2KR/2KS
2-2-4
21. Original detection switch (ODSW) ............... Detects the opening/closing of the original platen.
22. Original size sensor (OSS) .......................... Detects the size of the original.
23. Registration switch (RSW) ........................... Controls the secondary paper feed start timing.
24. Eject switch (ESW) ...................................... Detects a paper misfeed in the fuser section.
25. Feedshift switch (FSSW) ............................. Detects a paper misfeed in the switchback section in a duplex copy.
26. Toner sensor (TNS)...................................... Detects the toner density in the developing unit.
27. Toner container detection switch
(TCDSW) ..................................................... Detects the presence of the toner container.
28. Toner container sensor (TCS)...................... Detects the quantity of toner in a toner container.
29. Waste toner box detection switch
(WTDSW)..................................................... Detects the presence of the waste toner box.
30. Overflow sensor (OFS) ................................ Detects when the waste toner box is full.
31. Humidity sensor (HUMS) ............................. Detects absolute humidity.
32. Fuser thermistor 1 (FTH1) ........................... Detects the heat roller temperature.
33. Fuser thermistor 2 (FTH2) ........................... Detects the heat roller temperature.
34. Front cover switch (FRCSW) ....................... Detects the opening and closing of the front cover.
35. Left cover 1 switch (LC1SW) ....................... Detects the opening and closing of the left cover 1.
36. Left cover 2 switch (LC2SW) ....................... Detects the opening and closing of the left cover 2.
37. Duplex paper conveying switch
(DUPPCSW) ................................................ Detects a paper jam in the duplex section.
Summary of Contents for TASKalfa 420i
Page 1: ...SERVICE MANUAL Published in May 2010 842KS113 2KSSM063 Rev 3 TASKalfa 420i TASKalfa 520i ...
Page 4: ...This page is intentionally left blank ...
Page 10: ...This page is intentionally left blank ...
Page 14: ...2KR 2KS This page is intentionally left blank ...
Page 224: ...2KR 2KS 1 4 66 This page is intentionally left blank ...
Page 328: ...2KR 2KS 2 3 30 This page is intentionally left blank ...
Page 371: ...INSTALLATION GUIDE FOR PAPER FEEDER ...
Page 381: ...INSTALLATION GUIDE FOR 3000 SHEETS PAPER FEEDER ...
Page 436: ...INSTALLATION GUIDE FOR CENTER FOLDING UNIT ...
Page 450: ...INSTALLATION GUIDE FOR MAILBOX ...
Page 458: ...INSTALLATION GUIDE FOR HOLE PUNCH UNIT ...
Page 470: ...INSTALLATION GUIDE FOR BUILT IN FINISHER ...
Page 483: ...INSTALLATION GUIDE FOR JOB SEPARATOR ...
Page 491: ...INSTALLATION GUIDE FOR FAX System ...
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