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Make/Model Information:

  • Brand:   Konica-minolta
  • Models included:
    • KonicaMinolta 7155
    • KonicaMinolta 7165
    • KonicaMinolta 7255
    • KonicaMinolta 7272

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   979
  • File size:  ∼ 34.50  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMKM-1043

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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SERVICE MANUAL
Models
7155/7165/7255/7272
JANUARY 2004
CSM-7155/7165/7255/7272
KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.
SAFETY AND IMPORTANT WARNING
ITEMS . . . . .S-1
IMPORTANT NOTICE . . . . . . . . . . . . . . . . . .S-1
DESCRIPTION ITEMS FOR DANGER,
WARNING AND CAUTION . . . . .S-1
SAFETY WARNINGS . . . . . . . . . . . . . . . . . . .S-2
SAFETY INFORMATION . . . . . . . . . . . . . . .S-10
IMPORTANT INFORMATION . . . . . . . . . . .S-10
SAFETY CIRCUITS . . . . . . . . . . . . . . . . . . S-11
INDICATION OF WARNING ON THE MACHINE . . .S-13
CONTENTS
CONTENTS
3 DIS./ASSEMBLY 2 UNIT EXPLANATION
3 DIS./ASSEMBLY 1 OUTLINE
3 DIS./ASSEMBLY 3 DIS./ASSEMBLY
MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE MANUAL Dec. 2003 7155/7165/7255/7272 - REPLACEMENT 4
LIST OF DIFFERENCE for 7155/7165 and
7255/7272
1. OUTLINE
OUTLINE OF SYSTEM
7155/7165/7255/7272 PRODUCT
SPECIFICATIONS
CENTRAL CROSS-SECTIONAL VIEW
DRIVE SYSTEM DIAGRAM
[1] Fixing/Web Drive Section
[2] Drum Drive Section
[3] Developing Drive Section
[4] Paper Feed/Vertical Conveyance/Tray Up
Drive Section
[5] Bypass Paper Feed/ADU Pre-registration
Drive Section
[6] Charging and Transfer/Separation Wire
Cleaning Drive Section
[7] ADU Conveyance Drive Section
[8] Paper Exit Drive Section
[9] Toner Supply Drive Section
[10] Optics Drive Section
2. UNIT EXPLANATION
EXTERNAL SECTION
[1] Composition
DRIVE SECTION
[1] Composition
[2] Mechanisms
[3] M2 (Drum) Control
[4] M4 (Fixing) Control
SCANNER SECTION
[1] Composition
[2] Mechanisms
[3] M11 (Scanner) Control
[4] Exposure control
[5] Original Read Control
[6] APS Control
[7] AE Control
WRITE UNIT
[1] Composition
[2] Mechanisms
[3] M15 (Polygon) Control
[4] Image Write Control
DRUM UNIT
[1] Composition
[2] Mechanisms
[3] Separation Claw Control
[4] Paper Guide Plate Control
CORONA UNIT SECTION
[1] Composition
[2] Mechanisms
[3] Charging Control
[4] Transfer/Separation Control
[5] M14 (Charger Cleaning) Control
CONTENTS
3 DIS./ASSEMBLY
1 OUTLINE
3 DIS./ASSEMBLY
2 UNIT EXPLANATION
3 DIS./ASSEMBLY 3 DIS./ASSEMBLY
MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE MANUAL Dec. 2003 7155/7165/7255/7272 - REPLACEMENT 4
[6] M10 (Transfer/Separation Cleaning)
Control
[7] PCL/TSL Control
DEVELOPING UNIT
[1] Composition
[2] Mechanisms
[3] M3 (Developing) Control
[4] Developing Bias Control
[5] Dmax Control
[6] Gradation Correction Control
[7] Dot Diameter Correction Control
[8] Toner Density Control
[9] FM4 (Developing Suction) Control
TONER SUPPLY UNIT
[1] Composition
[2] Mechanisms
[3] Toner Level Detection Control
[4] M12 (Toner Supply) Control
CLEANING/TONER RECYCLE UNIT
[1] Composition
[2] Mechanisms
[3] TGR (Toner Guide Roller) Control
[4] Other Control
TRAY 1/2 (7155, 7165), TRAY 3/4 (7255/7272)
PAPER FEED UNIT
[1] Composition
[2] Mechanisms
[3] First Paper Feed Control
[4] Paper Up Drive Control
[5] Paper Size Detection Control
[6] No paper detection control
TRAY 1/2 PAPER FEED UNIT (7255/7272)
[1] Composition
[2] Mechanisms
