Read Sony KDS-55A2000 Service Manual online
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KDS-55A2000
RM-ED006
5. SELF-DIAGNOSIS FUNCTION OPERATION
2
:
Temp over
When the inside temperature sensed with IC3150, IC3200 and IC2000 mounted on the S1
board, S2 board and C board respectively exceed the threshold, DEM (Display Engin u-com)
detcts it and turns off the lamp.
board, S2 board and C board respectively exceed the threshold, DEM (Display Engin u-com)
detcts it and turns off the lamp.
3
:
Lamp cover
When the lamp cover is opened or the harness from the T board is off, DEM detects it and
turns off the lamp.
turns off the lamp.
4
:
FAN error
When any FAN stops or the harness is not connected correctly, DEM detects it and
turns off the lamp.
turns off the lamp.
5
:
Lamp driver
When the ballast is not working with high voltage, DEM detects it and turns off the lamp.
6
:
Power error
When the 5V regulated from the 11V is low, TVM (TV u-com) detects it and turns off the
lamp.
lamp.
7
:
Audio
When DC appears on the speaker line because of audio amp failure, DEM detects it and
turns off the lamp.
turns off the lamp.
8
:
Power-OVP
When the output voltage from the 7V line is abnormally high, TVM detects it and
turns off the lamp.
turns off the lamp.
9
:
Device error
When the temperature sensor and bus decoder IC’s do not return ACK on IIC bus to DEM,
DEM detects it and turns off the lamp.
DEM detects it and turns off the lamp.
LAMP
:
Lamp
When the lamp is broken, DEM detects it.
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