Toshiba 21J1M Manuale di servizio - Pagina 8
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Stampa la pagina8. 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.
<SELF CHECK>
2 3 * * * * * *
POWER
: 00
BUS LINE
: OK
BUS CONT : OK
BLOCK
: UV V1
Part number of microprocessor(Q100)
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.
BUS LINE CHECK ----"OK" is normal.
"SDA1-GND" ------------- SDA-GND short circuit.
"SCL1-GND" -------------- SCL-GND short circuit.
"SCL1-SDA1" ------------- SCL-SDA short circuit.
BUS CONT ----"OK" is normal.
When indication shows "Q
the number may possibly be damaged.
BLOCK
UV : TV reception mode
V1 : VIDEO input mode (
NG", the device with
1)
Indicated color of mode now selected : Green and Red
Indicated color of other modes
Green : Normal
Red :
The microprocessor 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 Q100.
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: White