• Code: CE80
• Description: Communication error between the LGC board and the LED printer head
• Causes: LGC board Flat cable Harness (power supply) LED printer head
• Remedy: 1 Check the value of the selfdiagnosis code (FS-08-4706) in which is displayed in the details of the LED printer head communication error. • Check each color with its corresponding self-diagnosis mode. Y: FS-08-4706-0 M: FS-08-4706-1 C: FS-08-4706-2 K: FS-08-4706-3 Remarks: The self-diagnosis value other than "0" (Normal) indicates that an error has occurred. Self-diagnosis values 1, 5, 9 and 13: LED printer head unconnected error 2 Self-diagnosis values 2, 6, 10 and 14: LED printer head mix error 4 Self-diagnosis values 4, 8 and 12: Checksum mismatch / Gradation module error 2 Self-diagnosis values other than the above 2 2 Is the LGC board normal? • Check the connectors used for the colors in which errors have occurred. Y: CN357 and CN359 M: CN356 and CN358 C: CN331 and CN332 K: CN329 and CN330 • Check the LGC board. 3 Check if the harnesses between the LGC board and the LED printer head are disconnected or open circuited. • Check the connectors and the harnesses used for the colors in which errors have occurred. <Flat cable at the LGC board side> Y: CN357 M: CN358 C: CN331 K: CN329 <Harness (power supply) at the LGC board side> Y: CN359 M: CN358 C: CN332 K: CN330 <Flat cable at the LED printer head side> Y: CN788 M: CN790 C: CN792 K: CN794 <Harness (power supply) at the LED printer head side> Y: CN787 M: CN789 C: CN791 K: CN793 Yes 4 No Repair it. 5 4 The LED printer head used for the colors in which errors have occurred. Repair it. 5 5 Reset the self-diagnosis value. Change the setting value of the LED printer head communication error details to "0" (Normal) to reset the selfdiagnosis value. Y: FS-08-4706-0 M: FS-08-4706-1 C: FS-08-4706-2 K: FS-08-4706-3

• Code: CE81
• Description: Interface initialization error between LED printer head and LGC board
• Causes: LGC board Harness of LED printer head (flat cable) Harness of LED printer head (power supply) LED printer head
• Remedy: 1 Perform FS-08-4723 to identify the color of LED printer head in error. 0 bit: Y 1st bit: M 2nd bit: C 3rd bit: K Remarks: The value of each bit becomes "1" if error occurs. (e.g.) Y color: 1, M color: 2, C color 4, K color: 8, Y and K color: 9 2 2 Is the LGC board normal? - Check the connectors of the LED printer head identified in step 1. Y color: CN356 and CN358 M color: CN356 and CN358 C color: CN331 and CN332 K color: CN329 and CN330 - Check the LGC board. Yes 3 No Repair or replace it. 3 Check the harnesses between the LGC board and the LED printer heads. Check the connectors and harnesses of the color in error. <Harness (flat cable) - LGC board> Y color: CN357 M color: CN358 C color: CN331 K color: CN329 <Harness (power supply) - LGC board> Y color: CN359 M color: CN358 C color: CN332 K color: CN330 <Harness (flat cable) - LED printer head> Y color: CN788 M color: CN790 C color: CN792 K color: CN794 <Harness (power supply) - LED printer head> Y color: CN787 M color: CN789 C color: CN791 K color: CN793 Yes 4 No Replace it. 4 LED printer head in error Replace it.

• Code: CE90
• Description: Drum thermistor abnormality: The output value of the drum thermistor is out of a specified range.
• Causes: Drum thermistor LGC board
• Remedy: Drum thermistor Connector and harness check of drum thermistor LGC board • Check the harnesses between the LGC board and the drawer connector for developer unit. • Connector check (CN360)

• Code: CF10
• Description: Communication module writing failure.
• Causes: Finisher control PC board (FIN) LGC board
• Remedy: Finisher • Check if the harness connecting the equipment and the finisher control PC board is disconnected or open circuited. • Check if the conductor pattern on the finisher controller PC board is open circuited or short circuited. • Update the finisher firmware. LGC board • Check if the harness connecting the finisher and the LGC board on the equipment is disconnected or open circuited. • Connector check • Check if the conductor pattern on the LGC board is open circuited or short circuited.

• Code: E010
• Description: Paper exit jam Paper Ejection Jam - Please Clear Paper Path. Paper not reaching the exit sensor jam
• Causes: Separation finger of the fuser unit Transfer belt Transfer belt unit Exit sensor LGC board
• Remedy: Paper jamming immediately after the removal and installation of the transfer belt unit. Transfer belt unit Check if the transfer belt unit is installed properly. "4.7.3 Transfer belt unit (TBU)" Paper jamming at separation finger in the Fuser Unit. Fuser unit Clean the separation finger. Check if the fingers or springs of the separation finger are securely attached. Replace the separation finger. Paper separation failure at separation finger in the Fuser Unit Fuser unit • Paper tranceport check Drawer Check that paper is not skewed in the side guides of the drawer. Leading edge margin Adjust the margin with FS-05-4402 (Leading edge position adjustment) to "Color: 5.5 mm". Widen the margin if needed. (Specification Black: 4.2 mm / Color: 5 mm) • Use A3/LD paper • It is easy to check skew with a copy of a solid image (about 10 mm on its leading edge). "[C] Secondary scanning data writing start position". Paper jamming at separation finger in the Fuser Unit. Fuser unit Clean the separation finger. Check if the fingers or springs of the separation finger are securely attached. Replace the separation finger. The leading edge of paper has no scratches and the paper stops before being fused. Fuser unit Check that the pressure release screw of the pressure roller is securely tightened and pressure is properly applied. Transfer belt Replace the transfer belt. Replace the transfer belt unit. Paper folded in one side and fused during duplex printing Check if toner adheres to the fuser entry guide. Clean it if needed. All Exit sensor • Sensor check (Perform the input check: FS-03- [ALL]OFF/[9]/[C]) • Connector check • Harness check LGC board • Board check • Connector check (CN342) • Harness check

