Ricoh A250 Service Manual page 50

ELECTRICAL COMPONENT DESCRIPTIONS
Symbol Name
Others
Fusing Thermofuse
TF1
TH1 Fusing Thermistor
C/B/T Power Pack
PP1
Laser Synchronization
LSD 1
Detector
Total Counter
CO1
Key Counter (Option)
CO2
LED1 Exit Tray
1-bin Sorter
LED2
SP1 Speaker
A250
Function
Opens the fusing lamp circuit if the fusing
unit overheats.
Detects the temperature of the hot roller.
Provides high voltage for the charge,
development and transfer rollers.
Detects the laser beam at the start of the
main scan.
Keeps track of the total number of prints
made.
Used for control of authorized use. If this
feature is enabled for coping, coping will be
impossible until it is installed.
Indicates if there is paper on the exit tray.
Indicates if there is paper on the 1-bin
sorter. 1-bin sorter is option.
Turns on during fax communication.
1-10
Index No.
9
11
38
29
48
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32
34
41
SM