Canon NP6012 Service Manual page 74

SSS aaa Sa OF A ATIONS AND TIMING
G. Developing
Assembly/Cleaning
Assembly
1. Outline
The developing assembly is locked or The developing assembly and the waste
teleased manually by operating the locking toner feeding blade are driven by the drive of
lever. the main motor (M1) transmitted by the drive
The primary charging roller is cleaned by gear. The waste toner scraped by the clean-
the cleaning pad operated by the cleaning ing blade is forwarded inside the drum unit
solenoid. by the toner feeding blade for collection.
The level of toner inside the developing
assembly is monitored by the toner antenna.
DC controller PCB
Main motor drive signal
(MMD)
Toner level
signal {TNMONI)
Composite power supply PCB
Toner level
detection PCB
(MMD)
Cleaning blade drive signal (CSLD)
Main motor drive
signal
Waste toner detection signal
(TNFULL)
PSS"
Waste toner
sensor
TTS |
PGP PCB
model with automatic
indication of drum unit
Drum unit
Developing
T :
"
assembly
Cleaning blade
oner antenna
Waste toner feeding blade
Figure 3-313
COPYRIGHT © 1995 CANON INC. CANON NP6012/NP6DI2F /NP6212 REV.1 SEPT. 1995 PRINTED IN JAPAN ((MPRIME AU JAPON) 3-29