Sharp LC-42XD1E (serv.man5) Service Manual ▷ View online
LC-42XD1E/RU
4 – 13
<When EXT2 is used for external input> No picture on the display (4)
No EXT2-Composite output of the external input system.
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-Backlight/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.
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 (41) of
SCART2 (J1101)?
sent to pin (41) of
SCART2 (J1101)?
NO
Check external connec-
tion, input setting,
SCART2 (J1101) and
peripheral circuits.
tion, input setting,
SCART2 (J1101) and
peripheral circuits.
Is Y/C signal sent to pins
(41) and (36) of SCART2
(J1101)?
(41) and (36) of SCART2
(J1101)?
NO
Check external connection,
input setting, SCART2
(J1101) and peripheral cir-
cuits.
input setting, SCART2
(J1101) and peripheral cir-
cuits.
YES
YES
Is composite video signal
(VIN2 (V)) sent to input
terminal pin (AB2) of
IC3002 (V-PRO.)?
(VIN2 (V)) sent to input
terminal pin (AB2) of
IC3002 (V-PRO.)?
NO
Check CONNECTOR
(SC2703/P1102),
SCART2 (J1101) and
peripheral circuits.
(SC2703/P1102),
SCART2 (J1101) and
peripheral circuits.
Is Y/C signal (VIN2 =Y2/
C2) sent to input terminal
pins (AB2) and (AC21) of
IC3002 (V-PRO)?
C2) sent to input terminal
pins (AB2) and (AC21) of
IC3002 (V-PRO)?
NO
Check CONNECTOR
(SC2702/P1101), SCART2
(J1101) and peripheral cir-
cuits.
(SC2702/P1101), SCART2
(J1101) and peripheral cir-
cuits.
YES
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (AB8)/(AC8) - (AB3)/(AC3) of IC3002 (V-PRO.), and
is CLK signal (CK1
±) sent to pins (AB5)/(AC5)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (AC2)/(AC1) - (V2)/(V1) of IC3002 (V-PRO.), and is
CLK signal (CK2
±) sent to pins (Y2)/(Y1)?
NO
Check pins (G14)/(U10) of
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (3)/(2) -(12)/(11) of CONNECTOR CN1 of LCD-
CONT-UNIT, and is CLK signal (CK1
±) sent to pins (10)/(9)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (17)/(16) -(26)/(25) of CONNECTOR CN1 of LCD-
CONT-UNIT, and is CLK signal (CK2
±) sent to pins (24)/(23)?
NO
Check CONNECTOR
(SC2302, CN1) and HAR-
NESS WIRE (LV).
(SC2302, CN1) and HAR-
NESS WIRE (LV).
YES
Is power (+12V) supplied to pins (1) - (5) of CONNECTOR CN2 in LCD-CONT-UNIT?
NO
Check CONNECTOR (CN2,
P707) and HARNESS
WIRE (PL).
P707) and HARNESS
WIRE (PL).
YES
Replace LCD-CONT-UNIT.
LC-42XD1E/RU
4 – 14
<When EXT3 is used for external input> No picture on the display (5)
No EXT3 output of the external input system.
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-Backlight/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.
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)?
sent to pin (1) of A/V-IN-
TERMINAL
(J1201)?
NO
Check external connec-
tion, input setting, A/V-
IN-TERMINAL (J1201)
and peripheral circuits.
tion, input setting, A/V-
IN-TERMINAL (J1201)
and peripheral circuits.
Is Y/C signal sent to pins
(11) and (7) of S-TERMI-
NAL (J1201)?
(11) and (7) of S-TERMI-
NAL (J1201)?
NO
Check external connection,
input setting, S-TERMINAL
(J1201) and peripheral cir-
cuits.
input setting, S-TERMINAL
(J1201) and peripheral cir-
cuits.
YES
YES
Is composite video signal
(IN3-CVBS) sent to input
terminal pin (4) of IC1201
(SW)?
(IN3-CVBS) sent to input
terminal pin (4) of IC1201
(SW)?
NO
Check A/V-I N-TERMI-
NAL (J1201) and periph-
eral circuits.
NAL (J1201) and periph-
eral circuits.
Is Y3 signal (IN3-Y) sent
to Input terminal pin (6) of
IC1201 (SW)?
to Input terminal pin (6) of
IC1201 (SW)?
NO
Check S-TERMINAL
(J1201) and peripheral cir-
cuits.
(J1201) and peripheral cir-
cuits.
