Sharp LC-32XL8E/S/RU Service Manual page 68

LC-32XL8E/S/RU, LC-37XL8E/S/RU
SCART2:
No picture from EXT3 appears on EXT2- connected monitor.
TERMINAL UNIT:
Is CVBS signal input from pin (51) of IC506 to pin (19) of
SCART2 (SC503)?
Is CVBS signal input from pin (5) of the connector P501 to pin (3)
of IC506 (VIDEO SELECTOR)?
MINI AV UNIT:
Is CVBS signal input from pin (6) of the input terminal J901 to pin
(5) of the connector (P501)?
Is V3_PLUG signal of the CVBS signal detection function from
pin (7) of the input terminal J901 normal?
Check between V3_PLUG_LINE J901 and pin (2) of IC506 in the
TERMINAL UNIT. (Connector P901/P501, etc.)
LED flashing atterns for error notification
1) Power LED
Error type
Lamp failure H: On
Flashes once: Fast L: Off
Power failure H: On
Flashes twice L: Off
H: On
Communication fail-
ure with main CPU
Flashes 3 times L: Off
Monitor temp. failure H: On
Flashes 5 times L: Off
<During external connection> No picture on the monitor (4)
NO
NO
NO
NO
250ms 1sec
Power LED operation (1 cycle)
YES Check the setting of an external input device that connects of
SC503.
YES Check the IC506 and its peripheral circuits.
YES Check the connector (P501/P901)
YES Check the setting of an external input device that connects of
J901.
ERR_PNL(IC2002_43pin): Abnormal L. Confirmed after 5 consec-
utive detections at 1 second intervals.
(Detected only when the backlight is light is on).
Note that after five detection counts, the lamp cannot be activated
except in the monitoring process.
(For the first time doesn't make an error only by inverter reset
OFF)
Accumulated counts are cleared to 0 when the corresponding set-
ting in the process adjustment(2/33) is made or when the power is
turned on with [CH_DOWN] and [VOL_UP] on the unit down or
after continuous illumination for 3 minutes.
Refer to "Power failure details".
Refer to "Communication failure details".
Communication line failure or main CPU(IC8101) communication
failure.
→Check main CPU (IC8101).
If the panel temperature is 60°C or more for 15 seconds or more in
a row, CAUTION appears.
If the panel temperature is 60°C or more for 15 seconds or more in
a row, error standby is activated.
(MONITOR MAX TEMP of process adjustment(29/33): Change of
temperature failure AD value): Thermistor
4 – 21
Description