[3] First Paper Feed Control
[4] Horizontal Conveyance Control (Tray 1)
[5] Paper Up Drive Control
[6] No paper detection control
TRAY 3 PAPER FEED UNIT (7155/7165)
[1] Composition
[2] Mechanisms
[3] First Paper Feed Control
[4] Paper Up Drive Control
[5] Paper Size Detection Control
[6] No paper detection control
BY-PASS TRAY
[1] Composition
[2] Mechanisms
[3] First Paper Feed Control
[4] Paper Up/Down Control
[5] Paper Size Detection Control
[6] No paper detection control
VERTICAL CONVEYANCE SECTION
[1] Composition
[2] Mechanisms
[3] Vertical Conveyance Control
[1] Composition
[2] Mechanisms
[3] Loop/Second Paper Feed Control
[4] Paper Conveyance Control
[5] Paper Reverse and Exit Control
[6] ADU Paper Conveyance/Feed
Control
FIXING UNIT
[1] Composition
[2] Mechanisms
[3] M16 (Web Drive) Control
[4] Fixing Temperature Control
OTHER KINDS OF CONTROL
[1] Parts Energized when SW1
(Main Power) is OFF
[2] Parts that Operate when SW1 (Main
Power)/SW2 (Sub Power) is ON
[3] Cooling Fan Control
[4] Operation Panel Control
[5] Counter Control
[6] Option Control
3. DISASSEMBLY/ASSEMBLY
EXTERNAL SECTION
[1] Replacing the Ozone Filter
[2] Replacing the Developing Suction
Filter
[3] Removing and Reinstalling the External
[4] Changing the Operation Panel Attachment
Angle and Removing/Reinstalling
[5] Resetting the Circuit Breaker
DRIVE SECTION
[1] Removing and Reinstalling the Drum
Motor(M2)
[2] Removing and Reinstalling the Fixing
Input Gear
SCANNER SECTION
[1] Screws that Must not be Removed
[2] Removing and Reinstalling the
CCD Unit
[3] Replacing the Exposure Lamp
[4] Removing and Reinstalling
the Exposure Unit
[5] Installing the Optics Wire
[6] Cleaning the Slit Glass
and Platen Glass
[7] Replacing the Scanner Motor (M11)
WRITE SECTION
[1] Removing and Reinstalling
the Write Unit
[2] Cleaning the Dust-proof Glass
DRUM UNIT
[1] Removing and Reinstalling
the Drum Unit
CONTENTS
3 DIS./ASSEMBLY
1 OUTLINE
3 DIS./ASSEMBLY
2 UNIT EXPLANATION
3 DIS./ASSEMBLY 3 DIS./ASSEMBLY
MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE MANUAL Dec. 2003 7155/7165/7255/7272 - REPLACEMENT 4
[2] Installing the Coupling
[3] Removing, Cleaning, and Reinstalling
the Drum
[4] Removing and Reinstalling the Separation
Claws and Separation Claw Solenoid
[5] Removing and Reinstalling the Toner
Control Sensor Board
CORONA UNIT
[1] Screws that Must not be Removed
[2] Removing and Reinstalling the Charging
Corona Unit
[3] Removing and Reinstalling the Charge
Control Plate
[4] Replacing the Charging Wires
[5] Removing and Reinstalling the Charging
Wire Cleaning Unit
[6] Removing and Reinstalling the PCL
[7] Cleaning the Charging Corona
Unit/PCL
[8] Removing and Reinstalling the Transfer/
Separation Corona Unit
[9] Removing and Reinstalling the Plunger
Prevention Plate
[10] Replacing the Transfer/Separation
Wires and Transfer/Separation Wire
Cleaning Block
[11] Removing and Reinstalling the TSL
DEVELOPING UNIT
[1] Screws that must not be Removed
[2] Removing and Reinstalling the
Developing Unit
[3] Replacing the Developer
[4] Cleaning the Developing Unit
Bias shaft
TONER SUPPLY UNIT
[1] Replacing and Cleaning
the Toner Cartridge
CLEANING/TONER RECYCLE UNIT
[1] Removing and Reinstalling
the Cleaning Blade
[2] Removing and Reinstalling the Toner
Guide Roller (TGR)
PAPER FEED UNITS OF TRAYS 1 AND 2
(7155/7165)
[1] Removing and Reinstalling the Paper
Feed Unit
[2] Removing and Reinstalling the Paper
Feed Trays 1 and 2
[3] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber
