8. SELF DIAGNOSTIC FUNCTION
1) Press O9� button on Remote Control during display of adjustment menu in the service mode.
The diagnosis will begin to check if interface among ICOs are executed properly.
2) During diagnosis, the following displays are shown.
Indicated color of mode now selected : Green and Red
Indicated color of other modes: Black
<SELF CHECK>
Green :Normal
12300****
Red : The microcomputer operates to provide judgement
2TIME : 000000:00
3POWER : 0of no video signal. The red color is still indicated
4BUS LINE: OKthough the signal is input, failure may exist in input
5BUS CONT : OKsignal line including QV01.
6BLOCK : UV V1 V2 V3 V4
NOTE: (1) In case that "on timer" indicator is blinking with
GENERAL ADJUSTMENTSinterval 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
1Part number of microcomputer (QA01)not operate, but a part of Bus line does not
2Total hour of turn the TV on. (Unit: H)operate normally. Check Bus line.
3Operation number of protecting circuit ----O00� is nor-
mal.
When indication is other than O00�, overcurrent apts to
flow, and circuit parts may possibly be damaged.
4 BUS LINE ----OOK� is normal.
OSDA1-GND� ----SDA-GND short circuit.
?SCL1-GND? ----SCL-GND short circuit.
?SCL1-SDA1? ----SCL-SDA short circuit.
5BUS CONT ----OOK� is normal.
When indication shows OQ uuu NG�, the device with
the number may possibly be damaged.
6BLOCK
UV : TV reception mode
V1 : VIDEO 1 input mode (a1)
V2 : VIDEO 2 input mode (a2)
V3 : VIDEO 3 input mode
V4 : VIDEO 4 input mode
The items marked with are not usable to display in the SELF DIAGNOSTIC FUCTION for some model.
*
� 12 � |
ACEC
TOSHIBA
