(Refer to "4.1.2 Exit Tray".) 3 Take off toner cartridges (Y) and (M), and then close the front cover. 2 Open the front cover and take off the exit tray. Turn the code 08-2692 "Prevention of color toner low density / ON/OFF setting" to ON, and then set number of sheets to be judged at the code 08- 2693 "Prevention of color toner low density/Judged number of sheets setting". Is the color printing ratio 5% or more? Yes 2 No The color toner low density might be the cause. Description: color registration abnormality.Description: Connection error between SLG board and SYS board.Check if any foreign matter is on the needle electrode or main charger grid.Check if the needle electrode is broken or the main charger grid is deformed.Spring of high-voltage supply contact point Check if the spring of high-voltage supply contact point is deformed. Remedy: Main charger Check if the main charger is installed securely.Description: High-voltage transformer abnormality: Leakage of the main charger is detected.Engine-CPU, FROM, and SRAM Check if the conductor pattern between the Engine-CPU, FROM, and SRAM is short circuited or open circuited. Remedy: Main power switch Turn OFF the main power switch, then back ON.Board check 8 HRNS-TNRIC-140 for each color (Y, M, C and K).Check that the board is installed properly.Harness check 7 CTIF board for each color (Y, M, C and K).Board check 7 Notes: The spring of the contact point may be released if you push the toner cartridge all the way in when an abnormality occurs.Check that the CTIF board is installed properly.4 Is the spring of the contact point returned when it is pushed lightly? Yes No 3 Contact point on the equipment side Check that the spring of the contact point for each color (Y, M, C and K) is not deformed. Check that the CTRG board of each cartridge (Y, M, C and K) is installed properly.Check the phenomenon by removing the toner cartridges (Y, M, C and K) and reinserting them.
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