Ricoh FW830 Service Manual page 15

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ELECTRICAL COMPONENT DESCRIPTIONS
Name
Fusing
Pre-Transfer
(PTL)
Power Packs
Charge/Bias/Grid
Power Pack
Transfer/
Separation
Thermistors
Hot Roller
Pressure Roller Monitors the pressure roller's surface
Exposure Lamp Monitors the fluorescent lamp's temperature.
Thermofuses
Fusing
Exposure Lamp Protects against exposure lamp overheat.
Heaters
Exposure Lamp Warms the scanning lamp.
Anticondensa-
tion
Others
Total Counter
Noise Filter
Transformer
Development
Motor Capacitor
Main Motor Ca-
pacitor
Circuit Breaker
Provides heat to the fusing unit.
Reduces the charge on the drum surface prior
to image transfer.
Provides high voltage power for the charge
corona, charge grid, and development bias.
Provides high voltage power for the transfer
corona and separation.
Monitors the hot roller's surface temperature.
temperature.
Protects against fusing overheat. (Two
thermofuses in parallel.)
Keeps moisture from forming inside the copier.
Keeps track of the total length of copies made.
Filters electrical noise on the ac power input
lines.
Steps down the line voltage to 100 Vac.
Motor start capacitor.
Motor start capacitor.
Guards against voltage surges in the input
power.
Function
1-12
31 December 1992
Index. No.
53
31
49
54
56
58
44
59
44
44
47
66
62
69
2
3
61

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