Code :

Code: SC792
Description: Projector lamp overheat - Definition - [C] The projector control board detects a lamp overheat condition through the thermistor.
Causes: • Projector lamp regulator defective • Thermistor defective

Code: SC900
Description: Bk-total counter not on - Definition - [B] The Bk-total counter does not turn on.
Causes: • Bk-total counter defective • DC power supply board defective (FU803, FU804)

Code: SC901
Description: Bk-total counter not off - Definition - [B] The Bk-total counter does not turn off.
Causes: • Bk-total counter defective

Code: SC902
Description: FC-total counter does not turn on - Definition - [B] The FC-total counter does not turn on or off.
Causes: • FC-total counter defective

Code: SC903
Description: FC-total counter does not turn off - Definition - [B] The FC-total counter does not turn on or off.
Causes: • FC-total counter defective

Code: SC910 ... SC917
Description: SC910: ACC Calculation Error (Letter Mode: Bk) SC911: ACC Calculation Error (Letter Mode: C) SC912: ACC Calculation Error (Letter Mode: M) SC913: ACC Calculation Error (Letter Mode: Y) SC914: ACC Calculation Error (Photo Mode: Bk) SC915: ACC Calculation Error (Photo Mode: C) SC916: ACC Calculation Error (Photo Mode: M) SC917: ACC Calculation Error (Photo Mode: Y) - Definition - [D] Even if the test pattern has been scanned in, the CPU on the IPU could not find the appropriate adjustment table to approximate the actual curve to the target gamma curve.
Causes: • IPU defective

Code: SC920
Description: ACC not performed (internal error) - Definition - [D] Under any of the following conditions, the ACC will not performed. 1) Process Control self-check error, ID sensor error, Drum potential sensor error, Potential control error. 2) When an SC occurs while the ACC test pattern is printed. 3) When the TD sensor output (Vt) value becomes lower than 2.5 ± 1.0 V.
Causes: • The actual printer gamma curve changed over a big range (caused by process control self-check). • Main Control Board defective