Canon LBP-1260 User manual

LBP-1260
SERVICE
MANUAL
Canon

PREFACE
This Service Manual contains bask information required for after-sales service of the LBP- 1260
laser beam printer (hereinafter referred to as the “printer”). This information is vital to the
service technician in maintaining the high print quality and performance of the printer.
The cassette paper feeder and envelope feeder are prepared for the printer as optional
equipment, which contents are also described in this manual.
This manual is comprised of the following chapters:
Chapter 1:
Chapter 2:
Chapter 3:
Chapter 4:
Chapter 5:
Chapter 6:
General Description
Features. specifications, and operation
Operation and Timing
A description of the operating principles and timing sequences of the electrical and
mechanical systems.
The Mechanical System
Explanation of mechanical operation, disassembly, reassembly, and adjustment
procedures
Installation
Requirements for a suitable location, installation procedures, plus the storage and
handling of EP-E cartridges
Maintenance and Servicing
Parts replacement schedule, tools, lubricants, and solvents
Troubleshooting
Reference values and adjustments: troubleshooting procedures
General timing chart, general circuit diagram, PCB circuit diagrams, etc.
Information in this manual is subject to change as the product is improved or redesigned.
All relevant information in such cases will be supplied in Service Information Bulletins.
A thorough understanding of this printer. based on information in this Manual and Service
Information Bulletins, is required for maintaining its performance and for locating and
repairing the causes of malfunctions.

I.
II.
III.
I.
CHAPTER 1
FEATURES
. . . . . . . . . . . . . . . . . , . . , . . , . . , . .
SPECIFICATIONS
. . . . . . . . . . . . . . . . . . .
ASAFETY INFORMATION.....
CHAPTER 2
BASIC
OPERATION . . . . . . . . . . . . . . . . .
A. FImctions.. ........................
B. Outline of the Electrical
System..............................
C. DC Controller Input
SignsIs
..............................
D. DC Controller Input/
output
SlgnaIs..................
E. Basic Sequence of
operations
.........................
II.
LASER/SCANNER SYSTEM
.....
A.Outline..
............................
B. Scanning Exposure..
..........
c.Laser Control circuit..
.......
D. ScannerDrive..
..................
III. IMAGE FORMATION SYSTEM.
A.Outline..
............................
B. Printing Process
................
C. High-Voltage Power Supply
IV. PICK-UP/FEED SYSTEM..
.......
A.Outline
..............................
B. Paper Size Detection
.........
C. CassetteFeed..
..................
CONTENTS
GENERAL DESCRIPTION
l-l IV. PART3 OF TIIB PRINTER
........ l-8
l-2 V.
OPERATION
........................... 1-12
l-7
OPERATION AND TIMING
2-l D.
Fixing and Delivery Unit
.... 2-30
2-l
E.
Paper Jam Detection
...... .:. 2-34
V.
SYSTEM INTERFACE..
............ 2-36
2-2
A.Outline..
............................
2-36
B. Operation
..........................
2-37
2-3 C.
Video controller PCB
......... 258
D.
Control panel .................... 2-41
2-4
E.
Self-test.. ...........................
2-42
F.
8tatus/Error Message..
...... 2-43
2-0
VI. POWER SUPPLIES
..................
2-66
2-7
A.
OutlIne.. ............................
2-56
2-7
B.
Protective System .............
2-66
2-8
VII. ENVBLOPE FEEDER..
.............
2-67
2-10 A. Outline of the Electrical
2-13 System..
............................
2-67
2-1s
B.
Pick-up/ Feed Gystem........
2-58
2-1s
C.
Paper Jam Detection..
....... 2-60
2-17
VIII. PAPER FEEDER...................... 2-61
2-23 A. Outline of the Electrical
2-27 System..
............................ 2-61
2-27
B.
Pick-up/Feed system..
...... 2-62
2-28
C.
Paper Jam Detection..
....... 2-62
2-29
CHAPTER 3 THE MECHANICAL SYSTEM
I.
EXTERNALS
...........................
3-l III. PAPER TRANSPORT SYSTEM. S-7
A.Covers and Panels
.............
3-l A.Paper Pick-up Unit.. ........... 3-7
B. Bxkaust Fan..
....................
3-4 B. Cassette pick-up Roller ...... 3-9
C. Control Panel Unit..
...........
3-5
C.
MP Tray Pick-up Roller..
.... 3-9
II.
DRIVESYSTEM..
....................
3-6
D.
Separation Pad.. ................
S-10
A. Drive
Unit.......................... 3-6
E.
Paper Delivery Unit
........... 3-10
B.Main
Motor ........................ 3-8 Iv. EXPOSURE SYSTEM..
.............
3-11

