Appendix B: G2 adjustment
B-1
5975537 RETROGRAPHICS 808s 060197
B
G2 ADJUSTMENT
Once the on-screen menu "G2 ADJUSTMENT" is displayed, proceed
as follows :
G2 ADJUSTMENT
<EXIT> to return
Use the potentiometers
on the G2-ADJ. module
to set the screen grid
voltage for Red,
Green and Blue.
Adjust until the LED
on the corresponding
output amplifier is
turned off.
891
- Put the projector in service position 2 (see chapter 'AC power
Connection')
- A green LED is mounted on each driver unit. When selecting the
G2 adjustment menu, these green LEDs must be out. If not, follow
the next procedure to adjust the G2 :
- open the second metal cover by turning out the retaining screws on
both sides and pivot the cover to the front side of the projector;
- adjust the G2 potentiometers very slowly with a screwdriver until the
corresponding LED just stops illuminating. Repeat the adjustment
for the other colours;
- once the three G2 potentiometers have been correctly adjusted,
close both metal covers and secure with the retaining screws.
Green LEDs
Red
Green
Blue
2
3
After finishing the adjustments :
Press the
ENTER
to continue with the
"SERVICE"
menu.
Press the
EXIT
to
return to the
"SERVICE"
menu.
Press the
ADJUST
to return to Operational mode.
