Printed circuit boards and sensors
GS Series 630-635 Service Manual
69
020-001224-02 Rev. 1 (08-2018)
Replacing the main board and I/O board
For DHD630-GS and DWU630-GS, only main board needs to be replaced.
To remove the main board
and I/O board, complete the following steps.
1. Remove the top cover.
2. Remove the rear IR board.
3. Remove the 11 M3 screws with a Phillips #1 screwdriver securing the top shielding.
4. On the top side of the main board, disconnect the 14 connectors, indicated by the arrows in the
image below.
A
B
C
D
E
F
G
H
I
J
K
L
M
N
