20
(4) Replacing the power supply
Disconnect all cables connected to the main board.
Disconnect all cables connected to the 8-pin terminals of the power supply. Be sure
to record the wiring in advance.
(Sort the cables by terminal numbers for easy wiring.)
Remove the two screws from the bottom of the control unit and detach the power supply.
Attach a new power supply, wire the cables, and secure the terminals with screws.
Table 3 Power Supply Wiring
Terminal
No.
Number of
wires
Color Description
Connect
to
1
2
Orange
+ 5V
CN1 of the MAIN board
2 1 Black
Ground
Ground
point
3 2 Red
+
12
Ｖ
CN1 of the MAIN board
4 1 Black
Ground
Ground
point
5 1 White
-
12
Ｖ
CN1 of the MAIN board
6
1
Green
Frame ground
Ground point
7
1
Orange
AC100V-L
AC terminal board
8
1
Gray
AC100V-N
AC terminal board
5.2 Measuring Unit Parts Replacements
Be sure to record the wiring before replacing parts so that the wiring later can be
reconnected afterwards.
(1) Replacing the projector lamp
!
Caution: Do not apply strong force to the glass at the center
of the lamp, or the glass may break.
Remove screws from both sides of the lamp cover and detach the cover.
Hold the metal sections on both sides of the lamp, and lift the lamp to remove.
After replacing the lamp, reassemble the components in reverse order.
(2) Replacing the light receiver assembly
Remove the receiver cover to expose the light receiver assembly.
Disconnect the two-pin connector from the light receiver assembly (SP-PHOTO).