• Code: E011
• Description: Other paper jam Paper Jam in Printer - Please Clear Paper Path. Transfer belt paper-clinging jam
• Causes: Process unit CFD board LGC board Paper clinging detection sensor Registration roller Replace it if it is worn out.
• Remedy: Paper jamming immediately after the removal and installation of the transfer belt unit. Transfer belt unit Check if the transfer belt unit is installed properly. "4.7.3 Transfer belt unit (TBU)" Paper stop jam at transfer belt Drawer Check if paper is folded at the leading edge. No scratches on the paper leading edge Drawer Check if paper is folded at the leading edge. Check that paper is not skewed in the side guides of the drawer. Process unit Clean the process unit or replace it. Paper clinging detection sensor Clean the sensor All CFD board • Board check • Connector check (CN405, CN408) • Harness check LGC board • Board check • Connector check (CN369) • Harness check Paper clinging detection sensor • Sensor check (Perform the input check: FS-03- [ALL]OFF/[9]/[E]) • Connector check (J824, J823, CN405) • Harness check Check of the 2nd transfer roller connection Check that the 2nd transfer roller shaft is securely grounded via the ADU rear frame (metal plate). • Check if the spring is deformed. • Check if the bearing and the spring contact properly. Change of the 2nd transfer bias If the leading edge of paper clings to the 2nd transfer roller and causes paper jamming, change the 2nd transfer roller bias correction factor of the leading/trailing edge of the paper. (The larger the value, the smaller the transfer voltage of the leading/trailing edge of the paper.) Codes to be changed (Initial value of the transfer bias of the leading edge of the paper: 0) • Color mode print (top side): FS-05-2938-* • Color mode print (back side): FS-05-2939-* • Black mode print (top side): FS-05-2940-* • Black mode print (back side): FS-05-2941-* Sub codes:* -> Plain paper: 0, Thick paper 1: 1, Thick paper 2: 2, OHP: 4, Special paper 1: 5, Special paper 2: 6, Recycled paper: 7, Envelope: 10 Notes: After these codes are changed, perform solid duplex-printing and check that there is no faint or void image on the leading/trailing edge of the paper.

• Code: E013
• Description: Other paper jam Paper not reaching the transport sensor after a registration jam
• Causes: Rollers Developer unit CFD board LGC board Registration clutch Registration roller Replace it if it is worn out. Registration sensor Registration pass sensor
• Remedy: Paper stop jam at Registration roller Drawer Check if any damage is at the leading edge. Check if paper is folded at the leading edge. Drive unit, Rollers • Drive unit check • Gear check • Roller check Developer unit Replace the Developer unit. CFD board • Board check • Connector check (CN404) • Harness check LGC board • Board check • Connector check (CN367, CN351) • Harness check Registration sensor • Sensor check (Perform the input check: FS-03- [ALL]OFF/[9]/[A]) • Connector check (CN404, J791) • Harness check Registration pass sensor • Sensor check (Perform the input check: FS-03- [ALL]OFF/[9]/[F]) • Connector check (CN351) • Harness check

• Code: E020
• Description: Paper exit jam Paper Ejection Jam - Please Clear Paper Path. Paper stopping at the exit sensor jam
• Causes: Separation finger of the fuser unit Exit sensor LGC board
• Remedy: Paper jamming at separation finger in the Fuser Unit. Fuser unit Clean the separation finger. Check if the fingers or springs of the separation finger are securely attached. Replace the separation finger. Paper separation failure at separation finger in the fuser unit Fuser unit • Paper tranceport check Drawer Check that paper is not skewed in the side guides of the drawer. Leading edge margin Adjust the margin with FS-05-4402 (Leading edge position adjustment) to "Color: 5.5 mm". (Specification Black: 4.2 mm / Color: 5 mm) • Use A3/LD paper • It is easy to check skew with a copy of a solid image (about 10 mm on its leading edge). "[C] Secondary scanning data writing start position". Scratches on the leading edge of paper Check if toner adheres to the exit gate. Clean it if needed. All Self-diagnosis code Change the setting value of FS-08-4542 (Switching for incorrect size jam detection) from ¡§1¡- (Disabled) to ¡§0¡-(Enabled). Exit sensor • Sensor check (Perform the input check: FS-03- [ALL]OFF/[9]/[C]) • Actuator check • Connector check • Harness check LGC board • Board check • Connector check (CN342) • Harness check