Pressure Control - Graco LineLazer IV 3900 Series Repair Parts List Manual

Removal
1. Relieve pressure, page 7.
2. Fig. 13. Remove two screws (125) and cover (31).
3. Pull display connector wings (A) open on PC board
and pull display connector out.
4. Disconnect ON/OFF switch connector (B) from PC
board.
5. Press in on two retaining tabs on each side of
ON/OFF switch (15g) and remove switch.
15o
ENGINE
Fig. 13

Pressure Control

On/Off Switch
15r
GROUND
ti6408a
Installation
1. Install ON/OFF switch (15g) so tabs of switch snap
into place on inside of pressure control housing.
2. Connect ON/OFF switch connector (B) to PC
board.
3. Push display connector into PC board close dis-
play connector wings (A) on PC board.
4. Install cover (31) with two screws (125).
A
C
15d
15j
31
125
Transducer
15g
15n
15i
B
Main Control
Box Cable
216
217
311020
D
17