Toshiba 42AV500P, Service Manual

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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 is executed properly.
2. During diagnosis, the following displays are shown.
* Self check display and Item are subject to the models.
(1) Firmware :
Version information of microprocessor
(2) Time : Total hour of turn the TV on. (Unit : H)
(3) Bus line : -- "OK" is normal
SCL-GND (Red indication) : SCL-GND short circuit
SDA-GND (Red indication) : SDA-GND short circuit
SCL-SDA (Red indication) : SCL-SDA short circuit
(4) Bus cont : --- "OK" is normal.
NG is abnormal (Red indication).
When the abnormal status is detected, type name of semiconductor is
indicated in red colour.
(5) Block
UV : TV reception mode
V1 - V4 : VIDEO 1-4 input mode
UV RF
V1 1 SCART 1