Sharp LC32SB27U Service Manual - Page 64

Basically, log analysis of debug print statements or communi

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Page 64 highlights

LC-32D47U/LC-32SB27U/LC-C3237U 2) Power error details (Power red LED flashes twice and Power green LED flashes) Error type DET_POW1 error Flashes once DET_POW2 error Flashes twice DET_6V error Flashes 3 times Power green LED operation (1 cycle) H: On L: Off H: On L: Off H: On Pins are monitor microprocessor pins unless otherwise specified. DET_POW1 error (L). Detected by the above polling. UR13V is not applied. DET_POW2 error (L). Detected by the above polling. Detection starts in 400 ms after SMPOW becomes High. D3.3V is not applied. DET_6V error (L). D5V or A5V is not applied. PNL_POW0 error Flashes 5 times Main error Flashes 7 times L: Off H: On L: Off H: On DET_POW0 error (L). Detected by the above polling. Detection starts in 400 ms after PNL_ON becomes High. Panel power is not applied. Main microprocessor detection error. (FAN error, 1bitAMP error, etc.) L: Off 3) Communication error details (Power red LED flashes 3 times and Power green LED flashes) Error type Initial communication reception error Flashes once Time-out setting reception error Start-up confirmation reception error Flashes twice Regular communication error Flashes 3 times Power green LED operation (1 cycle) H: On L: Off H: On Basically, log analysis of debug print statements or communication log analysis by a bus monitor is performed. Initial communication from the main CPU is not received. If initial communication from the main microprocessor is not received within 15 seconds during start-up, it is judged to be an error. The unit is reset and restarted until the third error, and error standby is activated at the fourth error. Communication line error or main CPU start-up failure. Time-out setting and start-up mode change from the main CPU is not received. Main CPU start-up failure or front microprocessor reception failure. L: Off H: On L: Off In the operation state, regular communication is performed every 1 second. If communication from the min CPU is not received five times in a raw, it is judged to be a regular communication error. The regular communication errors are counted. The unit is reset and restarted until the third error, and error standby is activated at the fourth error. The regular communication error counter is cleared to 0 when normal operation continues for 10 minutes. Main CPU start-up failure or front microprocessor reception failure. 6 - 14

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LC-32D47U/LC-32SB27U/LC-C3237U
6 – 14
2) Power error details (Power red LED flashes twice and Power green LED flashes)
3) Communication error details (Power red LED flashes 3 times and Power green LED flashes)
Error type
Power green LED operation (1 cycle)
Pins are monitor microprocessor pins unless otherwise
specified.
DET_POW1 error
Flashes once
H: On
L: Off
DET_POW1 error (L).
Detected by the above polling.
UR13V is not applied.
DET_POW2 error
Flashes twice
H: On
L: Off
DET_POW2 error (L).
Detected by the above polling.
Detection starts in 400 ms after SMPOW becomes High.
D3.3V is not applied.
DET_6V error
Flashes 3 times
H: On
L: Off
DET_6V error (L).
D5V or A5V is not applied.
PNL_POW0 error
Flashes 5 times
H: On
L: Off
DET_POW0 error (L).
Detected by the above polling.
Detection starts in 400 ms after PNL_ON becomes High.
Panel power is not applied.
Main error
Flashes 7 times
H: On
L: Off
Main microprocessor detection error.
(FAN error, 1bitAMP error, etc.)
Error type
Power green LED operation (1 cycle)
Basically, log analysis of debug print statements or communi-
cation log analysis by a bus monitor is performed.
Initial communication reception
error
Flashes once
H: On
L: Off
Initial communication from the main CPU is not received. If initial
communication from the main microprocessor is not received
within 15 seconds during start-up, it is judged to be an error.
The unit is reset and restarted until the third error, and error
standby is activated at the fourth error.
Communication line error or main CPU start-up failure.
Time-out setting reception error
Start-up confirmation reception
error
Flashes twice
H: On
L: Off
Time-out setting and start-up mode change from the main CPU is
not received.
Main CPU start-up failure or front microprocessor reception failure.
Regular communication error
Flashes 3 times
H: On
L: Off
In the operation state, regular communication is performed every 1
second. If communication from the min CPU is not received five
times in a raw, it is judged to be a regular communication error.
The regular communication errors are counted. The unit is reset
and restarted until the third error, and error standby is activated at
the fourth error.
The regular communication error counter is cleared to 0 when nor-
mal operation continues for 10 minutes.
Main CPU start-up failure or front microprocessor reception failure.