Service manual

PN 4237242C
4.14-1
SERVICE AND REPAIR PROCEDURES
VACUUM SENSOR CARD
4
4.14 VACUUM SENSOR CARD
Tools/Supplies Needed
B Needle-nose pliers
B #2 Phillips-head screwdriver
Removal
1. Turn OFF the instrument’s power.
2. Disconnect the ac power cable.
3. Open up the lower chassis as directed under Heading 4.4 and locate the Vacuum Sensor
card (Figure 4.4-1). It is preferable to open the chassis door a full 90 degrees.
4. Remove the card by pulling it off the three snap-on posts, Figure 4.14-1, and out of the
lower chassis as far as the wires and tubing will allow. The card snaps onto three snap-on
posts.
Figure 4.14-1 Vacuum Sensor Card
ELECTRICAL
CONNECTIONS
LV1
LV2
PRESSURE
TRANSDUCER
PORT (P2)
7242039A
TO FF9-1
TO FF10-1
VACUUM
SENSOR
CARD
C