Toshiba 32HFX72 service manual Electrical Adjustments, Adjustment Procedure

ELECTRICAL ADJUSTMENTS

ITEM		ADJUSTMENT PROCEDURE
FOCUS VR ADJ	1.	Enter the service mode, then select any register item.
	2. Press the TV/VIDEO button on the Remote until the black cross-bar pattern ap-
		pears on the screen.
	3. Adjust the FOCUS control (on T461) for well defined scanning lines on the picture
		screen.
SUB-BRIGHTNESS	1.	Constrict the picture height until the verti-
(BRTC)		cal retrace line appears adjusting the item
		HIT (HEIGHT).
	2. Adjust the CONTRAST control to the mini-
		mum.
	3. Call up the adjustment mode display, then
		select the item BRTC.
	4. Press the VOLUME s or t button so the
		belt of vertical retrace line just disappear.
	5. Adjust the CONTRAST control for the de-
		sired contrast.
	6. Perform the HEIGHT adjustment.
				Vertical retrace line
SUB-COLOR	1.	Receive color-bar signal from color-bar
(SCOL)		generator.		Blue
SUB-TINT	2.	Press the RESET button.	Magenta
(TNTC)	3.	Connect oscilloscope to TP501 on SIG-
						3 (	1.6V0-P)
		NAL board.
					2
	4.	Adjust the CONTRAST control to the	0
		minimum.
	5.	Call up the adjustment mode display,
		then select the item TNTC.
	6.	Adjust the SUB-TINT by pressing the
		VOLUME s or t button to obtain a blue
		bar to magenta bar ratio of 3:2 as shown.
	7.	Press the RESET button.
	8.	Select the item SCOL.
	9.	Adjust the SUB-COLOR by pressing the VOLUME s or t button to achieve
		1.6V0-pof a blue bar on scope.
	10.	Check the picture with off-air signal.
WIDTH	1.	Call up the adjustment mode display, then select the item WID.
(WID)	2.	Press the VOLUME s or t button to get the picture so the left and right edges of
		raster begins to lack.
	3. Press the VOLUME s or t button to advance the data by 7 steps.
	Note : Check the horizontal picture position is correct.

SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS

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