV is set to ON.
• External influences such as lightning, static electricity, etc., may cause improper
operation. In this case, operate the unit after first turning the power off, or
unplugging the AC cord and re-plugging it in after 1 or 2 minutes.
unplugging the AC cord and re-plugging it in after 1 or 2 minutes.
• Are batteries inserted with polarity (e, f) aligned?
• Are batteries worn out? (Replace with new batteries.)
• Are you using it under strong or fluorescent lighting?
• Is a fluorescent light illuminated to remote control sensor?
• Are batteries worn out? (Replace with new batteries.)
• Are you using it under strong or fluorescent lighting?
• Is a fluorescent light illuminated to remote control sensor?
• Adjust the picture levels.
• Is the room too bright? The picture may look dark in a room that is too bright.
• Check the system setting.
• Check the input type setting.
• Is the room too bright? The picture may look dark in a room that is too bright.
• Check the system setting.
• Check the input type setting.
• The unit’s internal temperature has increased.
Remove any objects blocking vent or clean.
• Check the power control setting.
• Is connection to other components correct?
• Has input type setup been done correctly after connection?
• Is the correct input selected?
• Is a non-compatible signal being input?
• Is picture adjustment correct?
• Is the antenna connected properly?
• Has input type setup been done correctly after connection?
• Is the correct input selected?
• Is a non-compatible signal being input?
• Is picture adjustment correct?
• Is the antenna connected properly?
• Is the volume too low?
• Make sure that headphones are not connected.
• Make sure the sound is not set to Mute.
• Make sure that headphones are not connected.
• Make sure the sound is not set to Mute.
Cautions regarding use in high and low temperature environments
• When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly
delayed. This is not a malfunction, and the unit will recover when the temperature returns to normal.
• Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near
a heater, as this may cause the cabinet to deform and the LCD panel to malfunction.
Storage temperature: –20°C to +60°C (–4°F to +140°F).
Storage temperature: –20°C to +60°C (–4°F to +140°F).
Problem
Possible Solution
• No power.
• Unit cannot be operated.
• Remote control unit does not
operate.
• Strange colour, light colour, or
dark, or colour misalignment.
• Power is suddenly turned off.
• No picture.
• No sound.
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LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
1. No video output (1 / 3)
<Signals>
No video output (1)
External input in trouble <EXT-1>
External input R,G,B in trouble <EXT-1>
Is Ext 1 selected in the input switching
NO
Select Ext 1 and the input signal
Is there R,G and B at pins 5 , 2 and 12 a
t
NO
Check SC 1451 connector and
menu screen ?
in the input switching menu screen
IC1403 as specified ?
peripherical components.
YES
YES
Is there video signal input at pin 58
NO
Check SC1451 and peripherical
Is there R, G and B signal input at pins
NO
Check IC 1403, Q
1412 and
of IC 1001 ?
components
67, 68 and 69 of IC 1001 as specified ?
peripherical components
YES
YES
<Signals>
No video output (2)
External input in trouble <EXT-2>
External input in trouble <EXT-2 S-VIDEO>
Is Ext 2 selected in the input switching
NO
Select Ext 2 and the input signal
Is Ext 2 S-VIDEO selected in the input
NO
Select Ext
2 S-VIDEO and the input signal
menu screen ?
in the input switching menu screen
switching menu screen ?
in the input switching menu screen
YES
YES
NO
There are video
on screen ?
Is there video signal input at pin 64
NO
Check SC1452 and peripherical
YES
of IC 1001 ?
components
Is there chroma signal input at pin 66
NO
Check SC1452 and peripherical
YES
of IC 1001 ?
components
YES
<Signals>
No video output (3)
External input in trouble <EXT-3>
External input in trouble <EXT-3 S-VIDEO>
Is Ext 3 selected in the input switching
NO
Select Ext 3 and the input signal
Is Ext 3 S-VIDEO selected in the input
NO
Select Ext
3 S-VIDEO and the input signal
menu screen ?
in the input switching menu screen
switching menu screen ?
in the input switching menu screen
YES
YES
NO
There are video
on screen ?
Is there video signal input at pin 60
NO
Check J 401and peripherical
YES
of IC 1001 ?
components
Is there chroma signal input at pin 63
NO
Check J 403and peripherical
YES
of IC 1001 ?
components
YES
5
5
5
5
5
5
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LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
2. No video output (2 / 3)
<Main video>
Is there digital video output at pins 71, 72, 73, 74, 75, 78, 79 80 and synchro signals 81 and 82 of IC 1001 as specified
?
No
Check IC1001, IC1002, IC 1003
and peripherical components.
