Sharp LC-32GA6E (serv.man2) Service Manual ▷ View online
49
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA6E
LC-32GA6E
LC-37GA6E
<On input of the tuner (U/V)>
No picture (1)
No picture appears on the reception of the tuner (U/V)
Confirmation of the settings:
1) Is "INPUT MODE" of remote control set properly?.... Set "INPUT MODE" to TV referring to the operation manual.
2) Is MENU-PICTURE-LEVELS-CONTRAST/BRIGHTNESS set to "MIN"?... Set to the desired level.
3) Is ANT-CABLE disconnected or is there a connector error?....Connect according to the operation manual.
YES
Is video signal (IF) sent from the pin
NO
Check the tuner (TU1201) and its
(11) of TUNER(TU1201)?
peripheral circuit
YES
Are video signals sent from the pins
NO
Check the SF1201 and its peripheral
(4) and (5) of SF1201 (SAW FIL) ?
circuits
YES
Are video signals (IF± ) supplier to
NO
Check SF1201 to the pins (109) (110) of
the pins (109)(110) IC1001 (VCTI)?
IC1001 (VCTI) and peripheral circuits
YES
NO
Are digital video output (ITU 656 71 ~ 80) and synchro signals (81, 82) of IC 1001?
Check IC1001, IC1002, IC 1003 and periph
eral components.
YES
NO
Are R,G,B and synchro output signals at pins (97, 94,91, 34 and 35 ) as specified?
Check IC6004and peripheral components
YES
YES
Are R,G,B output signals at pins
NO
Check IC1001 and peripheral
Are synchro signal at pins (34)
NO
Check IC1001, IC 6004 and
(1) (144) and (143) of IC1001 as specified?
components
(35 ) of IC 6004 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1802, Q1803, Q1804
Are synchro input signals at pins
NO
Check IC 2205 and IC 1803 and
(2) (5) (14) of IC1801 as specified?
and peripheral components
(4) (13) of IC 2206 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check IC1801, IC1802
Are synchro input signals at pins
NO
Check IC 2206 and peripheral
(14) (5) (11) of IC 2203 as specifeid?
and peripheral components
(64) (65) of IC 2201 as specified?
components
YES
Are R,G,B input signals at pins
NO
Check IC2203 and IC1803
(37) (43) (50) of IC2201 as specified?
and peripheral components
YES
YES
Are video digital output signals at pins (DEB 66 ~ 78) ( DEG 79 ~ 88) ( DER 89 ~ 98) (DOB 98 ~ 113) (DOG 114 ~ 121) (DOR 124 ~
131)
NO
Check IC 2201, IC 2210 and
and (DVS 101) (DHS 102) (DEN 103) (DCLOK 106) of IC2201 as specified?
peripheral components
YES
Are digital video signals (TA1± ~ TD1± ) sent to the pins (3) ~ (16) of LV connector (SC2201) on MAIN PWB?
NO
Check IC 2207 and peripheral
Are digital video signals (TA2 ± ~ TD2 ± ) sent to the pins (18) ~ (31) of LV connector (SC2201) ?
components
YES
Check the LCD CONTROLLER Unit
Troubleshooting Table (continued)
50
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA6E
LC-32GA6E
LC-37GA6E
LC-32GA6E
LC-37GA6E
< When external connected >
No picture (2)
External input in trouble <EXT-1>
External input R,G,B in trouble <EXT-1>
YES
YES
Confirmation of the settings:
1) Is "INPUT MODE" of remote control set properly?.... Set "INPUT MODE" to EXT.1 referring to the operation manual.
2) Is MENU-PICTURE-LEVELS-CONTRAST/BRIGHTNESS set to "MIN"?... Set to the desired level.
YES
YES
Is video signal sent to the pin (19) of
NO
Check the connection with external
Is there R,G and B at pins 5 , 2 and 12 a
t
NO
Check SC 1451 connector and
scart 1?
equipment or input setting
IC1403 as specified ?
peripherical components.