V.
VI.
VII.
I.
II.
III.
1.
II.
III.
N.
I.
II.
III.
A. Laser/Scanner Unit ........... 3-l 1 B. Video Controller PCB.. ....... 3-19
ELECTROSTATIC IMAGING/ C. DC Controller PCB.. ........... 3-20
DEVELOPING/CLEANING
D. pick-up Motor Driver PCB . . 3-21
SYSTEM ................................. 3-12 E. Sensor PCB ........................ 3-21
A.
EP-E Cartridge.. ................. 3-12
F. Power Supply.. ................... 3-22
B. Transfer Charging Roller .... 3-13
G. High-voltage Power
FIXING SYSTEM..
................... 3-14
Supply PCB ........................ 3-23
A. Firing Unit.. ...................... 3-14 VIII. ENVELOPE FEEDER...............
3-24
ELECTRONIC COMPONENTS.. 3-18 IX. PAPER FEEDER
...................... S-28
A. Video Controller Unit.. ....... S-18 X. OTHERR
................................... 3-30
CHAPTER 4 INSTALLATION
CHOOSING A LOCATION.. ....... 4-1 . Storage of Sealed
UNPACRING AND Cartridges
......................... 4-4
INSTALLATION.. ..................... 4-2 B. Storage of Unsealed
STORAGE AND HANDLING OF Cartridges
......................... 4-4
CARTRIDGES
......................... 4-4 C. Iiandling Suggestions ........ 4-5
CHAPTER 5 MAINTENANCE AND SERVICING
PERIODIC REPLACEMENT .Standard Tools .................. 5-2
PARTS
.................................... 5-l B. Special Tools ..................... 5-3
EXPECTED LIVES OF V. LIST OF LUBRICANTS,
CONSUMABLES PARTS..
......... S- 1 CLEANERS.. ........................... 5-4
PERIODIC SERVICING VI. SERVICE CHECKPOINTS
........ 5-5
SCHEDULE.. ........................... 5- 1
VII. MAINTENANCE BY
LISTSOF TOOLS.. .................. 5-2 CUSTOMER.. .......................... 5-7
CHAPTER 6 TROUBLESHOOTING
INTRODUCTION.. .................... 6- 1
A. Initial Check ..................... 6-l
B. BasicProcedure.. ............... 6-2 N.
C. How to use the
Troubleshoot Tables ...... 6-3
EXPLANATION OF SPECIAL
TOOL
..................................... 64
V.
.Printer Driver Tester.. ....... 64
MEASUREMENT AND
VI.
ADJUSTMENT ........................ 6-S
A.Image Adjustment.. ........... 6-S
B. Mechanical Adjustment . . . . . 6-S
C. Electrical Adjustment . . . . ..a. 6-10
IMAGE DEFECTS . . . . . . . . . . . . . . . . . . . . 6-14
A.
Examples of Image Defects 6-14
B. Troubleshooting Image
Defects
. . . . . . . ..I....................
6-15
TROUBLESHOOTlNG
MALFUNCTIONS . . . . . . . . . . . . . . . . . . . . . 6-28
PAPER TRANSPORT
TROUBLESIiOOTING . . . . . . . . . . . . . . 6-42
A. Print Paper Jams . . . . . . . . . . . . . . . 6-42

