Toshiba 61PH18P, 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****
TIME : 000000
POWER : 00
BUS CONT : OK
BLOCK : UV V1 V2 V3 V4
<SELF CHECK>
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Part number of microcomputer (QA01)
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Total hour of turn the TV on. (Unit: H)
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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
NG”, the device with
the number may possibly be damaged.
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BLOCK
UV : TV reception mode
V1
: VIDEO 1 input mode (
a
1)
V2 : VIDEO 2 input mode (
a
2)
V3 : VIDEO 3 input mode
V4 : VIDEO 4 input mode
Indicated color of mode now selected : Green and Red
Indicated color of other modes
: Black
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.
NOTE: (1) In case that "on timer" indicator is blinking with
interval of 0.5 seconds; it means protecting
circuit (Current limiter) is operating, and cir-
cuit components may possibly be damaged.
Check related components.
(2) In case that "on timer" indicator is blinking with
interval of 1 second; Protecting circuit does
not operate, but a part of Bus line does not
operate normally. Check Bus line.
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*
The items marked with are not usable to display in the SELF DIAGNOSTIC FUCTION for some model.