Samsung ML-1440 Service Manual - Page 39

4. Troubleshooting 4-1 How to use DCU 4-1-1 DCU Setup Page(4-2) 4-1-2 Code Page(4-2) 4-1-3 Self Diagnostic Mode Page(4-3) 4-1-4 Self Test Button Page(4-4) 4-1-5 Paper Path Layout Page(4-4) 4-1-6 DCU Panel Page(4-5) 4-2 The cause and solution of Bad image 4-2-1 Vertical Black Line and Band ..........Page(4-6) 4-2-2 Vertical White Line Page(4-6) 4-2-3 Horizontal Black Band Page(4-7) 4-2-4 Black/White Spot Page(4-7) 4-2-5 Light Image Page(4-8) 4-2-6 Dark Image or a Black Page(4-8) 4-2-7 Uneven Density Page(4-9) 4-2-8 Background Page(4-9) 4-2-9 Ghost (1 Page(4-10) 4-2-10 Ghost (2 Page(4-10) 4-2-11 Ghost (3 Page(4-11) 4-2-12 Ghost (4 Page(4-11) 4-2-13 Satins on the Face of Page............Page(4-11) 4-2-14 Satins on Back of Page Page(4-12) 4-2-15 Blank Page Print out (1 Page(4-12) 4-2-16 Blank Page Print out (2 Page(4-12) 4-3 The cause and solution of the bad discharge 4-3-1 Wrong Print Position Page(4-13) 4-3-2 JAM 0 Page(4-13) 4-3-3 JAM 1 Page(4-14) 4-3-4 JAM 2 Page(4-14) 4-3-5 Multi-Feeding Page(4-15) 4-3-6 Paper rolled in the fuser Page(4-15) 4-3-7 OPC Page(4-16) Troubleshooting 4-4 The cause and solution of the malfunction 4-4-1 All LEDs blinking (Fuser Error)........Page(4-17) 4-4-2 All LEDs blinking (SCAN ERROR) .Page(4-17) 4-4-3 Not function of the gear of the fuser due to melting away Page(4-18) 4-4-4 Paper Empty Page(4-18) 4-4-5 Paper Empty without indication.......Page(4-18) 4-4-6 Cover Open Page(4-19) 4-4-7 No lamp on when the cover is open Page(4-19) 4-4-8 Defective motor operation Page(4-20) 4-4-9 No Power Page(4-20) 4-4-10 Vertical Line Getting Curved .........Page(4-21) 4-5 Toner Cartridge Service 4-5-1 Precautions on Safe-keeping of Toner Cartridge Page(4-22) 4-5-2 Service for the Life of Toner Cartridge Page(4-22) 4-5-3 Service for Judgement of Inferior Expendables and the Standard of Guarantee .....Page(4-22) 4-5-4 Signs and Measures at Poor toner cartridge Page(4-23) 4-6 The cause and solutions of bad environment of the software 4-6-1 The printer is not working (1)...........Page(4-26) 4-6-2 The printer is not working (2) .........Page(4-27) 4-6-3 Abnormal Printing Page(4-28) 4-6-4 SPOOL Error Page(4-29) Samsung Electronics 4-1