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 ICs are executed properly.
2) During diagnosis, the following displays are shown.
Indicated color of mode now selected : Green and Red
<SELF CHECK>Indicated color of other modes: White
23******Green :Normal
POWER : 00Red : The microcomputer operates to provide judgement
BUS LINE : OK
of no video signal. The red color is still indicated
BUS CONT : OK
though the signal is input, failure may exist in input
BLOCK : UV V1 V2 V3
signal line including QV01.
QV01
QV01 : In case of indication green ---Normal
GENERAL ADJUSTMENTSIn case of indication red with input signal----
Failure may exist in output line including QV01.
Part number of microcomputer (QA01)
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 uuu NG , the device with
SPECIFIC INFORMATIONS
the number may possibly be damaged.
BLOCK
UV : TV reception mode
V1 : VIDEO 1 input mode (a1)
V2 : VIDEO 2 input mode (a2)
V3 : VIDEO 3 input mode (a3)
The items marked with are not usable to display in the SELF DIAGNOSTIC FUNCTION for some model.
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10 |
ACEC
TOSHIBA
