promethean PRM-30A Service Manual page 17

Mechanical Disassembly
b Optical Unit and Duct Assembly removal
1. Remove  screws A(T3x8) to remove the Holder.
. R emove  screws B(T3x1) and 5 screws C(T3x8) and remove the Optical
Unit upward off.
3. Remove 9 screws D(T3x8) and remove the Duct Ass'y upward off.
SW901
Lamp Cover
Switch
T3x1
Panel Duct
Bottom
FN904
FN903
T3x30 T3x30 T3x1
d
d
d
d d d
Duct Ass'y
T3x8
Temp Sensor 1
Board
FN90
T3x30
T3x1
T3x30
C
d
d
d
FN901
-17-
A
A
Holder
B
B
C C
C
C
Optical Unit
Fig.5