Causes: 1. Engine board 2. Developer cartridge 3. Transfer roller 4. Operating environment. 1-1. Transfer voltage low (in excess of approx. 10% below spec) 1-2. Supply and /or bias voltage high. 1-3. Negative transfer voltage is not correct. 1-4. Erasing lamp is defective (causing approx. 20% residual image) 2. Unauthorized recording paper has been used. 3. Abnormal ambient temperature or humidity.
Remedy: 1-1. Refer to Error Code 1-060. 1-2. Refer to Error Code 1-061. 1-3. Refer to Error Code 1-090 and 1-091. 1-4. If the erasing lamp does not turn on or off properly, check the lamp PCB and Q1/Q10 on the engine board. The erasing lamp should be on when CPU pin 35 is 0V. (Check the voltage after you remove the developer and manually activate the top cover switch). Replace the lamp if it does not come on. 2. Use the recommended type of recording paper. 3. If the printer is used in abnormal ambient conditions for a long time, print errors may occur.
Code: 1-090
Description: Ghost occurs at 94mm intervals
Causes: 1. Developer cartridge 2. Main body. 1. Contamination of high voltage terminals in the main body, engine board, and/or developer. 2. Transfer roller lifetime has expired. 3. No using recommended recording paper. 4. The erasing lamp defective.
Remedy: 1. Open top cover and disassemble the unit and clean contamination components. 2. After replacing the transfer roller, make sure the transfer voltage is normal. 3. Use a recommended type of recording paper. 4. If the erasing lamp does not turn on and off properly, check the lamp PCB and Q1/Q10 in the engine board. The erasing lamp should be on when CPU pin 35 is 0V. (Check the voltage by removing the developer and activating the top cover switch)
Code: 1-090-1
Description: Ghost occurs at 94mm intervals
Causes: Operating environment. 1. Strong light, such as direct sunlight, entering the manual feeder, causing a horizontal ghost on the printed page. 2. Abnormally low temperature and humidity. In this case, ghost occurs on the entire page and the print density is too light.
Remedy: 1. If strong light enters the manual feeder ; Change the orientation or location of the printer or attach the OPC sheet cover. 2. If the operating temperature and relative humidity are too low, try waiting about 1 hour after power on before using printer
Code: 1-091
Description: When xerographic paper is used in ADF, ghost occurs at 94mm intervals
Causes: Engine board. No minus(-) transfer voltage output from the engine board. (Normal voltage: 850-1250V with 100 Mohm load)
Remedy: Check the following parts : U201(KA324), Q207(A708), Q202(KSD526-Y), T201, U203(sn7407) Resistors and Diodes and etc. in the output and feedback section
Code: 1-092
Description: When xerographic paper is used in ADF, ghost occurs at 94mm intervals
Causes: Engine board. The (+) transfer voltage may be abnormal when performing DCU 13 with 100 Mohm load on the transfer voltage output. (Normal voltage: 900V (+5/-5V) DCU 14, 1450-1550V DCU 13).
Remedy:
Code: 1-093
Description: When printing on card stock or transparencies using manual feeder, ghost occurs at 94mm intervals
Causes: 1. Improper paper type selected in menu setup 2. Engine board.1. When printing on card stock or transparencies, higher transfer voltage is required. Select Thick mode on paper type menu using panel or software application. 2. Defective transfer voltage circuit in the engine board.
Remedy: 1. Select Thick Mode on paper type menu using panel or software application to print on card stock or transparencies. 2. If the transfer voltage circuit in the engine board is out of specification, refer to Error Code 1-091