YES
YES
Is composite video signal
(IN3 (V)) sent to input ter-
minal pin (AB20) of
IC3002 (V-PRO)?
(IN3 (V)) sent to input ter-
minal pin (AB20) of
IC3002 (V-PRO)?
NO
Check CONNECTOR
(SC2703/P1102),
IC3002 (V-PRO.) and
peripheral circuits.
(SC2703/P1102),
IC3002 (V-PRO.) and
peripheral circuits.
Is Y/C signal (IN3Y/IN3C)
sent to input terminal pins
(AB20) and (AC20) of
IC3002 (V-PRO.)?
sent to input terminal pins
(AB20) and (AC20) of
IC3002 (V-PRO.)?
NO
Check CONNECTOR
(SC2703/P1102), IC3002
(V-PRO.) and peripheral cir-
cuits.
(SC2703/P1102), IC3002
(V-PRO.) and peripheral cir-
cuits.
YES
YES
Is LVDS video signal (TA1
± -TD1±) sent to pins (AB8)/(AC8) - (AB3)/(AC3) of IC3002 (V-PRO.), and is
CLK signal (CK1
±) sent to pins (AB5)/(AC5)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (AC2)/(AC1) - (V2)/(V1) of IC3002 (V-PRO.), and is
CLK signal (CK2
±) sent to pins (Y2)/(Y1)?
NO
Check pins (G14)/(U10) of
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (3)/(2) - (12)/(11) of CONNECTOR CN1 of LCD-
CONT-UNIT, and is CLK signal (CK1
±) sent to pins (10)/(9)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (17)/(16) - (26)/(25) of CONNECTOR CN1 of LCD-
CONT-UNIT, and is CLK signal (CK2
±) sent to pins (24)/(23)?
NO
Check CONNECTOR
(SC2302, CN1) and HAR-
NESS WIRE (LV).
(SC2302, CN1) and HAR-
NESS WIRE (LV).
YES
Is power (+12V) supplied to pins (1) - (5) of CONNECTOR CN2 in LCD-CONT-UNIT?
NO
Check CONNECTOR (CN2,
P707) and HARNESS
WIRE (PL).
P707) and HARNESS
WIRE (PL).
YES
Replace LCD-CONT-UNIT.
LC-42XD1E/RU
4 – 15
<When EXT4 is used for external input> No picture on the display (6)
No EXT4 (15pin-D-SUB terminal) output of the external input sys-
tem.
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly? ... See the operation manual and 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
Is “EXT4” selected
with
button on the
remote control
NO
Select “EXT4” with
button on the
remote control.
YES
Is D-SUB-COMPONENT
signal (APC_R/G/B) sent
to pins (1), (2) and (3) of
EXT4-TERMINAL
(SC2303)?
signal (APC_R/G/B) sent
to pins (1), (2) and (3) of
EXT4-TERMINAL
(SC2303)?
NO
Check D-SUB-adaptor
and external connection.
and external connection.
YES
Is D-SUB-COMPONENT
signal (APC-R/G/B) sent
to pins (AA17), (AB17)
and (Y17) of IC3002 (V-
PRO.)?
signal (APC-R/G/B) sent
to pins (AA17), (AB17)
and (Y17) of IC3002 (V-
PRO.)?
NO
Check EXT4-TERMI-
NAL and peripheral cir-
cuits.
NAL and peripheral cir-
cuits.
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (AB8)/(AC8) - (AB3)/(AC3) of IC3002 (V-PRO.), and
is CLK signal (CK1
±) sent to pins (AB5)/(AC5)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (AC2)/(AC1) - (V2)/(V1) of IC3002 (V-PRO.), and is
CLK signal (CK2
±) sent to pins (Y2)/(Y1)?
NO
Check pins (G14)/(U10) of
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (3)/(2) -(12)/(11) of CONNECTOR CN1 of LCD-
CONT-UNIT, and is CLK signal
± - TD2±) sent to pins (17)/(16) -(26)/(25) of CONNECTOR CN1 of
LCD-CONT-UNIT, and is CLK signal (CK2
±) sent to pins (24)/(23)?
NO
Check CONNECTOR
(SC2302, CN1) and HAR-
NESS WIRE (LV).
(SC2302, CN1) and HAR-
NESS WIRE (LV).
YES
Is power (+12V) supplied to pins (1) - (5) of CONNECTOR CN2 in LCD-CONT-UNIT?