YES
YES
Is there video signal input at pin (66)
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
NO
Are digital video output (ITU 656 71 ~ 80) and synchro signals (81, 82) of IC 1001?
Check IC1001, IC1002, IC 1003 and periph
eral components.
YES
NO
Are R,G,B and synchro output signals at pins (97, 94,91, 34 and 35 ) as specified?
Check IC6004and peripheral components
YES
YES
Are R,G,B output signals at pins
NO
Check IC1001 and peripheral
Are synchro signal at pins (34)
NO
Check IC1001, IC 6004 and
(1) (144) and (143) of IC1001 as specified?
components
(35 ) of IC 6004 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1802, Q1803, Q1804
Are synchro input signals at pins
NO
Check IC 2205 and IC 1803 and
(2) (5) (14) of IC1801 as specified?
and peripheral components
(4) (13) of IC 2206 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1801, Q1802
Are synchro input signals at pins
NO
Check IC 2206 and peripheral
(4) (5) (11) of IC 2203 as specified?
and peripheral components
(64) (65) of IC 2201 as specified?
components
YES
Are R,G,B input signals at pins
NO
Check IC2203 and IC1803
(37) (43) (50) of IC2201 as specified?
and peripheral components
YES
YES
Are video digital output signals at pins (DEB 66 ~ 78) ( DEG 79 ~ 88) ( DER 89 ~ 98) (DOB 98 ~ 113) (DOG 114 ~ 121) (DOR 124 ~
131)
NO
Check IC 2201, IC 2210 and
and (DVS 101) (DHS 102) (DEN 103) (DCLOK 106) of IC2201 as specified?
peripheral components
YES
Are digital video signals (TA1± ~ TD1± ) sent to the pins (3) ~ (16) of LV connector (SC2201) on MAIN PWB?
NO
Check IC 2207 and peripheral
Are digital video signals (TA2 ± ~ TD2 ± ) sent to the pins (18) ~ (31) of LV connector (SC2201) ?
components
YES
Check the LCD CONTROLLER Unit
Troubleshooting Table (continued)
51
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA6E
LC-32GA6E
LC-37GA6E
< When external connected >
No picture (3)
External input in trouble <EXT-2>
External input S-VIDEO in trouble <EXT-2>
YES
YES
Confirmation of the settings:
1) Is "INPUT MODE" of remote control set properly?.... Set "INPUT MODE" to EXT.2 or S-VIDEO referring to the operation manual.
2) Is MENU-PICTURE-LEVELS-CONTRAST/BRIGHTNESS set to "MIN"?... Set to the desired level.
YES
YES
Is video signal sent to the pin (19) of
NO
Check the connection with external
scart 2?
equipment or input setting
NO
Is there luminance
on screen ?
YES
YES
Is there video signal input at pin (64)
NO
Check SC1452 and peripherical
Is chroma signal input
NO
Check SC 1452 and
of IC 1001 ?
components
at pin (65) of IC 1001?
peripherical components
YES
YES
NO
Are digital video output (ITU 656 71 ~ 80) and synchro signals (81, 82) of IC 1001?
Check IC1001, IC1002, IC 1003 and periph
eral components.
YES
NO
Are R,G,B and synchro output signals at pins (97, 94,91, 34 and 35 ) as specified?
Check IC6004and peripheral components
YES
YES
Are R,G,B output signals at pins (1)
NO
Check IC1001 and peripheral
Are synchro signal at pins (34)
NO
Check IC1001, IC 6004 and
(144) and (143) of IC1001 as specified?
components
(35 ) of IC 6004 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1802, Q1803, Q1804
Are synchro input signals at pins
NO
Check IC 2205 and IC 1803 and
(2) (5) (14) of IC1801 as specified?
and peripheral components
(4) (13) of IC 2206 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1801, Q1802
Are synchro input signals at pins
NO
Check IC 2206 and peripheral
(4) (5) (11) of IC 2203 as specified?
and peripheral components
(64) (65) of IC 2201 as specified?
