Ricoh A151, Руководство по обслуживанию на месте

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MAJOR DIFFERENCES BETWEEN THE A202/A203 AND
A151/A152.
The following table lists the major differences between the A202/A203 series
and the A151/A152 series. A "Model Cross Reference Table" can be found in
the Specifications Section of the service manual.
No. Item A202/A203 A151/A152
Process Control
1
Grid Voltage for
Image Density
Control Depends on the
Standard image density
grid voltage and the auto
image density factor. Depends on the factors
shown on the left, and
also the drum residual
voltage (V
R
) detection
factor.
2
Grid Voltage for
Toner Depends on the standard
ID sensor grid voltage. Depends on the standard
ID sensor grid voltage
and the drum wear
correction factor.
3
Drum Residual
Voltage (V
R
)
Detection and
Correction
The drum residual
voltage (V
R
) detection
and drum residual
voltage (V
R
) correction
have been eliminated.

4
Drum Wear
Correction The drum wear
correction has been
eliminated,

Optics
1
Optics Cooling
Fan The optics cooling fan is
installed for both A202
and A203 copiers. The optics cooling fan is
installed on the A152
copier only.
Development
1
Development
Bias Circuit The bias feed back circuit
is mounted inside the
power pack. The bias feed back signal
is sent from the power
pack to the main board to
control the development
bias voltage.
Toner Supply
1
Toner Supply
Mechanism A toner supply motor is
used to add toner to the
development unit. A toner supply clutch is
used to add toner to the
development unit.
SM 1 A202/A203