Ricoh MP C6502SP Field Service Manual page 1069

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Error Name/Error Condition/Major Cause/Solution

Potential sensor output high error (K)

Potential sensor output high error (C)

Potential sensor output high error (M)

Potential sensor output high error (Y)

Vd(700) greater than 800[-V]

In Vd detection, which is done at the beginning of process control, the

measured potential (Vd) is converted to the potential when -700 V is

applied to the drum (Vd700) and used to check the potential sensor.

Potential sensor dirty (foreign object, such as toner, entering the probe

window) / potential sensor probe connector disconnected / potential

sensor probe defective.

• Use a blower brush to clean the window of the potential sensor

probe, then check the sensor again.

• Disconnect and reconnect the potential sensor probe connector,

then check the sensor again.

• Disconnect and reconnect the harness connecting the potential

sensor board and potential sensor probe, then check the sensor

• If this does not solve the problem, replace the potential sensor

Error Name/Error Condition/Major Cause/Solution

Potential sensor output low error (K)

Potential sensor output low error (C)

Potential sensor output low error (M)

Potential sensor output low error (Y)

Service Call 300-398

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