Revision C 170 Series Monitor 7-47
2000947-004
Serviceable Assemblies: Servicing the Recorder
Replacing the Sensor Board
Equipment Required
Phillips screwdriver
Sensor board (part no. 15231)
Sensor board insulator (part no. 2000147-001)
Cable tie, x2 (part no. 608036)
Cable mount adhesive back, x2 (part no. 608030)
Procedure
1. Remove the AC line cord from the monitor to completely remove power.
2. Follow the instructions for “Removing the Monitor Top Cover” on page 7-19.
3. Follow the instructions for “Replacing the Main Board” on page 7-35.
4. Note the location of the printhead assembly relative to the notches on each side.
This is the nominal location for when it is replaced later. Remove the four
screws from the printhead assembly downstop plate and set aside.
5. Remove the three screws from the main board mounting plate and slide back
and out to remove.
6. Remove the two screws holding the drawer microswitch in place.
7. Snip the sensor board cable tie located on the monitor bottom panel.
8. Pull the recorder drawer forward slightly.
9. Snip the cable tie on the back of the recorder drawer.
10. Pull drawer forward and lift out.
CAUTION
LOOSE ROLLERS—The drawer rollers are normally held in
place by the drawer. Take care not to dislodge them while the
drawer is removed.
11. Turn drawer over and peel off the sensor board insulator.
12. Remove the four flathead screws securing the sensor board. Discard the board,
but retain the screws.
13. Insert the new board, secure all four screws, and cover with a new insulated
sheet.
14. Secure the sensor board cable with a cable tie on the back of the recorder
drawer.
15. Align the drawer over the slot, drop down, and slide into place.
16. Pull drawer fully foward to allow slack on the sensor board cable.
17. Secure the sensor board cable with a cable tie on the monitor bottom panel.