IBM 6550-23N Service Manual page 20

6550-23N/23S/33N/63N/63S/73N
• 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. Receive the crosshatch of R and B.
2. Recieve H. STAT and V. STAT by 4 pole magnet.
3. Recieve the white crosshatch signal.
4. Recieve HMC and VMC by 6 pole magnet.
5. Recieve the crosshatch of R and B.
Note: Adjust H. STAT and V. STAT in the beggining by 4 pole
magnet not adjuust them by register immediately.
6. Insert to TLH correction board and correct H. TILT.
7. Correct XCV by XCV core.
8. Correct V. TILT bu TLV-VR.
9. Adjust Y cross by YCH-VR.
10. Correct to get the most suitable convergence pattern.
When necessary, adjust above mentioned from step 1 to step
10 reiterate.
11. Paint lock TLH corection board, neck assy 4 and 6 pole
magnet.
Purity Mg
XCV YCH
B
R
TLV
TLH
R
B
B
R
<<Neck Assy's Zero Position>>
Purity
4-pole Mg
6-pole Mg
TLH
R B
R B B R
4 Pole 6 Pole
• Convergence Specification
• White Balance Adjustment Specification
(1) 9300K
x = 0.283 ± 0.005
y = 0.298 ± 0.005
(2) 5000K
x = 0.346 ± 0.005
y = 0.359 ± 0.005
• Vertical and Horizontal Position and Size
Specification
A
XCV
YCH
• Focus adjustment
TLV
H-Trap
Adjust the focus volume 1 and 2 for the optimum focus.
Standard: HMC, VMC ± 0.1 mm (In the center of screen)
4-2
B
MODE All mode
A
0.20 mm
A
0.24 mm
B
b
MODE All mode
B
A 312 mm
a
234 mm
B
a 1.8 mm
b 1.8 mm
FBT
Focus volume 1 (V)
Focus volume 2 (H)