Compaq D-1H Section Adjustments, Landing Rough Adjustment, Convergence Fine Adjustment

SECTION 4

ADJUSTMENTS

Connect the communication cable of the connector located on the D board on the monitor. Run the service software and then follow the instructions.

1 1-690-391-21 2		A-1500-819-A	3 3-702-691-01
		Interface Unit		Connector Attachment
IBM AT Computer					To BUS CONNECTOR
as a Jig
D-sub	mini Din	4 Pin	4 Pin 4 Pin
(9 Pin [female])	(8Pin)

*The parts above ( 1 ~ 3 ) are necessary for DAS adjustment.

Allow a 30 minute warm-up period prior to making the following adjustments:

Landing Rough Adjustment

1.	Enter the full white signal.
2.	Adjust the contrast to the maximum.
3.	Input full green signal.
4.	Moving the DY backward, and adjust coarsely the purity
	magnet sothat a green raster positions in the center of

Convergence Fine Adjustment

Set DY four-pole magnet to mechanical center

before adjustment.
This should be prime mode.	Set the	Mechanical
		Center
	finger

	screen.
5.	Moving the DY forward, adjust so that an entire screen
	becomes pure green.
6.	Adjust the tilt of DY, and tighten lightly with a clamp.

•Landing Fine Adjustment

1.	Place the set in the Helmholtz coil.
2.	Enter a green signal only.
3.	Degauss the entire screen with hand-degausser. Then auto-

NECK Assy

6-pole Mg

4-pole Mg

P.S Mg

DY

CRT

	degauss it.
4.	Attach a wobbling coil to the specified position of CRT
	neck.
5.	Attach a landing adjuster sensor on the CRT.
6.	Using a landing checker, adjust the DY position, purity,
	tilt of DY.
7.	Clamp the DY screw.

Clamping torque: 22 + 2 kgcm (2.2+ 0.2 N.m)

1.Receive R.B. cross-hatch.

2 Adjust H.STAT and V.STAT at four-pole magnet.

4 Pole Magnet

2

R

11 + 2

B

1	R	R
2		B
		B

•Convergence Rough Adjustment

1.All digital convergence data should be zero by MCP.

2.Enter the white crosshatch signal.

3.Adjust roughly the horizontal and vertical convergence at four-pole magnet.

4.Adjust roughly HMC and VMC at six-pole magnet.

2	1	R	1 + 2
		B

	R
1	B
	2
	R B