Konica Minolta BIZHUB C20, Service Manual

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20
Adjustment / Settin
T
roubleshooting
Appendix
Field Service V er. 1.0 Sep. 200 8
iii
7.3.14 High voltage unit/2 (H V 2) ............................................................................ 72
7.3.15 Relay board (REYB).................................................................................... 73
7.3.16 Toner level sensor board (TLSB) ................................................................ 75
7.3.17 PH unit ........................................................................................................ 7 8
7.3.1 8 Driving unit .................................................................................................. 8 5
7.3.19 Scanner unit ................................................................................................ 8 6
7.3.20 Exposure unit .............................................................................................. 8 7
7.3.21 Backup Battery............................................................................................ 8 9
7.3.22 PWB box ..................................................................................................... 90
7.3.23 PWB box lower cover .................................................................................. 94
7.3.24 Color PC drum motor (M2).......................................................................... 94
7.3.25 Transport motor (M3) .................................................................................. 95
7.3.26 Fusing motor (M4)....................................................................................... 95
7.3.27 K Developing motor (M5) ............................................................................ 95
7.3.2 8 Toner supply motor/Y, M (M6) ..................................................................... 96
7.3.29 Toner supply motor/C, K (M7) ..................................................................... 96
7.3.30 Scanner motor (M100) ................................................................................ 97
7.3.31 Media feed clutch assy................................................................................ 99
7.3.32 Registration roller clutch (CL3).................................................................. 100
7.3.33 1st image transfer pressure/retraction clutch (CL4) .................................. 101
7.3.34 2nd image transfer pressure/retraction clutch (CL5) ................................. 102
7.3.35 Switchback roller feed clutch (CL11)......................................................... 103
7.3.36 Switchback roller reverse clutch (CL12).................................................... 105
7.3.37 Duplex transport roller clutch (CL13) ........................................................ 106
7.3.3 8 Temperature/ humidity sensor (TEM/HUMS) ............................................ 10 8
7.3.39 IDC sensor board/Re, IDC sensor board/Fr (IDCSB/R, IDCSB/L) ............ 109
7.3.40 Speaker (SP1)........................................................................................... 110
7.3.41 Memory (DIMM) ........................................................................................ 110
7.3.42 Hard disk ................................................................................................... 111
7.4 Cleaning procedure .......................................................................................... 112
7.4.1 Tray 1 feed roller........................................................................................ 112
7.4.2 Tray 2 feed roller........................................................................................ 112
7.4.3 V ertical transport roller .............................................................................. 113
7.4.4 Laser irradiation section ............................................................................ 113
Adjustment/Setting
8 . How to use the adjustment section ..................................................................... 115
9. Description of the control panel........................................................................... 116