B. Incomplete Paper Feed..
.... 6-46
VII. LOCATION OF ELECTRICAL
PARTS/FUNCTION.. ................
6-48
.Stitches.. ..........................
6-48
B. Sensors and Solenoids.. .....
6-60
C. Motors and Others.. ...........
6-52
D. PC Boards.. ........................
6-54
E. Connectors.. ......................
6-66
VIII. VARIABLE RESISTORS. LEDS.
TEST PINS, JUMPBRS. AND
SWITCBBS ON pC BOARDS..... 6-68
A. DC Controller PCB . . . . . . . . . . . . .
6-68
B. Ii@-voltage Power
Supply PCB.... . . . . . . . . . . . . . . . . . . . .
6-59
C. Pick-up Motor Driver PCB.. 6-60
D. Paper Feeder Driver PCB.... 6-60
I.
GENERALTIMING CHART..
.... A-l
V. PICK-UP MOTOR DRIVER
....... A-S
II. LIST OF SIGNAL6.. .................
A-3
VI. SENSOR CIRCUIT ...................
A-10
III. GENERAL CIRCUIT DIAGRAM. A-5
VII. PAPER FEEDER DRIVER ........
A-l 1
IV. DC CONTROLLER.. .................
A-6
VIII. ENVELOPB FEEDER DRLVER
.. A-12

.
CHAPTER 1
GENEIUL DESCRIPTION
I.
FEATURES............................. l-1
IV. PARTS OF THE PRINTER........ l-8
II, SPECIFICATIONS........ . . . . . . . . . . . .
l-2
V. OPERATION
. . . . . . . . . . . . . . ..f...........
l-L2
III. A SAFETY INFORMATION..... I-7

1. Non-impact page printer
This non-tmpact (low-noise) printer uses electrophotographic. electronic, and laser technology.
2. High-speed printer
The same size as LBP-1260. it is a high-speed printer realizing a printing speed 1.5 times as
fast [about 12.9 pages of Letter size paper a minute].
3. High print quality through use of fine toner and high resolution (600 dpi)
Toner having a particle size half that of conventional Canon toner and higher resolution (600
dpi) produce clearer images.
4. Easy maintenance
The photosensitive drum. toner, primary charging roller, and drum cleaning unit are combined
into one replaceable assembly called the “EP-E Cartridge”. By the use of the customer-
replaceable cartridge. high printing quality is maintained by replacing the cartridge and simple
cleaning in the printer.
5. Roller charging/transfer system
Instead of the conventional corona system, a charging roller/transfer system is used for the
charging and transfer processes. The charging roller system considerably reduces the ozone
produced by the charging system and the roller transfer system makes paper feeding more
stable.
6. Space-saving front loading for paper feed
Front loading is used to make it easier to load paper. This, along with the bulk-in, multi-
purpose tray, reduces the size of the printer and the space it takes up.
7. Four paper feed methods with various options
Four-way paper feeding is made possible by installing the optional cassette paper feeder
(simply called the paper feeder below) and envelope feeder, in addition to the multi-purpose
tray and cassette. By combining the standard cassette with the paper feeder, up to about 750
sheets of paper can be loaded In both the upper and lower cassettes for continuous printing.
8. Automatic interface change function
The printer has a parallel interface [Centronics) and a serial interface (RS232C). It recognizes
the type (parallel or serial) of data from the computer, and automatically l changes the
interface. (Automatic interface function)
l-l

CHAPTER 1
me
Desktop page printer
Printing method Electrophotography
laser scanning system
Laser
Semiconductor laser
Scanning system Rotating six-faced prism mirror (S&mnlng mirror)
Scanning pitch
H0ri20nti 600 dots/Inch
Vertical 600 raster lines/inch
Photosensitive medium OPC
Charging Roller charging
Exposure Laser scanning
TOneI
Single-component dry toner
Development Toner projection development
Toner supply Included in replaceable EP-E
cartrIdge mhhe cartridge can be used to print
about 6.000 pages ofA4/Letter-size paper. The average print coverage is
a 4% image dot ratio with the prfnt density setting in the middle.)
Paper feed
Multi-purpose tray feed
Cassette feed Crwo cassettes can be used when the paper feeder is
installed.)
TransflX Roller transfer
Separation Curvature: (small drum radius/paper stiffness)
Cleaning Blade
F-w
Heat roller (750 W II20 VII
Print delivery Face-down
l-2

