Major Functions; Reference Diagram - Brother HL-4200CN Service Manual

5.4 Front ASSY In
5.4.1

Major functions

• Holder ASSY CTD
Reads the density of the toner image prepared on the surface of transfer roll cartridge
in the transfer roll cartridge unit ASSY (refer to "5.7 Transfer Roll Cartridge ASSY &
Fuser") and feeds it back to the process control (refer to "7.4 Process Control").
• Sensor TNR full
Detects that the toner collect space in the transfer roll cartridge unit ASSY (refer to
"5.7 Transfer Roll Cartridge ASSY & Fuser") has become full of waste toner to be
collected.
• Fuser drive ASSY
Supplies the drive to the fuser ASSY (refer to "5.7 Transfer Roll Cartridge ASSY &
Fuser").
5.4.2

Reference diagram

HOLDER ASSY CTD
FUSER ASSY
SENSOR TNR FULL
FUSER DRIVE ASSY
Fig.3-37
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