Drum Thermoswitch And Heater Replacement - Ricoh FT7770 Service Manual

30 April, '89

2. Drum Thermoswitch and Heater Replacement

Before starting, note the locating tabs and cutouts [A] on the front and
rear drum heater flanges.
1. Turn off the main switch.
Remove the drum (refer to "Drum Replacement"); then, take out the
2.
drum guide.
Remove the front drum heater flange [B] (3 screws and 1 bracket).
3.
- Drum Thermoswitch Replacement -
a) Disconnect the leads from the two thermoswitch terminals.
b) Remove the thermoswitch bracket [C] (1 screw), and remove the old
thermoswitch [D] from the bracket (2 screws).
c) Install a new thermoswitch.
- Drum Heater Replacement -
a) Disconnect the connector [E] from the inside of the drum heater;
then, slide out the heater.
b) Install a new drum heater.
5-4