CHAPTER 1
B. Performance
Printing speed
rime for first print
Warm-up (WAIT) time
Print DaDeI
Paper size of multi
purpose tray
Paper size of cassette
Multi-purpose tray
caoacitv
cassette twx
Cassette swxifications
Print delivev
Option
C. Others
About 12.2 pages/min (A4)
About 12.9 pages/min ( Letter]
18.9 s 01’ less iThe amount of time from when the printer receives a
/PRNT slgnal from the video controller when it is ready at an ambient
temperature of 20°C until the deliver of an A4-/Letter-size paper.1
60 s or less ( 120 v power source)
75 s or less (100 v power source)
IThe amount of time elapsed after the printer is turened ON until the
completion of the warn-up time. at an ambient temperature of 20°C with
a rated voltage input.)
Plain paper. labels, OHP film. envelopes
Plain paper from 182 mm X 257 mm to 216 mm X 356 mm (Canon-
approved paper. 60 g/m’ lo 128 g/m’). and above type mentioned above
Plain paper of A4, Legal. Letter. or Executive (Canon-approved paper. 60
g/m2 to 90 g/m*)
Up to 10 mm stack height (about 100 sheets of 80 g/m* paper)
A4. Letter, Universal (Legal, Letter, A4, Executive]
Up to 25 mm stack height (about 250 sheets of 80 g/m’ paper)
Up to 25 mm stack height (about 250 sheets of 80 g/m’ paper)
Envelope feeder and paper feeder
Operating environment
Temperature
Humidity
Atmospheric pressure
Power consumption
10 to 32.5’C (50 to 90.5”F)
20 to 80% RH
760 to 1013 hPa (570 to 760 mmHg)
Max. about 1kW (at an ambient temperature of 20°C and rated voltage
input)
Noise level (DECLARED 1 SOUND POWER LEVEL (lB=lO dB1 1
6.5 B or less (printing)
NOISE EMISSIONS in 4.4 B or less (standby)
accordance with IS0 9296) SOUND PRESSURE LEVEL 51
dB or less (printing)
(Bystander positions)
33 dB or less [standbv)
1 Dimensions
1 416 mm X 414 mm X 295 mm (width X depth X height)
1 Weight
1 About 17 kg (prlnterl. About 1.5 kg (cartridge). About lkg (cassette)
Line voltage requirements lOO- 120 V (50/60 Hz)
(voltage tolerance i 1 G%)
1-3

CHAPTER 1
D. Video controller
Printer control
language
Memory [RAM]
Memory (ROM)
internal fonts
Effective printable area
Optlon card slot
Standard Interfaces
Serial
T
Parallel
Standard: Enhanced PCL (PCL 5e)
Emulation: Optional PostSctiptm
2MB (Expandable to 32 Megabytes in total with optional RAM SIMM)
2 or 4MB (Expandable to 32 Megabytes in total with optional ROM SIMM)
See Table l-1 and I-2.
See FigureI-1.
NOI?
RS-232C. asynchronous. 300. 600. 1200.2400.4800.9600.
19200,
01
38400 baud
Data length: 7 or 8 bits
Parity: If desired
Stop bits: 1 or 2
Handshaking: XON-XOFF. EZTX-ACK, or DTR
S-bit parallel (Centronics standard] interface
E. Envelope feeder (~~~velope Feeder EF-6)
Pick-up speed About 9
envelopes/min
Envelope type COM-10. DL, Monarch,
C5, B5 (recommended envelope)
Envelope size Envelopes from 96mm X
189mm to 188mm X 254mm
capacity
Up to 55 mm stack height (about 75 envelopes)
Power supply
DC24V (Supplied by the printer)
DIIIlenSiOIlS
297 X 293 X 91 mm (width X depth X height)
Weight About 2
kcr
F. Paper feeder (Paper Feeder Unit PF-6)
Cassette type
EP-E Cassette 500 Universal S (Letter. A4. Executive)
EP-E Cassette 500 Universal L (Legal, Letter. A4. Executive)
cassette specifications
Up to 50 mm stack height labout 500 sheets of 80 g/m2 paper)
Power supply
DC24V (Supplied by the printer)
Dimensions 416 X 470 X 134 mm (width X depth X height) Iincluding legal cover)
weight
About 3.9 kg (paper feeder). about 2 kg (universal cassette]
Specifications are subject to change with product improvement.
1-4 .

