Ricoh A229 Service Manual page 49

Symbol
PCB9 Interface
PCB10 Paper Feed Control
Board (PFB)
PCB11 Operation Panel 1
PCB12 Operation Panel 2
PCB13 LCD Control
PCB14 By-pass Paper Size
PCB15 Mother (Option)
PCB16 Printer Control
(Option)
Lamps
L1 Exposure Lamps
L2 Fusing Lamp 1
L3 Fusing Lamp 2
L4 Quenching
Power Packs
PP1 Charge
PP2 Development
PP3 Transfer
Others
TF1 Fusing Thermofuse
TH1 Fusing Thermistor
H1 Optics Anti-
Condensation
H2 Drum
H3 Tray Heater 1
H4 Tray Heater 2
SM
Name
Passes signals and dc supplies from
the PSU and IOB to motors and other
components.
Controls the mechanical parts of all
paper feed sections.
Controls the components on the right-
hand side of the operation panel.
Controls the components on the left-
hand side of the operation panel.
Controls the LCD.
Detects the paper width on the by-
pass tray.
Connects the printer control board.
Receives print data from a PC.
Apply high intensity light to the original
for exposure.
Provides heat to the hot roller.
Provides heat to the hot roller.
Neutralizes any charge remaining on
the drum surface after cleaning.
Provides high voltage for the charge
corona wires and the grid plate.
Provides high voltage for the
development unit.
Provides high voltage for the transfer
belt.
Opens the fusing lamp circuit if the
fusing unit overheats.
Detects the temperature of the hot
roller.
Turns on when the main switch is off
to prevent moisture from forming on
the optics.
Turns on when the main switch is off
to prevent moisture from forming
around the drum.
Turns on when the main switch is off
to keep paper dry in the paper tray.
Turns on when the main switch is off
to keep paper dry in the paper tray.
1-19
Function
Index
No.
64
58
31
34
33
101
54
55
15
86
85
89
87
56
93
84
83
16
63
62
60
A229