Adjustments - Sony Trinitron CPD-420GS Service Manual

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
IBM AT Computer
as a Jig
D-sub
(9 Pin [female])
*The parts above (
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, adjust coarsely the purity
magnet so that a green raster positions in the center
of 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-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)
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.
SECTION 4

ADJUSTMENTS

2 A-1500-819-A
Interface Unit
mini Din 4 Pin
(8Pin)
~ ) are necessary for DAS adjustment.
* The parts above ( 1 ~ 3 ) are necessary for DAS adjustment. 1 3
—15—
3 3-702-691-01
Connector Attachment
To BUS CONNECTOR
4 Pin 4 Pin
Convergence Fine Adjustment
Set DY four-pole magnet
before adjustment.
This should be prime mode.
NECK Assy
P.S Mg
6-pole Mg
4-pole Mg
1. Receive R.B. cross-hatch.
2. Adjust H.STAT and V.STAT at four-pole magnet.
Four-Pole Magnet
2
1
1
2
1
2
1
2
CPD-420GS/GST
to mechanical center
Set the Mechanical
finger Center
XBV
DY CRT
R
1 +
2
B
R
R
B
B
R
2
1 +
B
R
B
R B