components
YES
Are R,G,B input signals at pins
NO
Check IC2203 and IC1803
(37) (43) (50) of IC2201 as specified?
and peripheral components
YES
YES
Are video digital output signals at pins (DEB 66 ~ 78) ( DEG 79 ~ 88) ( DER 89 ~ 98) (DOB 98 ~ 113) (DOG 114 ~ 121) (DOR 124 ~
131)
NO
Check IC 2201, IC 2210 and
and (DVS 101) (DHS 102) (DEN 103) (DCLOK 106) of IC2201 as specified?
peripheral components
YES
Are digital video signals (TA1± ~ TD1± ) sent to the pins (3) ~ (16) of LV connector (SC2201) on MAIN PWB?
NO
Check IC 2207 and peripheral
Are digital video signals (TA2 ± ~ TD2 ± ) sent to the pins (18) ~ (31) of LV connector (SC2201) ?
components
YES
Check the LCD CONTROLLER Unit
Troubleshooting Table (continued)
52
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA6E
LC-32GA6E
LC-37GA6E
LC-32GA6E
LC-37GA6E
< When external connected >
No picture (4)
External input in trouble <EXT-3>
External input S-VIDEO in trouble <EXT-3>
YES
YES
Confirmation of the settings:
1) Is "INPUT MODE" of remote control set properly?.... Set "INPUT MODE" to EXT.3 or S-VIDEO referring to the operation manual.
2) Is MENU-PICTURE-LEVELS-CONTRAST/BRIGHTNESS set to "MIN"?... Set to the desired level.
YES
YES
Is video signal sent to the pin (19) of
NO
Check the connection with external
video 3?
equipment or input setting
NO
Is there luminance
on screen ?
YES
YES
Is there video signal input at pin (60)
NO
Check J 401 and peripherical
Is chroma signal input
NO
Check J 403 and
of IC 1001 ?
components
at pin (63) of IC 1001?
peripherical components
YES
YES
NO
Are digital video output (ITU 656 71 ~ 80) and synchro signals (81, 82) of IC 1001?
Check IC1001, IC1002, IC 1003 and peripheral components.
YES
NO
Are R,G,B and synchro output signals at pins (97, 94,91, 34 and 35 ) as specified?
Check IC6004and peripheral components
YES
YES
Are R,G,B output signals at pins
NO
Check IC1001 and peripheral
Are synchro signal at pins (34)
NO
Check IC1001, IC 6004 and
(1) (144) and (143) of IC1001 as specified?
components
(35 ) of IC 6004 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1802, Q1803, Q1804
Are synchro input signals at pins
NO
Check IC 2205 and IC 1803 and
(2) (5) (14) of IC1801 as specified?
and peripheral components
(4) (13) of IC 2206 as specified?
peripheral components
YES
YES
Are R,G,B input signals at pins
NO
Check Q1801, Q1802
Are synchro input signals at pins
NO
Check IC 2206 and peripheral
(4) (5) (11) of IC 2203 as specified?
and peripheral components
(64) (65) of IC 2201 as specified?
components
YES
Are R,G,B input signals at pins
NO
Check IC2203 and IC1803
(37) (43) (50) of IC2201 as specified?
and peripheral components
YES
YES
Are video digital output signals at pins (DEB 66 ~ 78) ( DEG 79 ~ 88) ( DER 89 ~ 98) (DOB 98 ~ 113) (DOG 114 ~ 121) (DOR 124 ~
131)
NO
Check IC 2201, IC 2210 and
and (DVS 101) (DHS 102) (DEN 103) (DCLOK 106) of IC2201 as specified?
peripheral components
YES
Are digital video signals (TA1± ~ TD1± ) sent to the pins (3) ~ (16) of LV connector (SC2201) on MAIN PWB?
NO
Check IC 2207 and peripheral
Are digital video signals (TA2 ± ~ TD2 ± ) sent to the pins (18) ~ (31) of LV connector (SC2201) ?
components
YES
Check the LCD CONTROLLER Unit
Troubleshooting Table (continued)
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