Sharp LC-46X8E (serv.man8) Service Manual / Parts Guide ▷ View online
LC-46X8E/S/RU
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<During external connection> No picture on the monitor (3)
SCART2:
No picture from EXT1 appears on EXT2-connected monitor.
No picture from EXT1 appears on EXT2-connected monitor.
NOTE: Normally, if the screen during display is sent to EXT2, no picture is sent to EXT2.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device?
⋅ ⋅ ⋅ Set it to “CVBS”, “Y/C” or “RGB”.
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of EXT1-3.
When sent by component, etc., that signal is not sent to the monitor.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
4) The video output from EXT1 is not the monitor output (output of the picture now watching).
4) The video output from EXT1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to EXT1. (Specification)
TERMINAL UNIT:
Is CVBS signal output from pin (51) of IC506 to pin (19) of
SCART2 (SC503)?
Is CVBS signal output from pin (51) of IC506 to pin (19) of
SCART2 (SC503)?
YES
Check the setting of an external input device that connects of
SC503.
SC503.
NO
Is CVBS signal (VIN1) sent to pin (65) of IC506
(VIDEO_SELECTOR)?
(VIDEO_SELECTOR)?
YES
Check the IC506 and its peripheral circuits.
NO
Is CVBS signal (VIN1) sent to pin (20) of SCART1 (SC502)?
YES
Check the line between SC502 and IC506.
NO
Check the setting of an external input device that connects of
SC502.
SC502.
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<During external connection> No picture on the monitor (4)
SCART2:
No picture from EXT3 appears on EXT2- connected monitor.
No picture from EXT3 appears on EXT2- connected monitor.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device?
⋅ ⋅ ⋅ Set it to “CVBS”, “Y/C” or “RGB”.
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of EXT1-3.
When sent by component, etc., that signal is not sent to the monitor.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
4) The video output from EXT1 is not the monitor output (output of the picture now watching).
4) The video output from EXT1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to EXT1. (Specification)
TERMINAL UNIT:
Is CVBS signal output from pin (51) of IC506 to pin (19) of
SCART2 (SC503)?
Is CVBS signal output from pin (51) of IC506 to pin (19) of
SCART2 (SC503)?
YES
Check the setting of an external input device that connects of
SC503.
SC503.
NO
Is CVBS signal input from pin (5) of the connector P501 to pin (3)
of IC506 (VIDEO SELECTOR)?
of IC506 (VIDEO SELECTOR)?
YES
Check the IC506 and its peripheral circuits.
MINI AV UNIT:
NO
Is CVBS signal input from pin (6) of the EXT3 terminal (J901) to
pin (5) of the connector (P501)?
pin (5) of the connector (P501)?
YES
Check the connector (P501/P901)
NO
Is V3_PLUG signal of the CVBS signal detection function from
pin (7) of the EXT3 terminal (J901) normal?
(When connecting terminal: 7V, When opening: 0V)
pin (7) of the EXT3 terminal (J901) normal?
(When connecting terminal: 7V, When opening: 0V)
YES
Check the setting of an external input device that connects of
J901.
J901.
NO
Check between V3_PLUG_LINE J901 and pin (2) of IC506 in the
TERMINAL UNIT. (Connector P901/P501, etc.)
TERMINAL UNIT. (Connector P901/P501, etc.)
LED flashing patterns for error notification
1) Power red LED
Remarks
Error type
Power red LED operation (1 cycle)
Description
Lamp failure
Flashes once: Fast
Flashes once: Fast
H: On
L: Off
ERR_PNL (IC2002_43pin): Abnormal L. Confirmed after 5
consecutive detections at 1 second intervals (detected only
when the backlight is on).
Note that after five detection counts, the lamp cannot be acti-
vated except in the monitoring process. (For the first time,
only the inverter is reset, and error OFF is not activated)
Accumulated counts are cleared to 0 when the correspond-
ing setting in the process A is made, when the power is
turned on with [CH_DOWN] and [VOL_UP] on the unit down
or after continuous illumination for 3 minutes.
consecutive detections at 1 second intervals (detected only
when the backlight is on).
