Ricoh A172 - Page 42

Symbol Name Function Index No.
PCB23
Operation Panel
Control
Controls the operation panel.
24
PCB24
IPU Processes R/G/B video signals from the
scanner control board and sends Y/M/C/Bk
video signals to the LD unit.
2
PCB25
IPU interface Changes the clock frequency of R/G/B video
signals and also sends the synchronizing
signal for the polygon motor.
4
PCB26
LD drive Generates the laser beam for printing the
latent image on the drum.
5
PCB27
Laser synchronizing
detector
Detects the laser beam to control the start
timing of main scan writing.
66
PCB28
Paper width detecting Detects paper width in the by-pass feed
table.
128
PCB29
Wire cleaner drive Controls ths corona wire cleaner operation.
16
Motors
M1
Bk - Development
drive
Drives the Bk dual mixing roller.
46
M2
C - Sleeve Turns the C sleeve roller in both directions.
31
M3
M - Sleeve Turns the M sleeve roller in both directions.
35
M4
Y - Sleeve Turns the Y sleeve roller in both directions.
34
M5
Drum Turns the drum.
28
M6
Bk - Sleeve Turns the Bk - sleeve roller in both directions.
30
M7
Transport Drives the transport unit, fusing unit, transfer
roller, and transfer belt cleaning unit.
45
M8
Color - Development
drive
Drives the Y/M/C dual mixing rollers
simultaneously.
27
M9
Cleaning Drives the drum cleaning brush, the lubricant
brush, and the transfer belt release
mechanism.
32
M10
Scanner Drives the 1st and 2nd scanners.
29
M11
Transfer belt Turns the transfer belt drive roller in both
directions.
33
M12
Paper feed Drives the paper feed sections and the cam
gear for the toner collection bottle.
39
M13
Polygon Turns the polygon mirror.
47
M14
Bk - Toner supply Drives the Bk toner transport and agitation
mechanism.
43
M15
C - Toner supply Drives the C toner transport and agitation
mechanism.
42
M16
M - Toner supply Drives the M toner transport and agitation
mechanism.
41
M17
Y - Toner supply Drives the Y toner transport and agitation
mechanism.
40
M18
1st tray lift Lifts the 1st tray bottom plate.
36
M19
2nd tray lift Lifts the 2nd tray bottom plate.
37
M20
3rd tray lift Lifts the 3rd tray bottom plate.
38
Overall Machine
Information
SM 1-15 A172/A199