• Code: 1-121
• Description: One or more blank pages are printed. When the printer turns on, several blank pages print.
• Causes: Video controller. 1. Defective engine board 2. Defective oscillator or CPU in video controller
• Remedy: 1. Perform the engine self test using DCU. If blank page prints, the engine board is defective. If the printer works normally, refer to next solution (2). If the engine board is defective, check the connectivity on the control board, CPU pin 23, and R33. 2. If blank page is prints once time or continuously, check that the video controller oscillates properly at 30.075 MHz. (Low ; less than 0.7V, more than ; 3.5V) 3. If black pages print continuously when the printer turns on, check the CPU and 4. replace if defective.

• Code: 1-130
• Description: Incomplete or missing characters.
• Causes: Video controller. 1. Port connections defective. 2. Defective oscillators in the Video Controller. 3. Defective CPU in the video controller
• Remedy: 1. Check that the port and related parts are properly connected and soldered. 2. Check the oscillators(30.075MHz, 40.0MHz) on the Video Controller. 3. Replace video controller CPU.

• Code: 1-140
• Description: When printing on xerographic paper from cassette, the printed image is diffused.
• Causes: Engine board. Defective the Fuser(Heat lamp) control circuit in the engine board.
• Remedy: Refer to solution 2-1 under Error Code 3-011.

• Code: 1-141
• Description: When printing on card stock or transparencies using manual feeder, the printed image is diffused.
• Causes: 1. Improper paper type menu setup 2. Engine board. 1. When printing on card stock or transparencies, higher transfer voltage is required. 2. Defective transfer voltage circuit in the engine board.
• Remedy: 1-1. Select ‘Thick Mode’ on paper type menu using panel or software application to print on card stock or transparencies. 1-2. Check the fuser control circuit. Refer to Solution 2-1 under Error Code 3-011. 2. Check the transfer voltage and adjust if necessary.

• Code: 2-010
• Description: Printing begins in wrong position on the paper.
• Causes: Feed sensor actuator, LSU, Pick-up ass’y, Bracket-dust, Solenoid, Video Controller. 1. Wrong sense time caused by a deformed feed sensor actuator. 2. Skew: Bad LSU-assembling Unbalance pressure of the Pick-up ass’y Defective mechanical parts 3. Top margin: Eearly feeding by the Solenoid Wrong OP1 sensor position Wrong Video Controller connectivity
• Remedy: 1. Replace the deformed actuator. 2. Reassemble or replace the LSU. Reassemble or replace the Pick-up ass’y. Reassemble or replace the defective mechanical parts. (fore example, Bracket-dust). 3. Replace the Solenoid Check OP1 Check the Video Controller or its connectivity

• Code: 2-020
• Description: 1. Recording paper does not feed into the printer. 2. Recording paper feeds, and ‘Jam 0’ occurs.
• Causes: Engine board. 1. If the paper does not feed into the printer, the feed clutch driving circuit in the engine board may be defective. 2. If the paper feeds into the printer and ‘Jam 0’ occurs, the feed sensor OP1 on the engine board may be defective.
• Remedy: 1. Check for the solenoid driving circuit using DCU diagnostic mode 06 a) Check for 24V on D1 cathode. If 24V is not present, check Q9. If Q9 is good, check Q6 and its related parts. If they work normally, check for 24V output from SMPS. b) Measure the feed clutch resistance. Replace if not approximately 60 ohms. c) Check Q4. If Q4 is OK, the collector and base should be 0V and 0.7V DC to GND, respectively. 2. Check Feed sensor OP1 and related parts. a) Replace Feed sensor actuator of defective. b) When OP1 sensor is blocked, CPU pin 46 should be over 3.5V. When sensor is not blocked, the pin should be below 0.7V. One side of R16 in OP1 transmitter should be 5V, and the other end 1.2V. If normal, check OP1 receiver. If not shorted, replace CPU.

• Code: 2-030
• Description: Recording paper jammed in the output area (inside the fuser), or multiple sheets of paper are fed at once.
• Causes: Engine board. 1. If the paper is stopped in front of or inside fuser: a) Feed sensor OP1 or feed actuator may be defective. b) Exit sensor SW1 defective, or deformed exit actuator may be defective. 2. In case of multi-feeding, refer to Error Code 2-050.
• Remedy: 1-a. Check Feed Sensor OP1. Refer to Error Code 2-020. Replace Feed Actuator if deformed. 1-b. Check SW1 contents. In operating mode, CPU pin 48 should be below 0.7V. If not, check SW1 contact resistance. Replace SW1 if over 100 ohms. If the switch works normally, check R30 and R43. If deformed, replace the Exit Sensor Actuator. 2. In case of multi feeding, refer to Error Code 2-050.

• Code: 2-040
• Description: Paper is completely fed out of the printer, but Jam2 occurs, or the paper is stuck in the fuser roller.
• Causes: 1. Engine board 2. Fuser. 1. If Jam2 occurs after the paper is completely fed out of the printer, the exit sensor contact may be bad or the exit sensor actuator may be deformed.
• Remedy: 1-1. Check if the exit sensor actuator is deformed, and replace if required. 1-2. Check the exit sensor switch contact and related parts. Refer to Error Code 2-030. 2. If the paper is stuck in the fuser, disassemble the fuser and remove the jammed paper, and clean the surface of the pressure roller with a soft cloth, dampened with alcohol.