Brother HL-2600CN Service Manual page 253

4.3.7 TR Terminal Base ASSY / Interlock Switch (Rear)
1) Open the back door.
2) Remove the set screws ST3X6 (2 pcs.) to remove the TR terminal base ASSY from
the printer.
3) Disconnect the harness connector (1 pc.) connected to the interlock switch.
4) Remove the interlock switch from the TR terminal base ASSY.
Interlock switch
TR terminal base ASSY
Fig.7-57
CAUTION 
Since the interlock switch is an important safety item, after installation confirm that the
switch operates correctly.
VII-41