Toshiba 43A9UA, Service Manual

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GENERAL ADJUSTMENTS
8. SELF DIAGNOSTIC FUNCTION
1) Press “9” button on Remote Control during display of adjustment menu in the service mode.
The diagnosis will begin to check if interface among IC’s are executed properly.
2) During diagnosis, the following displays are shown.
2300****
POWER : 00
BUS CONT : OK
BLOCK : UV V1 V2 V3
QV01
<SELF CHECK>
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Part number of microcomputer (QA01)
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Total hour of turn the Power on. (unit: hour)
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Operation number of protecting circuit ----“00” is nor-
mal.
When indication is other than “00”, overcurrent apts to
flow, and circuit parts may possibly be damaged.
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BUS CONT ----“OK” is normal.
When indication shows “Q
uuu
(Green: OK, Red:
NG)”, the device with the number may possibly be dam-
aged.
���
BLOCK
UV
: TV reception mode
V1 : VIDEO 1 input mode (
a
1)
V2 : VIDEO 2 input mode (
a
2)
V3 : VIDEO 3 input mode (
a
3)
Indicated color of mode now selected : Green and Red
Indicated color of other modes
: White
Green : Normal
Red :
The microcomputer operates to provide judgement
of no video signal. The red color is still indicated
though the signal is input, failure may exist in input
signal line including QV01.
QV01 : In case of indication green ---Normal
In case of indication red with input signal----
Failure may exist in output line including QV01.
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TIME : 000000
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* The items marked with are not usable to display in the SELF DIAGNOSTIC FUCTION for some model.