Electrical Convergence Adjustment - Panasonic PT-EZ770Z Service Manual

SECTION 3 ADJUSTMENTS
1. 1. 2. Adjustment procedure
This adjustment should be taken in order of G-panel, R-panel, and B-panel.
1. Select the internal test pattern signal "All black" from the projector's menu "Menu -> Setting -> Test pattern".
2. Loosen each screw (C) on the polarizer fholder.
3 T urn the lever of G-polarizer to obtain the darkest brightness and proper black color uniformity on the screen.
4. Adjust for R-polarizing glass and B-polarizing glass continuously.
5. After finishing, Tighten the screws (C) to fix the polarizer.
* This adjustment should be taken in the dark room to adjust precisely.

1. 2. Electrical Convergence Adjustment

This is a function to correct a convergence by a pixel unit every R/G/B
ingredient.
Each pixel can be shifted in 1 dot and 2 dots maximum from right to left and
up and down.
1. Project cross-hatch pattern, confirm a position gap of R/G/B.
2. E nter the service mode, and select sub menu "CONVERGENCE" of
main menu "EXTRA OPTION".
3. Select a color to be adjusted.
4. P ress the ▲ ▼ button to adjust the vertical direction, press the t u
button to adjust the horizontal direction.
5. Adjustment is complete. Press the [MENU] button to exit the adjustment
mode. The setting value will stored this time.
C
Lever of polarizer
ADJ-3
C
C