Ricoh Pro 8300S - 373-01: ID Sensor Pattern Density High Error (K); 374-01: ID Sensor Pattern Density Low Error (K)

1.SC Codes
67
Inspect and reconnect the ID sensor (SEN92) connector.
2. Replace the ID sensor (SEN92).
3. Replace the ID sensor (SEN92) harness if it is damaged.
SC373-01, SC374-01
Error Name
 373-01: ID Sensor Pattern Density High Error (K)
 374-01: ID Sensor Pattern Density Low Error (K)
Pattern
D
Error Condition
 373-01: This error is detected when the amount of toner on the image transfer belt when
transferring an ID pattern (half-tone) during printing is greater than the threshold value (equivalent
to a solid fill image).
 374-01: This error is detected when the amount of toner on the image transfer belt when
transferring an ID pattern (half-tone) during printing is lower than the threshold value (equivalent to
a non-image).
Major Cause
 There are foreign particles on the surface of the ID sensor (SEN92).
 ID sensor (SEN92) is not connected properly.
 Image transfer belt is wavy, or there is belt skew.
 ID sensor (SEN92) is defective.
 ID sensor (SEN92) harness is damaged.
 Parts of the toner supply unit are defective.
 A number of abnormalities are detected from the ITB unit.
Solution
1. Check the surface of the ID sensor
Remove the ITB unit. Check if there is foreign objects, such as paper, on the surface of the ID
sensor. Then perform process control.
2. Check whether the ID sensor (SEN92) is properly connected.
Inspect and reconnect the ID sensor (SEN92) connector.
3. Check the image transfer belt
Remove the ITB unit. Check if there are abnormalities on the image transfer belt. Repair or replace
the image transfer belt if necessary, and then perform process control (SP3-011-002).
4. Replace the ID sensor (SEN92).
5. Replace the ID sensor (SEN92) harness if it is damaged.