• Code: SC383
• Description: Vpl adjustment error (exposure potential does not reach the target within 40 trials) Type: 5 - Description - The main control board notifies the SCU when Vpl does not come within ±5 V of the target after 40 trials in the Vpl check mode during the potential control process. - Detection Timing - During the process control self check
• Causes: • LD control board • Main control board SP-Log: 7-402-3 Vpl is the voltage on areas of the drum exposed by the laser at the testing intensity. This is done during the process control self check.

• Code: SC384
• Description: LD writing error (the response from the 12th grade of the pattern is out of range) Type: 5 - Description - The main control board notifies the SCU when the potential is out of tolerance (0 < V12 < 300) at the creation of the potential control pattern (12th grade). - Detection Timing - During the process control self check
• Causes: • LD control board • Main control board SP-Log: 7-402-3

• Code: SC385
• Description: ID sensor initial adjustment error (Vsg adjustment error) Type: 3 - Description - The main control board notifies the SCU when the Vsg adjustment is repeated three times and the Vsg value read by the ID sensor is out of the specified range (4.0 ±0.1 V). - Detection Timing - During the process control self check
• Causes: • ID sensor • Main control board SP-Log: 7-402-3

• Code: SC386
• Description: Vmin abnormal Type: 5 - Description - The main control board notifies the SCU when Vmin for black is out of range (between 0.01 V and 0.20 V) and Vmin for color is out of range (between 1.5 V and 2.2 V) at the creation of the 12-grade patterns during process control. - Detection Timing - During the process control self check
• Causes: • LD control board • Main control board SP-Log: 7-402-3

• Code: SC387
• Description: Potential control Vsg (Vsg_ave) abnormal Type: 5 - Description - The main control board notifies the SCU when the average of the Vsg readings (Vsg for potential control) taken by the ID sensor in one drum rotation is out of the specified range (4.0 ±0.3 V). - Detection Timing - During the process control self check - Possible Causes - • LD control board
• Causes: • Main control board SP-Log: 7-402-3

• Code: SC388
• Description: Toner control Vsg (Vsg_ptn) abnormal Type: 5 - Description - The main control board notifies the SCU when the average of the Vsg readings (Vsg for toner supply control) taken by the ID sensor at the three points on the drum is out of the specified range (between Vsg_ave –0.2 V and Vsg_ave +0.4 V). - Detection Timing - During the process control self check
• Causes: • ID sensor • Main control board SP-Log: 7-402-3

• Code: SC400
• Description: Belt transfer charge abnormal Type: 2 - Description - The main control board notifies the SCU that the belt transfer charge output from the high voltage power pack does not reach the target due to such causes as a leak or power pack failure. - Detection Timing - When the belt transfer charge is active
• Causes: • High voltage power supply • Leak locations SP-Log: 7-402-4

• Code: SC440
• Description: Main motor abnormal Type: 2 - Description - The main control board notifies the SCU when the main motor does not start up within a predetermined period of time or does not output the LOCK signal for more than a predetermined period of time during the rotation. - Detection Timing - During the rotation of the main motor
• Causes: • Main motor • Main control board SP-Log: 7-402-4