BenQ SX930, Service Manual

Page: 103 / 175

103
5.3 Module Assembly Key Point - Optical Engine
1. Light Pipe Module assembly and overfill alignment
1.1 Assembly LP Module to HSG DMD
i. Assembly two Overfill adjustment screws (M3) to HSG DMD (Fig. 1-1).
** Adjustment criteria refer to below item 1.2 & (Fig. 1-2).
ii. Press CLIP of BKT LP first and push it into the hole (Fig. 1-3).
iii. Hook Clip LP to HSG DMD, and lock with screw well. (Fig. 1-4)
iv. Placed LP Module on LP datum of “DMD HSG” and adjustment screw well (Fig. 1-5).
v. Assembly “Baffle LP”, Hook top of Baffle LP first (Fig. 4-10) & Hook bottom of Baffle LP to
HSG DMD well (Fig.1-7).
1.2 Overfill Adjustment @ LP Module
Overfill Adjustment Criteria:
i. Pre-assembly 2 adjusting screws. Criteria shown as (Fig.1-4)
ii. Alignment Sequence:
A. To adjust “Horizontal Adjustment Screw” firstly, and then “Vertical Adjustment
Screw”.
B. Refer to (Fig. 1-4)
1.3 For Overfill Re-adjustment:
a. Those 2 Adjustment Screws must be released closely to the “Pre-assembly”
positions first (Fig. 1-4)
b. Follow adjustment steps shown in Item 1.2-ii.
Fig. 1-1
Overfill Vertical
Adjustment Screw M2
Overfill Horizontal
Adjustment Screw M2