Yes
No
Check IC6004 and peripherical
Is there R , G, B and synchro output signals at pins 97 , 94 , 91, 34 and 35 of IC6004 as specified
?
components
Yes
Is there R , G, B output signals at pins
No
Check IC1001 and peripherical
Is there synchro out signals at pins
No
Check IC1001 and
peripherical
1,144 and 143 of IC 1001 as specified ?
components
11 and of IC 1001 as specified ?
components
Yes
Yes
Is there R , G, B input signals at pins
No
Check Q1802, Q1803 , Q1804
Is there synchro input signals at
No
Check IC 2205 and IC 18
03
2, 5 and 14 of IC 1801 as specified?
and peripherical components
pins 4 and 13 of IC 2206 as specified ?
and peripherical compone
nts
Yes
Yes
Is there R , G, B input signals at pins
No
Check IC 1801 and IC 1802
Is there synchro input signals at
No
Check IC 2206
4, 5 and 11 of IC 2203 as specified?
and peripherical components
pins 64 and 65 of IC 2201 as specified ?
and peripherical compone
nts
Yes
Is there R , G, B input signals at pins
No
Check IC 2203 and IC 1803
Yes
37, 43 and 50 of IC 2201 as specified?
and peripherical components
Yes
Is there digital output signals at pins (DEB) 66, 67, 70, 71, 73, 74, 77, 78 (DEG) 79, 80, 81, 82, 85, 86, 87, 88 (DER) 89, 90,
91, 92, 93, 94,
No
Check IC2201, IC 2210 and
97, 98 (DOB) 98, 99, 108,109,110, 111, 112, 113 (DOG) 114...121, (DOR) 124....131 and (DVS) 101, (DHS) 102, (DEN) 103 and (DCLO
K
)
106 of IC2201 as specified ?
IC2202 and peripherical components
Yes
Is there digital output signals at pins 3,4,6,7,9,10,12,13,15,16,18,19,21,22,24,25,27,28,31 and 31 of connector SC2201
No
Check
IC2207 and
as specified ?
peripherical components
Check LCD Control PWB
5
RF input in trouble <TV>
Is TV select in the input switching
No
Select TV in the input switching
menu screen ?
menu screen
Yes
Is there video signal output a
t
No
Check tuner TU 1202 and
pin 58 of IC 1001
peripherical components
Yes
No video out ( TV)
5
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LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
3. No video output (3 / 3)
<Signals>
No video output (4)
External input in trouble <EXT 4>
External input in trouble <EXT 4>
Components SD
Components HD
Select EXT 4 and the input signal
NO
Is EXT 4 selected in the input
Is EXT 4 selected in the input
No
Select EXT 4 and the input s
ignal
in the input switching menu screen
switching menu screen ?
switching menu screen ?
in the input switching menu screen
YES
YES
Select SD in main meu
ĺ
AV setup
ĺ
NO
Is SD select in Main menu?
Is HD select in Main menu?
No
Select HD in main menu
ĺ
AV setup
ĺ
Ext 4
ĺ
SD
Ext 4
ĺ
HD
YES
YES
Check Components unit PWB and
NO
Is there Y, Pr and Pb signal input at pins
Is there Y, Pr and Pb signal input at pins
No
Check C
omponents unit PWB and
peripherical components
13, 1 and 3 of IC 1403 as specified ?
13, 6 and 3 of IC 1801 as specified ?
peripherical components
YES
YES
Check IC 1403, Q 1412 and
NO
Is there Y, Pr and Pb signal input at pins
Is there Y, Pr and Pb signal output at pins
No
Check IC 18
01, IC 1802 and
peripherical components
67, 68 and 69 of IC 1001 as specified ?
12 , 4 and 7 of IC1801 as specified ?
peripherical components
YES
Is there Y, Pr and Pb signal output at pins
No
Check IC 2203 , IC 1803 and
12 , 9 and 7 of IC2203 as specified ?
peripherical components
Is there Y, Pr and Pb signal input at pins
No
Check IC 2201 and
37, 43 and 50 of IC2201 as specified ?
peripherical components
<Signals>
No video output (3)
External input in trouble <PC INPUT>
Is PC INPUT selected in the input
NO
Select PC INPUT and the input signal
switching menu screen ?
in the input switching menu screen
YES
YES
Check SC 2801 and peripherical
NO
Is there synchro signal input at
There are video on screen ?
components
pins 1 and 13 of IC 2205
NO
YES
Check IC 2205 , IC1803 and
NO
Is there synchro signal output at
Is there R,G,B signal input at pins 6.
NO
Check SC 2801 and periphe
rical
peripherical components
pins 14 and 15 of IC 2205?
10 and 13 of IC 2203 ?
components
YES
YES
Check IC 2206 and peripherical
NO
Is there synchro signal output at
components
pins 6 and 11 of IC 2206?
Is there R,G,B signal output at pins 7
N
O
Check IC 2203 , IC1803 and
YES
12 and 9 of IC 2203 ?
peripherical components
Check IC 2201 and peripherical
NO
Is there synchro signal input at
YES
components
pins 64 and 65 of IC 2201 ?
Is there R,G,B signal input at pins 37
NO
Check IC 2201 and peripherical
43 and 50 of IC 2201 ?
components
