Ricoh D127 Service Manual page 173

No.
Definition
High-voltage charge error
The maximum rate of PWM duty
(50%) occurs ten times in series
302 B
(20msec x 10)
This error doesn't happen when the
front door (the inter lock) opens.
P sensor error
SC350~354 happen on normal
355 D
operation. This error isn't displayed
on panel but left on the history as a
logging data.
T sensor error warning
Detected the following value
389 D
T sensor output value < 0.2V
T sensor output value > 4.0V
10 times in series.
T sensor error
After SC389 detection and
executing SP2-992-001, This SC is
displayed.
390 B
In process flow, This SC occurs
when two times of T sensor output
value error are detected
consecutively.
SM
Symptom
6-7
Possible Cause

Defective the MD

Defective harness connected to
the HVP

Disconnection of the harness to
P sensor

Bad electrical contact of P
sensor CN

Defective the BICU

Defective the writing section

Defective developer density

Defective high-voltage PP

Uncleanness of the P sensor

Defective the P sensor

Defective the T sensor

Bad contact of the connector to
the T sensor

Defective T sensor

Loose connection part
SC Tables
D127/D128