HP laserjet 1018 서비스 매뉴얼
PR1
TRS
DEV
IC902
CPU
DVAC
TRNDC
TRCRNT
TRPDC
PRAC
PRPWM
IC301
IC301
IC301
IC301
IC501
Positive voltage
generation circuit
J303
J304
J301
J302
DC voltage
generation
circuit
AC voltage
generation
circuit
DC voltage
generation
circuit
AC voltage
generation
circuit
Combined
Combined
Primary
charging roller
Developing
cylinder
Transfer
charging
roller
Engine controller PCB
High-voltage power supply circuit
Developing bias circuit
Transfer charging bias circuit
Negative voltage
generation circuit
Photosensitive
drum
Primary charging bias circuit
J201-14
J902-10
J201-15
J902-9
J201-16
J902-8
J201-18
J902-6
J201-17
J902-7
J201-22
J902-2
Power supply PCB
Figure 4-4
High-voltage power supply circuit
Image-formation system
Laser printing requires the interaction of several different technologies, including electronics, optics,
and electrophotographic, to provide a printed page. Each process functions independently and must
be coordinated with the other printer processes. Image formation consists of seven processes, which
are described in the following section.
and electrophotographic, to provide a printed page. Each process functions independently and must
be coordinated with the other printer processes. Image formation consists of seven processes, which
are described in the following section.
ENWW
Printer functions
45