Service manual

PN 4237242C

4.16-1

SERVICE AND REPAIR PROCEDURES

SENSOR PREAMP ADAPTER (SPA) CARD

4.16 SENSOR PREAMP ADAPTER (SPA) CARD

Tools/Supplies Needed

B #1 Phillips-head screwdriver

Removal

1. Turn OFF the instrument’s power.

2. Open the lower chassis as directed under Heading 4.4 and locate the Sensor Preamp

Adapter card (Figure 4.4-1).

3. Disconnect the electrical connectors located at the rear of the Sensor Preamp Adapter

card. There are five connectors (Figure 4.16-1) and three coaxial cables.

Figure 4.16-1 Sensor Preamp Adapter (SPA) Card and Surrounding Components

7242040A

ELECTRICAL

CONNECTIONS

SENSOR

PREAMP

ADAPTER

CARD

ELECTRODE

CABLES

GROUND

SCREW

CABLE SHIELD

CARD SHIELD