Transcript
MB-502Option Printer
THEORY OF OPERATION
Code Y109740-7
PUBLICATION ISSUED BY:
Olivetti S.p.A.77, Via Jervis - 10015 Ivrea (TO)Italy
Copyright © 2008, OlivettiAll rights reserved
Revision historyAfter publication of this service manual, the parts and mechanism may be subject to change forimprovement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine.
When any change has been made to the descriptions in the service manual, a revised version will beissued with a revision mark added as required.
Revision mark:• To indicate clearly a section revised, show to the left of the revised section.
A number within represents the number of times the revision has been made.
• To indicate clearly a section revised, show in the lower outside section of the correspond-ing page. A number within represents the number of times the revision has been made.
NOTERevision marks shown in a page are restricted only to the latest ones with the old ones deleted.
• When a page revised in Ver. 2.0 has been changed in Ver. 3.0: The revision marks for Ver. 3.0 only are shown with those for Ver. 2.0 deleted.
• When a page revised in Ver. 2.0 has not been changed in Ver. 3.0: The revision marks for Ver. 2.0 are left as they are.
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MB-502
Outline
Composition/Operation
Theory of Operation Ver. 1.0 Jun. 2008
i
CONTENTS
MB-502
Outline1. Product specifications ............................................................................................. 1
2. Paper path............................................................................................................... 3
Composition/Operation3. Composition ............................................................................................................ 5
4. Drive........................................................................................................................ 6
............................................ 7
............................................ 7
............................................ 8
.......................................... 10
5. Operation ....................................................................
5.1 Bypass paper lifting motion control...........................
5.2 Paper size detection .................................................
5.3 Paper empty detection..............................................
MB-502
Outline
Composition/Operation
Theory of Operation Ver. 1.0 Jun. 2008
ii
Blank Page
Theory of Operation Ver. 1.0 Jun. 2008 1. Product specifications
1
Outline
MB-502
Outline1. Product specificationsA. Type
B. Paper
Name Multiple Bypass Tray
Installation Screwed to the copier
Registration Center
Type Paper source (maximum tray capacity)
Copy paper type Plain paper (60 to 90 g/m2, 16 to 24 lb)
100 sheets
Thick paper 1 20 sheets
10 sheets
A5S, B5, B5S, A4, A4S, A3,
x 14, 11 x 17
LS/2 x 8-1/2S, 7-1/4 x 10-1/2,8-1/2 x 11, 8-1/2 x 11S, 17, 12 x 18
h
mm
*1: Image is not guaranteed when thick paper 3 is used*2: Monochrome print only.
(91 to 150 g/m2, 24.2 to 40 lb)
Thick paper 2 (151 to 209 g/m2, 40.2 to 55.6 lb)
Thick paper 3 (210 to 256 g/m2, 55.9 to 68.1 lb) *1
OHP film (crosswise feeding only) *2
Label sheets
Envelopes
Postcards
Translucent paper
Paper size Metric area A6S, B6S, A5,A3 Wide, FLS8-1/2 x 11, 8-1/2
Inch area B6S, A4, A3, F5-1/2 x 8-1/2, 5-1
7-1/4 x 10-1/2S, 8-1/2 x 14, 11 x
Copy paper dimensions
Width 90 to 311.1 mm3.6 to 12.3 inc
Length 139.7 to 457.25.5 to 18 inch
Theory of OperationY109740-7
1. Product specifications Theory of Operation Ver. 1.0 Jun. 2008MB-502
Outline
C. Machine specifications
D. Operating environmentConforms to the operating environment of the main body.
NOTE• These specifications are subject to change without notice.
Power Requirements DC 24 V ± 10 % (supplied from the main body)
DC 5 V ± 5 %
Max. Power Consumption
27 W or less
Dimensions 472 mm (W) × 456 mm (D) × 102 mm (H)18.6 inch (W) × 18.0 inch (D) × 4.0 inch (H)
Weight 2.9 kg (6.4 lb)
Y109740-7
2 Theory of OperationTheory of Operation Ver. 1.0 Jun. 2008 2. Paper path
3
Outline
MB-502
2. Paper path
T1C001AA
Paper feed from the bypass tray
Main body
MB-502
AD-505
A0EP
PC-105
PC-204
Y109740-7 Theory of Operation
2. Paper path Theory of Operation Ver. 1.0 Jun. 2008MB-502
Outline
Y109740-7
4Blank Page
Theory of Operation
Theory of Operation Ver. 1.0 Jun 2008 3. Composition
5
Composition/Operation
MB-502
Composition/Operation3. Composition
A02FT2C031AA
002AA
PS13)
Paper side plate
)
FD size sensor/3 (PS22)
A0EPT2C
Bypass paper take-up roller
Paper empty sensor (
Paper lifting plate
Bypass separator roller
Paper width detection resistor (VR1)
FD size sensor/1 (PS20)
FD size sensor/2 (PS21
Y109740-7 Theory of Operation
4. Drive Theory of Operation Ver. 1.0 Jun 2008Composition/Operation
MB-502
4. Drive
030AA
A02FT2C032AA
r (PS14)
Paper feed clutch (CL5)
s paper take-up roller
on sensor (PS14)
aper lifting cam
Y109740-7
6A02FT2C
Lift-up position sensoManual pick-up solenoid (SD2)
Bypas
Transport motor (M1)* Main body
Lift-up positi
Paper feed clutch (CL5)
Manual pick-up solenoid (SD2)
P
Theory of Operation
Theory of Operation Ver. 1.0 Jun 2008 5. Operation
7
Composition/Operation
MB-502
5. Operation
5.1 Bypass paper lifting motion control
• It turns the manual pick-up solenoid ON when the bypass paper feed is started. The lift-ing cam will rotate to move the paper lifting plate up to the feeding position.
