Fluke Calibration 4322-SYS-NAVAIR, Service Manual

Page: 75 / 186

Controller Maintenance
Controller Part Replacement
4
4-23
1
2
3
4
5
6
Tilt display forward to
access hinge screws
hbx070.eps
Figure 4-10. Display Assembly
Keypad, Encoder, or Encoder Wheel
Use the following instructions and reference Figure 4-11 to replace the keypad (

),
encoder (

), or encoder wheel (

):
To replace the keypad (

):
1. Use the instructions in “Chassis and Control Panel” on page 4-9 to remove the
chassis and take off the control panel.
2. Lift off the encoder wheel (

) from the encoder (

) by prying upward with
screwdriver.
3. Remove the nut and washer from the encoder (

) using a nut driver.
4. Remove the eight screws (

) that secure the keypad (

) to the control panel (

).
5. Remove the keypad and put the new keypad in the control panel.
6. Install the eight screws (

) that secure the keypad (

) to the control panel (

).
7. Install the nut and washer on the encoder (

) using a nut driver.
8. Push on the encoder wheel (

) onto the encoder (

).
9. Use the instructions in “Chassis and Control Panel” on page 4-9 to install the control
panel and put the chassis back into the case.
To replace the encoder (

) or encoder wheel (

):
1. Use the instructions in “Chassis and Control Panel” on page 4-9 to remove the
chassis and take off the control panel.
2. Disconnect the wire (not shown) from the encoder (

).