Toshiba 32HFX72 service manual Self Diagnostic Function, Self Check, BUS Line OK BUS Cont OK, Sync

SPECIFIC INFORMATIONS 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.

SELF CHECK

￿NO. 23 * * * * * *

￿POWER : 000

￿BUS LINE : OK

￿BUS CONT : OK

￿BLOCK : UV V1 V2

or	QV01 QV01S
SYNC

￿Part number of microprocessor (QA01)

￿ Operation number of protection circuit (current limiter) . . . .				“000” is normal.
￿ BUS line check	“OK”	Normal
	“SCL-GND” or “NG”		SCL-GND short circuit
	“SDA-GND” or “NG”		SDA-GND short circuit
	“SCL-SDA” or “NG”		SCL-SDA short circuit

￿BUS line ACK (acknowledge) check

“OK”	Normal
Display of Location Number . . . .		NG
(Display example)
“QA02 NG”, “H001 NG”, “Q501 NG” etc.
Note: The indication of failure place is only one place though failure places are plural. When

		repair of a failure place finishes, the next failure place is indicated. (The order of priority of
		indication is left side.)
￿ Sync. signal check	Green display		Normal
	Cyan display		No check
	Red display		NG
		UV	TV mode
		V1	VIDEO 1 mode
		V2	VIDEO 2 mode

*The items marked with are not usable to display in the SELF DIAGNOSTIC FUNCTION for some model.

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