Note that after five detection counts, the lamp cannot be acti-
vated except in the monitoring process. (For the first time,
only the inverter is reset, and error OFF is not activated)
Accumulated counts are cleared to 0 when the correspond-
ing setting in the process A is made, when the power is
turned on with [CH_DOWN] and [VOL_UP] on the unit down
or after continuous illumination for 3 minutes.
Power failure
Flashes twice
Flashes twice
H: On
L: Off
Refer to “Power failure details”.
Communication failure
with main CPU
Flashes 3 times
with main CPU
Flashes 3 times
H: On
L: Off
Refer to “Communication failure details”.
Communication line failure or main CPU (IC8101) communi-
cation
failure.
Communication line failure or main CPU (IC8101) communi-
cation
failure.
→ Check main CPU (IC8101).
Monitor temp. failure
Flashes 5 times
Flashes 5 times
H: On
L: Off
If the panel temperature is 60
°C or more for 15 seconds or
more in a row, CAUTION appears on the OSD of AVC
(flashes in red in the lower right screen).
If the panel temperature is 60
(flashes in red in the lower right screen).
If the panel temperature is 60
°C or more for 28 seconds or
more in a row, error standby is activated.
(MONITOR MAX TEMP of process adjustment (28/31):
Change of temperature failure AD value): Thermistor
(MONITOR MAX TEMP of process adjustment (28/31):
Change of temperature failure AD value): Thermistor
250ms
1sec
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2) Power failure details (Power LED flashes twice and OPC LED flashes)
Remarks
Error type
OPC LED operation (1 cycle)
Description
PS_ON
12V failure
Flashes once
12V failure
Flashes once
H: On
L: Off
AC_DET (IC2002_16pin): Abnormal (L). Main converter 12V
is not applied.
If error is detected during operation, the power is turned on
again by interrupt handling (instantaneous blackout process-
ing, no error flashing).
is not applied.
If error is detected during operation, the power is turned on
again by interrupt handling (instantaneous blackout process-
ing, no error flashing).
PS_ON
10V failure
Flashes 3 times
10V failure
Flashes 3 times
H: On
L: Off
DET_10V (IC2002_57pin): Abnormal (L). Main power
UR15V is not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
UR15V is not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
D_POW
Digital 3.3V failure
Flashes 4 times
Digital 3.3V failure
Flashes 4 times
H: On
L: Off
DET_D3V3 (IC2002_59pin): Abnormal (L). D3.3V is not
applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
PANEL_POW
Panel 5V failure
Flashes 5 times
Panel 5V failure
Flashes 5 times
H: On
L: Off
DET_PNL5V (IC2002_58pin): Abnormal (L). Panel power is
not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
Main failure
Flashes 7 times
Flashes 7 times
H: On
L: Off
Main microprocessor detection error
The details are displayed on page 1 of process adjustment
for the main microprocessor (IC8101).
The details are displayed on page 1 of process adjustment
for the main microprocessor (IC8101).
3) Communication failure details (Power LED flashes 3 times and OPC LED flashes) Remarks
Error type
OPC LED operation (1 cycle)
Description
Initial communication
reception failure
Flashes once
reception failure
Flashes once
H: On
L: Off
Initial communication from the main CPU (IC8101) is not
received.
→ Communication line failure or main CPU (IC8101) start-up
failure
received.
→ Communication line failure or main CPU (IC8101) start-up
failure
Start-up confirmation
reception failure
Flashes twice
reception failure
Flashes twice
H: On
L: Off
Start-up reason confirmation from the main CPU (IC8101) is
not received.
→ Main CPU (IC8101) start-up failure or monitor micropro-
cessor (IC2002) reception failure
not received.
→ Main CPU (IC8101) start-up failure or monitor micropro-
cessor (IC2002) reception failure
Regular communication
failure
Flashes 3 times
failure
Flashes 3 times
H: On
L: Off
Regular communication that is performed at 1 second inter-
vals in the normal operation is interrupted.
