Konica Minolta LT-203 User Manual
SERVICE MANUAL
MODEL
LT-203
Large Capacity Tray Unit
NOVEMBER 2002
CSM-LT203
LT-203
SERVICE MANUAL
Used On Model 7145
November 2002
IMPORTANT NOTICE
Because of the possible hazards to an inexperienced
person servicing this equipment, as well as the risk of
damage to the equipment, Konica Business Technologies strongly recommends that all servicing be
performed by Konica-trained service technicians only.
Changes may have been made to this equipment to
improve its performance after this service manual was
printed. Accordingly, Konica Business Technologies,
Inc., makes no representations or warranties, either
expressed or implied, that the information contained
in this service manual is complete or accurate. It is
understood that the user of this manual must assume
all risks or personal injury and/or damage to the
equipment while servicing the equipment for which
this service manual is intended.
Corporate Publishing Department
© 2002, KONICA BUSINESS TECHNOLOGIES, INC.
All rights reserved.
Printed in U.S.A.
CONTENTS
CONTENTS
SAFETY AND IMPORTANT WARNING ITEMS
Refer to the 7145 service manual on page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
I OUTLINE
1. LT-203 PRODUCT SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. CENTER CROSS-SECTIONAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
3. DRIVE SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3.1 Rear side drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3.2 Front side drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
II UNIT EXPLANATION
1. PAPER FEED SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
1.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
1.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.1 Tray up drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.2 Paper feed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.3 Remaining paper detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
III DISASSEMBLY/ASSEMBLY
1. PAPER FEED SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1.1 Removing the LT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1.2 Removing the right, front and rear covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1.3 Replacing the feed rubber and the paper feed rubber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
1.4 Replacing the double feed prevention rubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
1.5 Replacing the wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY
iii
CONTENTS
I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY
Blank page
iv
I OUTLINE
1. LT-203 PRODUCT SPECIFICATIONS
LT-203 PRODUCT SPECIFICATIONS
A. Type
Type: Side mount type large capacity paper feed tray
B. Functions
Paper size: A4, 8.5 x 11
Applicable copy paper: 60g/m
Maximum tray capacity: 2000 sheets (80g/m
2
to 105g/m2 (16lbs to 24lbs), high-quality paper
2
or 20lbs)
C. Machine data
Power source: 24VDC/5V (supplied from the main body)
Power consumption: Maximum 31VA (with no internal heater used)
Weight: Approx. 13kg
Dimensions: 339mm (W) x 515mm (D) x 299mm (H)
D. Maintenance and life
Maintenance: Same as the main body
Machine service life: Same as the main body
I OUTLINE
E. Operating environment
Temperature: 10°C to 30°C (50°F to 86°F)
Humidity: 10% RH to 80% RH
Note:
• The information herein may be subject to change for improvement without notice.
1-1
CENTER CROSS-SECTIONAL DIAGRAM
2. CENTER CROSS-SECTIONAL DIAGRAM
I OUTLINE
[2]
[1]
[5][4][3]
[1] Double feed prevention roller [4] Paper feed roller
[2] Conveyance roller [5] Paper lift plate
[3] Feed roller
1-2
3. DRIVE SYSTEM DIAGRAM
3.1 Rear side drive
[4]
[3]
DRIVE SYSTEM DIAGRAM
I OUTLINE
[2]
[1]
[1] Paper lift plate [3] M150 (LT paper feed motor)
[2] M151 (Tray up drive motor) [4] Conveyance roller
3.2 Front side drive
[3]
[2]
[1]
[1] SD151 (LT paper feed solenoid) [3] Feed roller
[2] Conveyance roller
1-3
Loading...