Sony CPD-G220 Service Manual ▷ View online
CPD-G220(E)
3-1
SECTION 3
ADJUSTMENTS
•
Landing Rough Adjustment
1. Enter the full white signal. (or the full black dots signal)
2. Set the contrast to “CONT”=MAX.
3. Make the screen monogreen.
Note: Off the outputs from R ch and B ch of SG.
4. Reverse the DY, and adjust coarsely the purity magnet so that a green
raster positions in the center of screen.
5. Adjust the "H.CENTER" with the H CENTER Volume .(RV502 on the D
board)
6. Moving the DY forward, adjust so that an entire screen becomes
monogreen.
7. Adjust the tilt of DY, and fix lightly with a clamp.
Note: “TILT” shall be set at 0
•
Landing Fine Adjustment
1.
Put the set inside the Helmholtz coil.
2.
Set the TLH to the Zero position.
3.
Receive the single green signal.
4.
Demagnetize the CRT surface with the hand degausser , and perform
auto degaussing.
5.
Attach the wobbling coil to the designated part of the CRT neck.
6.
Attach the sensor of the landing adjustment unit on the CRT surface.
7. Adjust the DY position and purity, and the DY tilt.
8. Fasten DY with screw.
Note:Torque 22 ±2kgcm (2.2 ± 0.2 Nm)
Perform auto degaussing.
Purity Magnet
<<Zero Position>>
L/D control specification
± 5
± 5
± 5
± 5
± 5
± 5
± 5
± 5
± 4
Purity magnet position
± 4
CPD-G220(E)
3-2
9. Adjust each top and bottom pins by two wedges and then not swing DY
neck right and left. (When fixing DY with wedges, insert wedges
completely so that the DY does not shake.)
10. Adjust the top and bottom pins with the TB.PIN VR complettely. And
ajust the V.Size simulation.
11. Adjust the V.key (=H.Trapxoid) with the H-Trp VR so that [a] become
equol to the [b]
12. If the corner is not within the standards, adjust disc magnet to satisfy L/
D adjustment standards.
Note:
(1) When necessary to paste magnets more than 2 pieces, be careful that the
convergence and the distortion would be alterable.
(2) Paste within 80 to 120 mm from the DY on the diagonal line of the
magnet.
a
b
c
d
"a" and "b" must be equal.
c
d
13. If using the magnet, be sure to demagnetize with the degausser and
check.
14. Remove the sensor and wobbling coil.
15. Fix the purity magnet paisted on the DY with the white pen.Fix it with
the RTV.
•
Convergence Rough Adjustment
1.
Enter the white crosshatch signal (white lines on black).
2.
Adjust roughly the horizontal and vertical convergence at four-pole
magnet.
3.
Adjust roughly HMC and VMC at six-pole magnet.
•
Convergence Adjustment
< Static convergence >
1.
Change the "CONV SW" to 0.
2.
Receive the crosshatch of R and B. (on black)
3.
Adjust H. STAT and V. STAT with 4 pole magnet.
4.
Recieve the white crosshatch signal.(White line on black)
5.
Adjust HMC and VMC with the 6 pole magnet.
6.
Recieve the crosshatch of R and B. (on black)
Note: Adjust H. STAT and V. STAT in the beggining by 4 pole magnet not
adjust them by register immediately.
CPD-G220(E)
3-3
7.
If necessary, the 3-6 procedures.
8.
Change the "CONV SW" to 6. then set the following registers to 0.
"YBH_T_HI", "TBH_T_LO"
"YBH_B_HI", "YBH_B_LO"
"VSTAT_T_HI", "VSTAT_T_LO"
"VSTAT_B_HI""VSTAT_B_HI"
9. Adjust the H Static and V Static with the register "HSTAT_HI" and
"VSTAT_HI". (These registers should be within the limit between -40
and +40.)
10. Insert to TLH correction board and correct H. TILT.
11. Adjust XCV with the XCV volume.
12 Adjust YCH with the YCH volume.
13 Adjust V. TILT with the TLV-VR.
14. If necessary, repeat the 1-13 procedures to get the most suitable conver-
gence pattern.
15. Paint lock TLH corection board, neck assy 4, 6 pole magnet and XCV
volume.
Purity Mg
4-pole Mg
6-pole Mg
XCV
YCH
H-Trap
TLH
TLV
TB, Pin VI
4 Pole
6 Pole
[ Neck Assy's Zero Position ]
Purity
B
R
R
B
R
B
B
B
R
R
R
B
B
R
XCV
YCH
TLV
TLH
B
A
A
0.20 mm
B
MODE
All mode
0.24 mm
•
White Balance Adjustmen Specification
(1) 9300K
Part of shadow line
for the right figure.
(2) 5000K
Part of shadow line
for the right figure.
•
Convergence Specification
VR
x = 0.283
y = 0.298
y = 0.298
0.005
0.005
x = 0.346
y = 0.359
y = 0.359
0.005
0.005
CPD-G220(E)
3-4
Connect the communication cable of the computer to the connector located on the D board. Run the service software and then follow the instruction.
IBM AT Computer
as a Jig
1-690-391-21
1
A-1500-819-A
Interface Unit
Interface Unit
2
*The parts above ( ) are necessary for DAS adjustment.
1
3
D-sub
(9 Pin [female])
(9 Pin [female])
mini Din
(8Pin)
(8Pin)
4 Pin
3-702-691-01
Connector Attachment
Connector Attachment
3
To BUS CONNECTOR
4 Pin
4 Pin
• Vertical and Horizontal Position and Size Specification
• Focus rough adjustment
1.
Receive the mE pattern signal. (black characters on green)
2.
Adjust the H FOCUS of the screen corner with Fcous VR in the bottom
of the FBT.
3.
Receive the cross-hatch pattern signal .(green line on black)
4.
Adjust the V FOCUS of the center and the y-axis with the FOCUS VR
in the top of FBT.
A
312 mm
B
MODE
All mode
234 mm
a 1.8 mm
b 1.8 mm
b 1.8 mm
a
B
A
b
FBT
Focus volume 1 (V)
Focus volume 2 (H)
G2 VR
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