→ Main CPU (IC8101) operation failure or monitor micropro-
cessor (IC2002) reception failure
vals in the normal operation is interrupted.
→ Main CPU (IC8101) operation failure or monitor micropro-
cessor (IC2002) reception failure
Restart failure
Flashes 4 times
Flashes 4 times
H: On
L: Off
When restarted by a software with the standby off/on, restart
completion notification is not received.
→ Main CPU (IC8101)restart failure to monitor microproces-
sor (IC2002) reception failure
completion notification is not received.
→ Main CPU (IC8101)restart failure to monitor microproces-
sor (IC2002) reception failure
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2) Power failure details (Power LED flashes twice and OPC LED flashes)
Remarks
Error type
OPC LED operation (1 cycle)
Description
PS_ON
12V failure
Flashes once
12V failure
Flashes once
H: On
L: Off
AC_DET (IC2002_16pin): Abnormal (L). Main converter 12V
is not applied.
If error is detected during operation, the power is turned on
again by interrupt handling (instantaneous blackout process-
ing, no error flashing).
is not applied.
If error is detected during operation, the power is turned on
again by interrupt handling (instantaneous blackout process-
ing, no error flashing).
PS_ON
10V failure
Flashes 3 times
10V failure
Flashes 3 times
H: On
L: Off
DET_10V (IC2002_57pin): Abnormal (L). Main power
UR15V is not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
UR15V is not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
D_POW
Digital 3.3V failure
Flashes 4 times
Digital 3.3V failure
Flashes 4 times
H: On
L: Off
DET_D3V3 (IC2002_59pin): Abnormal (L). D3.3V is not
applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
PANEL_POW
Panel 5V failure
Flashes 5 times
Panel 5V failure
Flashes 5 times
H: On
L: Off
DET_PNL5V (IC2002_58pin): Abnormal (L). Panel power is
not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
not applied.
If error is detected during start-up or operation, the power is
turned on again by polling.
Main failure
Flashes 7 times
Flashes 7 times
H: On
L: Off
Main microprocessor detection error
The details are displayed on page 1 of process adjustment
for the main microprocessor (IC8101).
The details are displayed on page 1 of process adjustment
for the main microprocessor (IC8101).
3) Communication failure details (Power LED flashes 3 times and OPC LED flashes) Remarks
Error type
OPC LED operation (1 cycle)
Description
Initial communication
reception failure
Flashes once
reception failure
Flashes once
H: On
L: Off
Initial communication from the main CPU (IC8101) is not
received.
→ Communication line failure or main CPU (IC8101) start-up
failure
received.
→ Communication line failure or main CPU (IC8101) start-up
failure
Start-up confirmation
reception failure
Flashes twice
reception failure
Flashes twice
H: On
L: Off
Start-up reason confirmation from the main CPU (IC8101) is
not received.
→ Main CPU (IC8101) start-up failure or monitor micropro-
cessor (IC2002) reception failure
not received.
→ Main CPU (IC8101) start-up failure or monitor micropro-
cessor (IC2002) reception failure
Regular communication
failure
Flashes 3 times
failure
Flashes 3 times
H: On
L: Off
Regular communication that is performed at 1 second inter-
vals in the normal operation is interrupted.
→ Main CPU (IC8101) operation failure or monitor micropro-
cessor (IC2002) reception failure
vals in the normal operation is interrupted.
→ Main CPU (IC8101) operation failure or monitor micropro-
cessor (IC2002) reception failure
Restart failure
Flashes 4 times
Flashes 4 times
H: On
L: Off
When restarted by a software with the standby off/on, restart
completion notification is not received.
→ Main CPU (IC8101)restart failure to monitor microproces-
sor (IC2002) reception failure
completion notification is not received.
→ Main CPU (IC8101)restart failure to monitor microproces-
sor (IC2002) reception failure