JVC HV-29LPZ/HK Adjustment of Focus & Screen, Adjustment Signal, Screen VR, Generator HVT

HV- 29LPZ

ADJUSTMENT OF FOCUS & SCREEN

Item

Measuring instrument

Test point

Adjustment part

Description

Adjustment of	Signal			FOCUS 1 VR(In HVT) 1.		Receive a cross -hatch signal.
FOCUS	generator			FOCUS 2 VR(In HVT) 2. Press the ZOOM key and select the regular mode.
				3.		By turning the FOCUS 1 VR, adjust the to make the vertical
						lines as fine and sharp as possible.
					4.	By turning the FOCUS 1 VR, adjust the picture so that the 5th
		HVT				vertical line from left side of the cross-hatch picture becomes
						thinnest.
					5.	By turning the FOCUS 2 VR(In CRT SOCKET PWB), adjust
						the 3rd horizontal line from the upper side may become
			FOCUS 2 VR			uniform at the line center and its periphery .
			FOCUS 1 VR		6.	Carry out adjustment by repeating the steps 3, 4 and 5 about.
			SCREE N V R		7.	Make sure that the screen is darkened, the lines remain in
						good focus.

FO CUS 2 V R				FO CUS 1 V R
					1
					2
1	2	3	4	5	3

Adjustment of

Signal

SCREEN VR

1.

Receive a whole black signal .

SCREEN VR

generator

(In HVT)

2.

Press the ZOOM key and select the regular mode.

3.

Select 2. V/C from the SERVICE MENU.

4.

Rotate the SCREEN VR (In HVT) clockwise(from 1→0→1)

from the full counterclockwise slowly and stop it at the point

where “CLOW” status (marked

in Fig.) changes from 1 to

V /C

PAL

0 (which is indicated at the 3rd column from the right.).

1. RGB _ BLK

00

*

“CLOW” : control loopout of window.

- / + OK : STORE

DISP : EXIT

CLOW

1

0 0 0 0 0

1

0 0

status

S ERVICE M ODE SCRE EN

No. 52012 21