Service manual

Chapter 2
2-27
F-2-41
2.3.7 Secondary Transfer Mechanism
2.3.7.1 Outline
0008-1716
The transfer unit has a function of secondarily transferring the toner transferred primarily on the ITB onto paper.
The unit is structured with the secondary transfer roller and engaging lever, which are operated by the main motor drive.
The secondary transfer roller rotates by the motor drive. The engaging lever performs an engaging operation between the secondary transfer roller and ITB in roller
engaging control.
Stirrer
Light
emitter
Light
receiver
Waste toner
transport plate
DCNT Board
Light
receiver
Light
emitter
WASTETONER FULL DETECTIONsignal
(WASTONS)
LED DRIVE signal
(P3.3V)
Waste toner
detection circuit
<Low waste toner level>
<High waste toner level>
Light guide