Konica Minolta 7075/FORCE 75, Service Manual

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CONTENTS
iv
[5] M23 (Charger Cleaning ) Control .......... 2-F-4
[6] M18 (Transfer/Separation Cleaning)
Control .................................................... 2-F-5
[7] PCL/TSL Control ..................................... 2-F-6
DEVELOPING UNIT ............................................ 2-G-1
[1] Composition ............................................ 2-G-1
[2] Mechanisms ............................................ 2-G-1
[3] M3 (Developing Unit Drive) Control ........ 2-G-2
[4] Developing Bias Control ......................... 2-G-2
[5] Toner Density Control ............................. 2-G-3
[6] Dmax Control .......................................... 2-G-4
[7] Gradation Correction Control .................. 2-G-6
[8] Dot Diameter Correction Control ............. 2-G-7
[9] FM2 (Developing Suction) Control .......... 2-G-8
TONER SUPPLY UNIT ....................................... 2-H-1
[1] Composition ............................................ 2-H-1
[2] Mechanisms ............................................ 2-H-1
[3] Toner Level Detection Control ................ 2-H-2
[4] M11 (Toner Supply 1) Control ................. 2-H-4
CLEANING/TONER RECYCLE UNIT ................... 2-I-1
[1] Composition .............................................. 2-I-1
[2] Mechanisms .............................................. 2-I-1
[3] M14 (Blade) Control .................................. 2-I-2
TRAY 1/2 PAPER FEED UNIT ............................. 2-J-1
[1] Composition ............................................. 2-J-1
[2] Mechanisms ............................................. 2-J-1
[3] First Paper Feed Control .......................... 2-J-3
[4] Paper Up Drive Control ............................ 2-J-5
[5] Paper Size Detection Control ................... 2-J-7
[6] No Paper Detection Control ..................... 2-J-8
TRAY 3 PAPER FEED UNIT ............................... 2-K-1
[1] Composition ............................................ 2-K-1
[2] Mechanisms ............................................ 2-K-1
[3] First Paper Feed Control ......................... 2-K-3
[4] Paper Up Drive Control ........................... 2-K-4
[5] Paper Size Detection Control .................. 2-K-5
[6] No Paper Detection Control .................... 2-K-5
BY-PASS TRAY ................................................... 2-L-1
[1] Composition ............................................. 2-L-1
[2] Mechanisms ............................................. 2-L-1
[3] First Paper Feed Control .......................... 2-L-2
[4] Paper Up/down Control ............................ 2-L-3
[5] Paper Size Detection Control ................... 2-L-4
[6] No Paper Detection Control ..................... 2-L-5
VERTICAL PAPER CONVEYANCE SECTION .. 2-M-1
[1] Composition ............................................ 2-M-1
[2] Mechanisms ............................................ 2-M-1
[3] Vertical Paper Conveyance Control ........ 2-M-2
ADU .................................................................... 2-N-1
[1] Composition ............................................ 2-N-1
[2] Mechanisms ............................................ 2-N-2
[3] Loop/Second Paper Feed Control .......... 2-N-9
[4] Paper Conveyance Control ................... 2-N-10
[5] Paper Reverse and Exit Control ........... 2-N-11
[6] ADU Paper Feed/Reversal Control ...... 2-N-13
[7] ADU Paper Conveyance/Feed Control . 2-N-15
FIXING UNIT ....................................................... 2-O-1
[1] Composition ............................................ 2-O-1
[2] Mechanisms ............................................ 2-O-1
[3] M16 (Web Drive) ..................................... 2-O-4
[4] Fixing Temperature Control .................... 2-O-5
[5] SD3 (fixing guide) Control ....................... 2-O-7
OTHER KINDS OF CONTROL ........................... 2-P-1
[1] Parts Energized when
the Main Switch is OFF ........................... 2-P-1
[2] Parts that Operate when the Main Switch
is Turned ON ........................................... 2-P-2
[3] Cooling Fan Control ................................ 2-P-3
[4] Operation Panel Control ......................... 2-P-6
[5] Counter Control ....................................... 2-P-8
[6] Option Control ......................................... 2-P-9
3. DISASSEMBLY/ASSEMBLY
EXTERNAL SECTION ........................................ 3-A-1
[1] Replacing Ozone Filters .......................... 3-A-1
[2] Removing and Reinstalling the External
Cover ...................................................... 3-A-1
[3] Removing and Reinstalling the Front
Right Door ............................................... 3-A-2
[4] Removing and Reinstalling the Front
Left Door ................................................. 3-A-3
[5] Removing and Reinstalling the Operation
Panel ....................................................... 3-A-3
DRIVE SECTION ................................................ 3-B-1
[1] Removing and Reinstalling the Drum
Motor ....................................................... 3-B-1
[2] Removing and Reinstalling the Main
Motor ....................................................... 3-B-2
READ SECTION ................................................. 3-C-1
[1] Screw that Must not be Removed/
Loosened ................................................ 3-C-1
[2] Removing and Reinstalling the CCD
Unit ....................................................... 3-C-1-1
[3] Replacing the Exposure Lamp ................ 3-C-3
[4] Replacing and Reinstalling the Exposure
Unit .......................................................... 3-C-4
[5] Installing the Optics Wire ........................ 3-C-5
[6] Cleaning the Slit Glass and White Color
Reference Plate Glass ............................ 3-C-8
[7] Cleaning the Platen Glass ...................... 3-C-8
WRITE SECTION ................................................ 3-D-1
[1] Removing and Reinstalling the Write
Unit .......................................................... 3-D-1
[2] Cleaning the Dust-proof Glass ................ 3-D-2
[3] Removing and Reinstalling the Image
Control Board .......................................... 3-D-3
DRUM UNIT ........................................................ 3-E-1
[1] Removing and Reinstalling the Drum
Unit .......................................................... 3-E-1
[2] Cleaning and Installing the Coupling ...... 3-E-2
[3] Removing and Reinstalling the Drum
Temperature Sensor Board .................... 3-E-2