Manual - Maintenance Electronique / Monitors Service Center

6 Alignment and Adjustments
6-2-4 Parallelogram Adjustment
CONDITIONS
Scanning Frequency: Adjust for each mode listed
in Table 3-1.
Display image: Crosshatch pattern
Adjust the PARA setting to make the image area
rectangular.
2.5 mm
Figure 6-7. Parallelogram
6-2-5 Side Pincushion Adjustment
CONDITIONS
Scanning frequency: Adjust for each mode listed
in Table 3-1.
Display image: Crosshatch pattern
Brightness: Cut-off
Contrast: Maximum
Adjust the PIN setting to straighten the sides of
the image area.
| C1 |, | C2 | ≤ 2.0 mm, | D1 |, | D2 | ≤ 2.0 mm.
6-2-6 Tilt Adjustment
C2
D1 D2
C1
Figure 6-8. Pincushion
CONDITIONS
Scanning Frequency: Adjust for each mode listed
in Table 3-1.
Display image: Crosshatch pattern
Brightness: Cut-off
Contrast: Maximum
Adjust the TILT setting to correct the tilt of the
display.
6-2-7 Degauss
No adjustments are available for the degaussing
circuit. The degaussing circuit can effectively
function only once per 30 minutes.
6-2-8 Horizontal Linearity
CONDITIONS
Scanning Frequency: 68 kHz/85 Hz
Display image: Crosshatch pattern
Adjust the H_Lin setting to correct the Linearity of
the display.
Linearity formula
6-2-9 Vertical Linearity
Table 6-1. Linearity Spec.
Mode Entire Adjustment
Preset Mode 10 % 4 %
Other Mode 14 % 5 %
MAX – MIN
MAX + MIN
X 100 = %
Refer to 6-2-8 Horizontal Linearity adjust the
V_Lin balance setting to correct the linearity of the
display.
6-2-10 Save the Data and Delete the User
Mode Data
After adjustment, press Factory Save and Delete
the User Mode.
6-4 SyncMaster 1000s (CGP1607L)