• When the printing is finished, the manual pick-up solenoid will be ON again. The paper lifting cam will then rotate to move the paper lifting plate down to the waiting position.
• The paper lifting plate will stay at the feeding position while the job is being executed. It will move down to the waiting position when the job is finished and no following printing is demanded.
• The position of the paper lifting plate is detected by the detection plate which is mounted coaxially with the paper lifting plate, and also by the lift-up position sensor.
• When the paper jam occurs, the paper lifting plate will move down to the waiting position.
4038T2C183AA
Lift-up position sensor(PS14)
aper take-up roller
-up solenoid
Paper feed clutch (CL5)
A0EPT2C001AA
Move to standby position
A02FT2C030AA
Bypass p
Manual pick(SD2)
Paper feed clutch (CL5)
Manual pick-up solenoid (SD2)
Lift-up position sensor(PS14)
Transport motor (M1) *Main body
Manual pick-up solenoid (SD2)
Lift-up position sensor (PS14)
Paper feed clutch (CL5)
Start key ON
Y109740-7 Theory of Operation
5. Operation Theory of Operation Ver. 1.0 Jun 2008Composition/Operation
MB-502
5.2 Paper size detection
• The size of the paper loaded in the bypass section is detected by the combination of ON or OFF positions of the three FD size sensors and the paper width detection resistor.
• Moving the paper guide varies the resistance value of the paper width detection resistor.
Metric area
for Foolscap.
Paper size detected
FD size sensor/1 (PS20)
FD size sensor/2 (PS21)
FD size sensor/3 (PS22)
Paper width detection resistor (VR1)
Width (mm)
A6S
OFF OFF OFF
80 to less than 115
B6S 115 to 144 inclusive
A5 196 to 225 inclusive
B5 242 to 268 inclusive
A5S 133 to 164 inclusive
169 to less than 204
204 to 225 inclusive
255 to less than 288
288 to 330 inclusive
188 to 235 inclusive
201 to 231 inclusive
255 to less than 288
288 to less than 301
301 to 330 inclusive
r/3 Paper width detection
resistor (VR1)
Width (mm)
115 to 144 inclusive
201 to 231 inclusive
242 to 282 inclusive
125 to 155 inclusive
169 to less than 201
201 to 231 inclusive
255 to less than 288
288 to 330 inclusive
188 to 235 inclusive
201 to 231 inclusive
242 to less than 268
268 to less than 288
288 to less than 301
301 to 330 inclusive
Y109740-7
8Inch area
*1: One of the following paper sizes can be selected to be set 8 x 13, 8.125 x 13.25, 8.25 x 13, 8.5 x 13, 8.65 x 13
ON OFF OFF
B5S
A4S
8-1/2 x 11
A4
FLS *1 ON ON OFF
8-1/2 x 14
ON ON ON11 x 17
A3
A3_Wide
Paper size detected
FD size sensor/1 (PS20)
FD size sensor/2 (PS21)
FD size senso(PS22)
B6S
OFF OFF OFF5-1/2 x 8-1/2
7-1/4 x 10-1/2
5-1/2 x 8-1/2S
ON OFF OFF
7-1/4 x 10-1/2S
8-1/2 x 11S
8-1/2 x 11
A4
FLS *1 ON ON OFF
8-1/2 x 14
ON ON ON
B4
11 x 17
A3
12 x 18
Theory of Operation
Theory of Operation Ver. 1.0 Jun 2008 5. Operation
9
Composition/Operation
MB-502
A02FT2C035AA
FD size sensor/2 (PS21)
FD size sensor/3 (PS22)
FD size sensor/1 (PS20)
Paper width detection resistor (UN1)
4038T2C184AA
Y109740-7 Theory of Operation
5. Operation Theory of Operation Ver. 1.0 Jun 2008Composition/Operation
MB-502
5.3 Paper empty detection
• Paper empty is detected by the paper empty sensor.• Paper empty is detected both at the standby and the paper feed positions.
A02FT2C034AA
Paper empty sensor (PS13)
Y109740-7
10A02FT2C033AA
When there is no paper
When the paper is fully supplied
Theory of Operation
UPDATING STATUS
DATE UPDATED PAGES PAGES CODE
09/2008 1ST EDITION 16 Y109740-7
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