[4] Removing and Reinstalling the Double
Feed Prevention Roller Rubber
[5] Replacing the Pre-registration and
Feed Clutches (MCs)
[6] Replacing the Wires
PAPER FEED UNITS OF TRAYS 1 AND 2
(7255/7272)
[1] Removing and Reinstalling the Paper
Feed Unit
[2] Removing and Reinstalling the Paper
Feed Tray 1
[3] Removing and Reinstalling the Paper Feed
Tray 2
[4] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber
[5] Removing and Reinstalling the Double
Feed Prevention Roller Rubber
[6] Replacing the Pre-registration and
Feed Clutches (MCs)
[7] Replacing the Horizontal Conveyance MC/L
[8] Replacing the Wires
PAPER FEED UNIT OF TRAY 3 (7155/7165)
[1] Removing and Reinstalling the Paper
Feed Unit
[2] Removing and Reinstalling
Paper Feed Tray 3
[3] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber
[4] Removing and Reinstalling the Double
Feed Prevention Roller Rubber
[5] Replacing the Pre-registration and
Feed Clutches (MCs)
[6] Replacing the Wires
PAPER FEED UNIT OF TRAY 3 AND 4
(7255/7272)
[1] Removing and Reinstalling the Paper
Feed Unit
[2] Removing and Reinstalling
Paper Feed Tray 3and 4
[3] Removing and Reinstalling the Paper
Feed Roller and Feed Roller Rubber
[4] Removing and Reinstalling the Double
Feed Prevention Roller Rubber
[5] Replacing the Pre-registration and
Feed Clutches (MCs)
[6] Replacing the Wires
BY-PASS FEED TRAY
[1] Removing and Reinstalling the by-pass
Feed Tray
[2] Replacing the Paper Feed Roller/Paper
Feed Roller Rubber
[3] Replacing the Double Feed Prevention
Roller Rubber
VERTICAL CONVEYANCE SECTION
[1] Removing and Reinstalling the Vertical
Conveyance Section
[2] Removing and Reinstalling the Vertical
Conveyance MC (MC11, MC12)
CONTENTS
3 DIS./ASSEMBLY
1 OUTLINE
3 DIS./ASSEMBLY
2 UNIT EXPLANATION
3 DIS./ASSEMBLY 3 DIS./ASSEMBLY
MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE MANUAL Dec. 2003 7155/7165/7255/7272 - REPLACEMENT 4
ADU UNIT
[1] Drawing out and Reinstalling
the ADU Stand
[2] Cleaning the Paper Dust
Removing Brush
[3] Cleaning the Paper Mis-centering PS
(PS70)/Leading Edge PS (PS43)
[4] Removing and Reinstalling the
Registration MC (MC1)
[5] Removing and Reinstalling the Second
Paper Feed Unit
[6] Cleaning the Registration PS (PS44)
[7] Removing and Reinstalling the
Registration Roller
[8] Removing and Reinstalling the
Pre-transfer Roller
[9] Cleaning the ADU Paper Reverse
PS (PS45)/Reverse/Exit PS (PS46)
[10] Removing and Reinstalling the ADU
Reverse Roller
[11] Removing and Reinstalling
the ADU Stand
[12] Removing and Reinstalling the Pre-
registration Roller
[13] Removing and Reinstalling the ADU
Conveyance Roller 3 and 4
[14] Removing and Reinstalling the ADU
Conveyanece Roller 1 and 2
[15] Removing and Reinstalling the Paper
Reverse/Exit Roller
FIXING UNIT
[1] Removing and Reinstalling
the Fixing Unit
[2] Removing and Reinstalling
the Fixing Unit (Top)
[3] Removing and Reinstalling
the Web Cover
[4] Removing and Reinstalling
the Cleaning Web
[5] Replacing the Fixing Heater
Lamps (L2, L3)
[6] Replacing the Fixing Heater
Lamp(L4)
[7] Removing and Reinstalling the Fixing
Separation Claw (Upper) Unit and Fixing
Separation Claws (Upper)
[8] Removing and Reinstalling the Fixing
Separation Claw (Lower) Unit and Fixing
Separation Claws (Lower)
[9] Removing and Reinstalling the Fixing
Upper Roller and Fixing Drive Gear
[10] Removing and Reinstalling the Fixing
Lower Roller
[11] Removing and Reinstalling
the Decurler
[12] Removing and Reinstalling the Fixing
Temperature Sensors 1 and 2
