Ricoh D127 Field Service Manual page 165

No.
Definition
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.
Development bias error
The maximum rate of PWM duty (50%)
391 B
occurs 10 times in series (20msec x 10)
This error doesn't happen when the front
door (the inter lock) opens.
Developer initialization error
The P sensor does not detect a correct
pattern during developer initialization
392 B
(SP2-801-001).
When Vsp output is more than 2.5V, SC
appears in the case of not removing the
heat seal or an absence of developer.
Symptom
SC391
RTB 38: Corrected
Possible Cause
• Defective the T sensor
• Bad contact of the connector to the T
sensor
• Defective T sensor
• Loose connection part
• Defective the MD
• Defective harness connected to the
HVP
• Defective P sensor
• Defective T sensor
• NOT removing heat-seal
• Defective drum operation
• Defective development roller
operation
SC Tables
163