NO
Check CONNECTOR
(CN2,P707) and HAR-
NESS WIRE (PL).
(CN2,P707) and HAR-
NESS WIRE (PL).
YES
Replace LCD-CONT-UNIT.
LC-42XD1E/RU
4 – 16
<When EXT5 is used for external input> No picture on the display (7)
No EXT5 (HDMI) 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 “EXT5”.
2) Have you checked the type video signal sent from HDMI-connected external device? ... Confirm the type (it should “RGB”, “YCbCr 4:4:4” or
“YCbCr 4:2:2”).
3) Have you checked the type of Color matrix sent from HDMI-connected external device? ... Confirm the type (it should be “ITU601” or “ITU709”.)
4) Is ANT-CABLE disconnected or connected improperly? ... Connect it correctly as per the operation manual
4) Is ANT-CABLE disconnected or connected improperly? ... Connect it correctly as per the operation manual
Is “EXT5” selected with
button on the remote control?
NO
Select “EXT5” with
button on the remote control.
YES
Is the type of video signal (Signal Type) from HDMI- connected
external device set?
external device set?
NO
From MENU-Connections-HDMI setup-EXT5-Signal type, select a
signal type
(“RGB”, “YCbCr 4:4:4” or “YCbCr 4:2:2”)
signal type
(“RGB”, “YCbCr 4:4:4” or “YCbCr 4:2:2”)
YES
Is the type of color signal (Color matrix) from HDMI -connected
external device set?
external device set?
NO
From MENU-Connections-HDMI setup-EXT5-Color Matrix, select a
color signal type (“ITU601” or “ITU709”)
color signal type (“ITU601” or “ITU709”)
YES
Is TMDS signal (RX*
±signal) sent to pins (1) - (12) of
EXT5 (HDMI) terminal (SC1901)?
NO
Is I2C signal (SDA/SCL signal) sent to pins (16) and (15) of EXT5
(HDMI) terminal? Check external connection and peripheral circuits.
(HDMI) terminal? Check external connection and peripheral circuits.
YES
Is 8bit-DIGITAL signal (HDMI- R/G/B) sent from pins (110)-
(144) of IC1905 (HDMI-RECEIVER)?
(144) of IC1905 (HDMI-RECEIVER)?
NO
Check power supply (3.3/1.8V) pins (99) and (74) of IC1905,
SDA/SCL signal pins (29) and (30), and peripheral circuits.
SDA/SCL signal pins (29) and (30), and peripheral circuits.
YES
Is 8bit-DIGITAL signal (HDMI- R/G/B) sent to pins (B10) -
(D15) of IC3002 (V-PRO.)?
(D15) of IC3002 (V-PRO.)?
NO
Check SDA3/SCL3 signal pins (27) and (28), interface between
IC1905 and lC3002, and peripheral circuits.
IC1905 and lC3002, and peripheral circuits.
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (AB8)/(AC8) - (AB3)/(AC3) of IC3002 (V-PRO.), and is
CLK signal (CK1
±) sent to pins (AB5)/(AC5)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (AC2)/(AC1) - (V2)/(V1) of IC3002 (V-PRO.), and is
CLK signal (CK2
±) sent to pins (Y2)/(Y1)?
NO
Check pins (G14)/(U10) of
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
BU3.3V line of IC3002 (V-
PRO.), pins (G10)/(N17) of
BU2.5V line, pins (U16)/
(G12) of BU1.8V line and
peripheral circuits.
YES
Is LVDS video signal (TA1
± - TD1±) sent to pins (3)/(2) -(12)/(11) of CONNECTOR CN1 of LCD-CONT-
UNIT, and is CLK signal (CK1
±) sent to pins (10)/(9)?
Is LVDS video signal (TA2
± - TD2±) sent to pins (17)/(16) -(26)/(25) of CONNECTOR CN1 of LCD-
CONT-UNIT, and is CLK signal (CK2
±) sent to pins (24)/(23)?
NO
Check CONNECTOR
(SC2302, CN1) and HAR-
NESS WIRE (LV).
(SC2302, CN1) and HAR-
NESS WIRE (LV).
YES
Is power (+12V) supplied to pins (1) - (5) of CONNECTOR CN2 in LCD-CONT-UNIT?
NO
Check CONNECTOR
(CN2,P707) and HARNESS
WIRE (PL).
(CN2,P707) and HARNESS
WIRE (PL).
YES
Replace LCD-CONT-UNIT.
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