Sharp LC-32SA1E (serv.man2) Service Manual ▷ View online
LC-26SA1E/RU, LC-32SA1E/RU
6 – 17
<When EXT2 is used for external input> No picture on the display (4)
No EXT2-Y/C output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXT2”.
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to “MIN”?
••• Set it to an appropriate level.
3) Check the connection to the external device
••• Connect it correctly as per the operation manual for the device.
Is Y/C signal sent to pins (41) and (36) of SCART2 (J1101)?
NO
Check external connection, input setting, SCART2 (J1101) and
peripheral circuits.
peripheral circuits.
YES
Is Y/C signal (VIN1 =Y2/C2) sent to input terminal pins (190) and
(178) of IC3002 (VCT)?
(178) of IC3002 (VCT)?
NO
Check CONNECTOR (SC2702/P1101), SCART2 (J1101) and
peripheral circuits.
peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
NO
Check pins (192), (170) and (133) of BU 3.3V power line and
pins (185), (169) and (142) of BU1.8V power line of IC3002
(VCTP), and peripheral circuits.
pins (185), (169) and (142) of BU1.8V power line of IC3002
(VCTP), and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) -
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
NO
Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).
YES
Is power (LCD5V) supplied to pins (2) - (5) of CONNECTOR CN1
in LCD-CONT-UNIT?
in LCD-CONT-UNIT?
NO
Is LCD5V supplied to pins (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
Check HARNESS WIRE (LV).
YES
Replace LCD-CONT-UNIT.
LC-26SA1E/RU, LC-32SA1E/RU
6 – 18
<When EXT3 is used for external input> No picture on the display (5)
No EXT3 output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXT3”.
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to “MIN”?
••• Set it to an appropriate level.
3) Check the connection to the external device
••• Connect it correctly as per the operation manual for the device.
Is composite video signal sent to pin (1) of A/V-IN-TERMINAL
(J1201)?
NO
Check external connection, input setting, A/V-IN-TERMINAL
(J1201) and peripheral circuits.
(J1201) and peripheral circuits.
YES
Is composite video signal (IN3-CVBS) sent to input terminal pin
(4) of IC1201 (SW)?
(4) of IC1201 (SW)?
NO
Check A/V-I N-TERMINAL (J1201) and peripheral circuits.
YES
Is composite video signal (CVBS=VIN7) sent to input terminal pin
(184) of IC3002 (VCT)?
(184) of IC3002 (VCT)?
NO
Check CONNECTOR (SC2703/P1102), IC3002 (VCT) and
peripheral circuits.
peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
NO
Check pins (192), (170) and (133) of BU3.3V power line and pins
(185), (169) and (142) of BU1.8V power line of IC3002 (VCTP),
and peripheral circuits.
(185), (169) and (142) of BU1.8V power line of IC3002 (VCTP),
and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) -
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
NO
Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).
YES
Is power (LCD5V) supplied to pins (2) - (5) of CONNECTOR CN1
in LCD-CONT-UNIT?
in LCD-CONT-UNIT?
NO
Is LCD5V supplied to pin (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
Check HARNESS WIRE (LV).
YES
Replace LCD-CONT-UNIT.
LC-26SA1E/RU, LC-32SA1E/RU
6 – 19
<When EXT3 is used for external input> No picture on the display (5)
No EXT3-Y/C output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXT3”.
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to “MIN”?
••• Set it to an appropriate level.
3) Check the connection to the external device
••• Connect it correctly as per the operation manual for the device.
Is Y/C signal sent to pins (11) and (7) of S-TERMINAL (J1201)?
NO
Check external connection, input setting, S-TERMINAL (J1201)
and peripheral circuits.
and peripheral circuits.
YES
Is Y3 signal (IN3-Y) sent to Input terminal pin (6) of IC1201
(SW)?
(SW)?
NO
Check S-TERMINAL (J1201) and peripheral circuits.
YES
Is Y/C signal (VIN7/VIN8) sent to input terminal pins (184) and
(183) of IC3002 (VCT)?
(183) of IC3002 (VCT)?
NO
Check CONNECTOR (SC2703/P1102), IC3002 (VCT) and
peripheral circuits.
peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
NO
Check pins (192), (170) and (133) of BU3.3V power line and pins
(185), (169) and (142) of BU1.8V power line of IC3002 (VCTP),
and peripheral circuits.
(185), (169) and (142) of BU1.8V power line of IC3002 (VCTP),
and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) -
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
NO
Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).
YES
Is power (LCD5V) supplied to pins (2) - (5) of CONNECTOR CN1
in LCD-CONT-UNIT?
in LCD-CONT-UNIT?
NO
Is LCD5V supplied to pin (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
Check HARNESS WIRE (LV).
YES
Replace LCD-CONT-UNIT.
LC-26SA1E/RU, LC-32SA1E/RU
6 – 20
<When EXT4 is used for external input> No picture on the display (6)
No EXT4 (15pin-D-SUB terminal) output of the external input
system.
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual set “INPUT SOURCE” to “EXT4”.
2) Connect the included D-SUB-Adapter-Cable to the COMPONENT terminal of an external device.
••• See the operation manual (use a commer-
cially available Component-Cable to connect to the external device).
3) Is ANT-CABLE disconnected or connected improperly?
••• Connect it correctly as per the operation manual.
YES
Is “EXT4” selected with “INPUT SOURCE” button
on the
remote control?
NO
Select “EXT4” with “INPUT SOURCE” button
on the remote
control.
YES
Is D-SUB-COMPONENT signal (PCV_R/G/B) sent to pins (1), (2)
and (3) of EXT4-TERMINAL (SC2303)?
and (3) of EXT4-TERMINAL (SC2303)?
NO
Check D-SUB-adaptor and external connection.
YES
Is D-SUB-COMPONENT signal (PCV_R/G/B=VIN19/20/21) sent
to pins (174), (173) and (172) of IC3002 (VCT)?
to pins (174), (173) and (172) of IC3002 (VCT)?
NO
Check EXT4-TERMINAL and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
NO
Check pins (192), (170) and (133) of BU3.3V power line and
pins (185), (169) and (142) of BU1.8V power line of IC3002
(VCTP), and peripheral circuits.
pins (185), (169) and (142) of BU1.8V power line of IC3002
(VCTP), and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) -
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
NO
Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).
YES
Is power (LCD5V) supplied to pins (2) - (5) of CONNECTOR CN1
in LCD-CONT-UNIT?
in LCD-CONT-UNIT?
NO
Is LCD5V supplied to pins (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
Check HARNESS WIRE (LV).
YES
Replace LCD-CONT-UNIT.
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