Sharp LC-37SD1E Service Manual page 63

<When EXT5 is used for external input>
No EXT5 (HDMI) output of the external input system.
Checklist:
1) Is "INPUT SOURCE" button
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
remote control?
Is the type of video signal (Signal Type) from HDMI-connected
external device set?
Is the type of color signal (Color Matrix) from HDMI-connected
external device set?
Is TMDS data (RX*±signal) sent to pins (1) - (12) of EXT5 (HDMI)
terminal (SC1901)?
Is 8bit-DIGITAL signal (HDMI- R/G/B) sent from pins (110) - (144)
of IC1905 (HDMI-RECEIVER)?
Is 8bit-DIGITAL signal (HDMI- R/G/B) sent to pins (73) - (50) of
IC3002 (VCT)?
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)?
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (13) and (12) -
(25) and (24) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (22) and (21)?
Is power (LCD5V) supplied to pins (1) - (4) of CONNECTOR CN1
in LCD-CONT-UNIT?
Replace LCD-CONT-UNIT.
No picture on the display (7)
on the remote control set up correctly? ••• See the operation manual and set "INPUT SOURCE" to "EXT5".
YES
on the
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
Select "EXT5" with "INPUT SOURCE" button
control.
NO From MENU-Option-HDMI Setup-Signal Type, select a signal
type ("RGB", "YCbCr 4:4:4" or "YCbCr 4:2:2").
NO From Option-HDMI Setup-Color Matrix, select a color signal type
("AUTO", "ITU601" or "ITU709")
NO Is I2C signal (SDA/SCL signal) sent to pins (16) and (15) of
EXT5 (HDMI) terminal?
Check external connection and peripheral circuits.
NO Check power supply (3.3/1.8V) pins (99) and (74) of IC1905,
SDA/SCL signal pins (29) and (30), and peripheral circuits.
NO Check SDA3/SCL3 signal pins (27) and (28), interface between
IC1905 and lC3002, and peripheral circuits.
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.
NO Check CONNECTOR (P2305,CN1) and HARNESS WIRE (LV).
NO Is LCD5V supplied to pins (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
4 – 23
LC-37SA1E/RU
on the remote