Sharp LC-32RD2E (serv.man5) Service Manual ▷ View online
LC-32RD2E/RU, LC-37RD2E/RU
4 – 13
<When EXT3 is used for external input> No picture on the display (9)
No EXT3 output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXIT3”.
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 from pins (2) of
IC1201 (SW)?
IC1201 (SW)?
NO
Check IC1201 and peripheral circuits.
YES
Is composite video signal (IN3-CVBS) sent to input terminal pin
(3) of IC2801 (SW)?
(3) of IC2801 (SW)?
NO
Check CONNECTOR (P1102/SC2802), and peripheral circuits.
YES
Is composite video signal (IN3-CVBS=VIN7) sent to input termi-
nal pin (184) of IC3001 (VCT)?
nal pin (184) of IC3001 (VCT)?
NO
Check IC2801 (SW) and peripheral circuits.
YES
Refer to “No video output in all modes”.
<When EXT3 is used for external input> No picture on the display (10)
No EXT3-Y/C output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXIT3”.
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 from pin (2) of IC1201 (SW)?
NO
Check IC1201 and peripheral circuits.
YES
Is Y3 signal (IN3-Y) sent to input terminal pin (3) of IC2801 (SW)?
NO
Check CONNECTOR (P1102/SC2802), and peripheral circuits.
YES
Is Y/C signal (VIN7/VIN8) sent to input terminal pins (184) and
(183) of IC3001 (VCT)?
(183) of IC3001 (VCT)?
NO
Check IC2801 (SW) and peripheral circuits.
YES
Refer to “No video output in all modes”.
LC-32RD2E/RU, LC-37RD2E/RU
4 – 14
<When EXT4 is used for external input> No picture on the display (11)
No EXT4 (15pin-D-SUB terminal) output of the external input sys-
tem.
Checklist:
1) Is “INPUT SOURCE” button
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXIT4”.
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 “EXT4” selected with “INPUT SOURCE” button on the remote
control?
NO
Select “EXT4” with “INPUT SOURCE” button on the remote con-
trol.
trol.
YES
Is D-SUB-COMPONENT signal (PCV_R/G/B) sent to pins (1), (2)
and (3) of EXT4-TERMINAL (SC2321)?
and (3) of EXT4-TERMINAL (SC2321)?
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
IC3001 (VCT)?
(PCV_R/G/B=VIN19/20/21) sent to pins (174), (173) and (172) of
IC3001 (VCT)?
NO
Check EXT4-TERMINAL and peripheral circuits.
YES
Refer to “No video output in all modes”.
LC-32RD2E/RU, LC-37RD2E/RU
4 – 15
<When EXT5 is used for external input> No picture on the display (12)
No EXT5 (HDMI) output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
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.
Is “EXT5” selected with “INPUT SOURCE” button on the remote
control?
NO
Select “EXT5” with “INPUT SOURCE” button on the remote con-
trol.
trol.
YES
Is the type of video signal (Signal Type) from HDMI-connected
external device set?
external device set?
NO
From MENU-Option-HDMI Setup-Signal Type, select a signal
type (“RGB”, “YCbCr 4:4:4” or “YCbCr 4:2:2”).
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 Option-HDMI Setup-Color Matrix, select a color signal type
(“ITU601” or “ITU709”)
(“ITU601” or “ITU709”)
YES
Is TMDS data (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.
EXT5 (HDMI) terminal?
Check external connection and peripheral circuits.
YES
Is 8bit-DIGITAL signal (HDMI- R/G/B) sent from pins (110) - (144)
of IC1951 (HDMI-RECEIVER)?
of IC1951 (HDMI-RECEIVER)?
NO
Check power supply (3.3/1.8V) pins (99) and (74) of IC1951,
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 (73) - (50) of
IC3001 (VCT)?
IC3001 (VCT)?
NO
Check SDA3/SCL3 signal pins (27) and (28), interface between
IC1951 and lC3001, and peripheral circuits.
IC1951 and lC3001, and peripheral circuits.
YES
Refer to “No video output in all modes”.
LC-32RD2E/RU, LC-37RD2E/RU
4 – 16
<When EXT6 is used for external input> No picture on the display (13)
No EXT6 (HDMI) output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button
1) Is “INPUT SOURCE” button
on the remote control set up correctly?
••• See the operation manual and set “INPUT SOURCE” to “EXT6”.
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.
Is “EXT6” selected with “INPUT SOURCE” button on the
remote control?
NO
Select “EXT6” with “INPUT SOURCE” button on the remote con-
trol.
trol.
YES
Is the type of video signal (Signal Type) from HDMI-connected
external device set?
external device set?
NO
From MENU-Option-HDMI Setup-Signal Type, select a signal
type (“RGB”, “YCbCr 4:4:4” or “YCbCr 4:2:2”).
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 Option-HDMI Setup-Color Matrix, select a color signal type
(“AUTO”, “ITU601” or “ITU709”)
(“AUTO”, “ITU601” or “ITU709”)
YES
Is TMDS data (RX*
±signal) sent to pins (1) - (12) of EXT6 (HDMI)
terminal (SC1902)?
NO
Is I2C signal (SDA/SCL signal) sent to pins (16) and (15) of
EXT6 (HDMI) terminal?
Check external connection and peripheral circuits.
EXT6 (HDMI) terminal?
Check external connection and peripheral circuits.
YES
Is 8bit-DIGITAL signal (HDMI- R/G/B) sent from pins (110) - (144)
of IC1951 (HDMI-RECEIVER)?
of IC1951 (HDMI-RECEIVER)?
NO
Check power supply (3.3/1.8V) pins (99) and (74) of IC1951,
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 (73) - (50) of
IC3001 (VCT)?
IC3001 (VCT)?
NO
Check SDA3/SCL3 signal pins (27) and (28), interface between
IC1951 and lC3001, and peripheral circuits.
IC1951 and lC3001, and peripheral circuits.
YES
Refer to “No video output in all modes”.
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