Sharp LC-52DH77E/RU/S, Руководство по обслуживанию

Страница: 50 / 98

LC
-
52DH77E/RU/S
4 – 16
2) Inverter/Lamp failure details (Power red LED flashes once and OPC (preset) LED flashes)
3) Power failure details (Power red LED flashes twice and OPC (preset) LED flashes)
4) Communication failure details (Power green LED flashes once and OPC (preset) LED flashes)
5) Other failure details (Power green LED flashes twice and OPC (preset) LED flashes)
Error type OPC (preset) LED operation (1 cycle) Note: Pins are monitor microprocessor pins unless otherwise specified (IC2002).
Lamp failure
Flashes once
H: On ERR_PNL (40pin): 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 activated except in the moni-
toring process. (For the first time, only the inverter is reset, and error OFF is not acti-
vated.)
Accumulated counts are cleared to 0 when the setting in the adjustment process is
made, when AC_ON is performed with [CH_DOWN] and [VOL_UP] on the unit down
or after continuous illumination for 3 minutes.
L: Off
Error type OPC (preset) LED operation (1 cycle) Note: Pins are monitor microprocessor pins unless otherwise specified (IC2002).
PS_ON
AC_DET fail-
ure Flashes
once
H: On AC_DET (72pin: Abnormal (L).
If error is detected during start-up or operation, the power is turned on again by inter-
rupt handling (instantaneous blackout processing).
L: Off
D_POW
Main 12V
failure
Flashes twice
H: On DET_12V (34pin): Abnormal (L). Main 12V is not applied.
L: Off If error is detected during start-up or operation, the power is turned on again by polling.
D_POW
Digital 3.3V
Failure
Flashes 3
times H: On DET_D3V3 (35pin): abnormal (L). Digital 3.3V is not applied.
L: Off If error is detected during start-up or operation, the power is turned on again by polling.
Error type OPC (preset) LED operation (1 cycle) Note: Basically, debug print logs are analyzed or communication logs
are analyzed by a bus monitor.
Initial communi-
cation reception
failure Flashes
once
H: On Initial communication from the main CPU is not received. (Request for the
monitor model No. is not received.)
→
Communication line failure or main CPU start-up failure
L: Off
Start-up confir-
mation recep-
tion failure
Flashes twice H: On Start-up reason confirmation from the main CPU cannot be received. (Start-
up communication until start-up reason notification command is not
received.)
→
Main CPU start-up failure or monitor microprocessor reception failure
L: Off
Regular commu-
nication failure
Flashes 3 times H: On Regular communication that is performed at 1 second intervals in the nor-
mal operation is interrupted.
→
Main CPU operation failure or monitor microprocessor reception failure
L: Off
Other communi-
cation failure
Flashes 5 times
H: On When a request (PM_REQ=H) is sent from the main microprocessor, the
request command is not output from the main CPU, etc.
→
Main CPU operation failure or monitor microprocessor reception failure
L: Off
Error type OPC (preset) LED operation (1 cycle) Note: Pins are monitor microprocessor pins unless otherwise specified
(IC2002).
Monitor temper-
ature failure
Flashes once
H: On If the panel temperature is 60
°
C or more for 15 seconds or more in a row, CAUTION
appears on the OSD (flashes in red in the lower right screen).
If the panel temperature is 60
°
C or more for 25 seconds or more in a row, error
standby is activated.
(MONITOR MAX TEMP on page 13/16 of the adjustment process: Change of tem-
perature failure AD value): Thermistor
L: Off
Main failure
Flashes 3 times
H: On Main microprocessor detection error (CPU temperature error, etc.)
Details are displayed on page 1/16 of the adjustment process for the main micropro-
cessor.
L: Off