[13] Removing and Reinstalling the
Thermostat (TS1)
[14] Removing and Reinstalling the
Thermostat (TS2)
MAIN BODY
1 OUTLINE
CENTRAL CROSS-SECTIONAL VIEW
In the case of the 7155/7165
Charging corona section
Image write section
Cleaning section
Toner supply section
Fixing section Developing section
Image read section
RADF(DF-316)
Second paper feed section
Paper exit section Bypass tray
Paper reverse exit section
Loop roller
Transfer corona section
Tray 1
Tray 2
Tray 3
Vertical conveyance section
Paper conveyance section
Separation corona section
PARTS GUIDE MANUAL
MARCH 2004
7165 7165 / 7165 7165 /
7155 7155 /
SCANNER SECTION
2 UNIT EXPLANATION
[6] APS Control
The APS method used in the platen mode is dif-
ferent from that used in the ADF mode. The sig-
nal read by the APS sensor or RADF's original
size detection sensor is processed by ICB
(image control board) via SCDB (scanner drive
board).
1. Operation
a. APS detection
(1) ADF mode
The paper size is detected according to the com-
bination of ON/OFF states of PS309 (original
size/2) and PS310 (original size/1) of the RADF's
original feed tray and the resistance value of
VR301 (original paper size).
(2) Platen mode
The paper size is detected according to the com-
bination of ON/OFF states of PS63 (APS/1),
PS64 (APS/2), and PS65 (APS/3) and the signal
read by the CCD sensor. PS63 to PS65 are used
to detect the original size in the sub-scanning
direction and the CCD sensor is used to detect
the original size in the main scanning direction.
Relationships between sensors and paper sizes
are as follows:
z ON
OFF
b. APS detection timing
The APS detection timing differs between the
platen mode and DF mode.
(1) ADF mode
When the RADF mode is selected or an original
is set on the RADF original feed tray, APS detec-
tion takes place using PS309 (original size/2),
PS310 (original size/1), and VR301 (original
size).
(2) Platen mode
When the RADF is closed and PS51 (APS tim-
ing) turns ON, L1 (exposure lamp) turns ON and
the CCD detects the reflected light to detect the
original size in the main scanning direction.
Since RADF is still open at this time, the black
level of the sky shot (outside the original) and the
white level of the original (inside the original) are
detected according to whether an original is
present. At this time, the original size in the sub-
scanning direction is detected using PS63 to
PS65 (APS/1 to APS/3). When the RADF is
closed completely and PS311 (ADF open/close)
turns ON, CCD reads the white level of the platen
cover and the black level in the original. Among
the two original sizes detected as discussed
above, the larger size is determined as the orig-
inal size in the main scanning direction.
APS TIM
APS 5V
APS 5V
APS 5V
APC CONT
COVER SIG
APS.1 SIG
APS.2 SIG
APS.3 SIG
SIZE PS L
5V PS309
SIZE PS L
APS TIMING
SIZE PS S
SIZE ANA
SIZE PS S
SIZE ANA
3.3V
PS63 PS64
Paper exit side
Photo sensor
Sensor
Paper size PS65 PS63 PS64
Min. size
B4 ???
A4R zz
A3 ???
8.5 x 11R z
8.5 x 11
8.5 x 14 ???
11x 17 ???
PARTS GUIDE MANUAL 7255 7272 /
OCTOBER 2003
?? ??? ?? ??
No. Description Model Pagination Remarks
1 MAIN MACHINE 7272/7255 67
2 ADF DF-322 9
3 FINISHER FS-110 18
4 FINISHER FS-111 20
5 FINISHER FS-210 23
6 CONTROLLER IP-511/A 1
7 LCT LT-402 10
8 LCT LT-412 9
9 COVER FEEDER PI-110 8
10 PUNCH KIT PK-110 3
11 PUNCH KIT PK-120/A 3
12 PUNCH UNIT PZ-108 11
13 PUNCH UNIT PZ-109 11
14 SIFT TRAY SF-101 4
GENERAL CONTENTS


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