Service manual

PN 4237242C

4.18-1

SERVICE AND REPAIR PROCEDURES

PROBE MOTOR

4.18 PROBE MOTOR

Tools/Supplies Needed

B #1 Phillips-head screwdriver

Removal

1. Turn OFF the instrument’s power.

2. Open the lower chassis as directed in Heading 4.4, to expose the Probe/Wipe Traverse

Assembly.

3. Disconnect the probe motor and the flex cable. The probe motor is connected to J2 on

the Probe/Opto Sensor card (Figure 4.17-1).

4. Make sure the probe is in a vertical position. Move the traverse housing to the right end

of its travel. This aligns it with two probe motor access holes in the traverse mounting

bracket (Figure 4.19-1).

5. Remove the probe motor. It is fastened to the traverse housing with two Phillips-head

screws.

Installation

1. Install the replacement motor, making sure that the motor gear properly meshes with the

traverse rack.

2. Fasten the motor using the two Phillips-head screws. There are screwdriver access holes

at the right end of the traverse mounting bracket (Figure 4.19-1).

3. Connect the motor to J2 on the Probe/Opto Sensor card and reconnect the flex cable.

4. Close the upper chassis and turn ON the instrument’s power.

Verification

Perform an SVP (Heading 5.1).