Sony KDS-50A2000 Service Manual page 14

- The results display is not automatically cleared. In case of repairs and after repairs, check
the self-diagnosis screen and be sure to return the results display to "0".
- If the results display is not returned to "0" it will not be possible to judge a new malfunction
after completing repairs.
<Method of Clearing Results Display>
1. Power off (Set to the standby mode)
2. DISPLAY
3. Channel 8
<Method of Ending Self-Diagnosis Screen>
- When ending the self-diagnosis screen completely, turn the power switch OFF on the
remote commander or the main unit.
5. Self-Diagnosis function operation
2 : Temp over
3 : Lamp cover
4 : FAN error
5 : Lamp Driver
6 : Power error
7 : Audio
8 : Power-OVP
9 : Device error
LAMP : Lamp
KDS-50A2000/50A2010/55A2000/60A2000/60A2010
K
Channel 5
ENTER
When the inside temperature sensed with IC3150, IC3200 and IC2000
mounted on S1 board, S2 board and C board respectively exceed
the threshold, DEM (Display Engine u-com) detects it and makes
turn off the lamp.
When the lamp cover is opened or harness from T board is off, DEM detects it
and makes turn off the lamp
When any FAN is stopping or harness is not connected correctly,
DEM detects it and makes turn off the lamp
When the ballast is not working with high voltage, DEM detects it and makes
turn off the lamp
When the voltage converted on 5V regulated from 11V is low, TVM
(TV u-com) detects it and makes turn off the lamp.
When DC is appeared by audio amp failure at speaker line, DEM detects it
and makes turn off the lamp.
When the output voltage from 7V is abnormally high, TVM detects
it and makes turn off the lamp.
When the temperature sensor and bus decoder ICs do not return ACK on IIC
bus to DEM, DEM detects it and makes turn off the lamp.
When the lamp is broken, DEM detects it.
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RM-YD010 RM-YD010 RM-YD010
Vol - POWER
RM-YD010 RM-YD010