Read Sharp MX-M850 (serv.man35) Service Manual online
MX-M1100 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 16
M. Heater
25
SUB PWB
Supplies power to the PIC PWB, MFPC PWB, W-ICU PWB, HDD, and scanner system PWB.
26
Driver PWB (paper exit)
Drives the paper exit system transport motor.
27
WH PWB
Controls on/off of the dehumidifying heater.
28
AC PWB
Controls the power on the primary side.
29
Option power
Supplies power for the option.
30
Main power
Supplies power to the PCU PWB, DSPF PWB, and driver system PWB.
31
Driver PWB (Paper feed)
Drives the paper feed system transport motor.
32
PIC PWB
Controls on/off of the SUB PWB and the MAIN PWB.
33
High voltage MAIN PWB
Outputs the main charger voltage, the developing bias voltage, the transfer voltage, and the
transfer belt cleaning voltage.
transfer belt cleaning voltage.
34
High voltage SUB PWB
Outputs the bias voltage for transfer cleaning brush.
35
AC terminal PWB
Interfaces the AC power for the option. (85 sheet model for Europe)
36
PCU-Flash PWB
PCU program ROM PWB.
37
MFPC-Flash PWB
MFPC program ROM PWB (2 pcs.)
38
DSPF-Flash PWB
DSPF program ROM PWB.
39
SCN-Flash PWB
Scanner program ROM PWB.
40
LSU PWB
Controls the LSU.
41
BD PWB
Detects the laser synchronous signal.
42
LD PWB
Controls lighting the laser. (4 beams)
43
High voltage PS PWB
Prevents against leakage of the transfer current.
44
DL PWB
Removes the photoconductor surface potential.
45
Process sensor PWB
Detects the toner density.
46
PTDL PWB
Suppresses the potential of paper surface which is not in contact with the photoconductor.
47
MFPC PWB
Controls the image-related items and controls all over the machine.
48
W-ICU PWB
Controls the image-related items.
Signal name
Name
Function / Operation
Note
WH1 DESK
Dehumidifying heater (Paper feed tray 1, 2)
Dehumidifies paper. (Paper feed tray 1, 2)
Option.
WH1 SCN
Scanner dehumidifying heater
Dehumidifies the scanner unit.
Option.
WH2 DESK
Dehumidifying heater (Paper feed tray 3, 4)
Dehumidifies paper. (Paper feed tray 3, 4)
Option.
No.
Name
Function / Operation
WH1 SCN
WH1 DESK
WH2 DESK
Click on the first or last page to see other MX-M850 (serv.man35) service manuals if exist.