Table 2-1. Troubleshooting - Continued
TEST OR INSPECTION
(4). Unscrew BIAS control locking knob from BIAS control shaft and remove.
(5). Remove five screws (fig. 2-22) securing edge-lighted panel to control panel.
Figure 2-23. Removal of edge-lighted panel.
(6). Using orangewood sticks, lift edge-lighted panel (fig. 2-22) off control panel.
(7). Unsolder the electrical leads (fig. 2-23) from the defective switch or control and tag for iden-
Figure 2-24. Removal of MODE SELECT switch or theodolite bright control.
(8). Remove the attaching parts securing the switch or control to the panel assembly and remove
(9), Install new switch or control in panel assembly and secure with attaching parts. Connect and
solder electrical leads to switch in accordance with the identification tags on the electrical leads.