1000 C0Urll-Z
1003 COUl%X
1004 COUrier
1005 C0lltier
1006 CG Times
1007 CG Times
1008 CG Times
1009 CG Times
1010 Letter Gothic
1011 Letter Gothic
1012 Letter Gothic
1013 CG Omega
1014 CC Omega
1015 CG Omega
1016 CG Omega
1017 coronet
1018 Clarendon
1019 Univers
1020 UniVerS
102 1 Univers
1022 UniVel-S
1023 UIliK!rs
1024 UIllVeK?
1025 Uni%%L-s
1026 UIIiVfXS
1027 Antiqueo1v
1030
Gannond
1031 Gannond
1032
Gannond
r
1033 Gannond
1034 Marlgold
1035 Albertus
1036 Alberta
1046 1 Wingdings
Symbol
set
spachlg
Pitch Point Stroke
[CPI) Size Weight
style OrleIltati0n
Roman-8 Fixed
Scalable
Medium Uptight Portrait
Roman-8 ProportIonal Bold
UmIaht Portrait
Medium Italic Portrait
Bold 1 Italic 1 Portrait
Bold Uprtght Portrait
Medium 1 Italic 1 Portrait
Medium Italic PortrAt
Roman-8 1 ProporttonaJ I
Table l-l
1 Medium I Upright I Portrait 1
l-5

*Fixed Fonts
Qpeface
1
Olientat1on
Symbol Point Stroke
set spacing Size Weight
Roman-8 Fixed 8.5 Medium
Upfight
IS0 Ll Fixed 8.5 Medium Upright
i
PC-8 Fi?Xd 8.5
t
Medium Upright
PC-6DN Fixed ~~_
a.5
._-.-.._
1 lnrwlt
-r--e---
_ ___.-_
Line Printer PC-850 FLwd 16.67 8.5 Medium Updght Portrait
Line Printer LEGAL Fixed 16.67 8.5 Medium Upright Portrait
Line Printer IS0
Ll fied 16.67 8.5 Medium Upright Landscape
Line Printer PC-8 Fixed 16.67 8.5 Medium Upright Landscape
Line Printer PC-8 DN Fixed
Landscape
Portrait
Portrait
P”rtnll*
1 16.671 8.5
1 Medium ( Upright 1
Landscape
I 1cc7I CIC I ,“..-11_.- I ,,__a..l_L I r___l_____
~Font
1050
105 1
1052
1053
1054
1055 1 Line Printer
1 PC-650 1
Fixed , Iu.vt , 0.0
, ,v,cu,uu, , u,,r,gu ,
uir,uscapr
1056 Line Printer
/ LEGAL 1
Fixed 1 16.671 8.5
1
Medium Upright Landscape
i
5mm
f
Len
I
5mm
-f-
Table l-2
“k Top -r”“mb
II
Right
t
Feed-out direction
r3onom Effective printing area
(Image quality is guaranteed in this area.)
Figure l-1
1-6

A. Iiandllng the Laser/Scanner Unit
The laser/scanner unit emits invisible
laser beam. Never disassemble the unit;
the reflected beam. although invisible, can
possibly damage your eyes. The unit
cannot be adjusted in the field. The
following label is attached to the cover of
the unit:
1-7

C-ER 1
A. Erternpl View
1. Rlnter
Figare l-5
1: upper cover
2: Face-down tray
3: Right cover
4: Control panel
5: Power switch
6: Cassette
7: Multi-purpose tray
6: Test print switch
9: Delivery cover
IO: Power receptacle
11: Parallel Lnterface connector
12: Serial interface connector
13: Cleaning brush
14: Paper access door
1-8

CHAPTER 1
2. Paper feeder
1: Paper feeder
2: Cassette 1500 sheets can be stored)
1: Envelope side guide
2: Extension tray
3: weight
Figure 1-7
1-9

CHAPTER1
B. Cross Sectional View
1. Printer
1: Delivery rollers
2: Laser/scanner unit
3: EP-E cartridge
4: Control panel
5: Multi-purpose tray
6: Cassette
7: Multi-purpose tray pick-up roller
8: Separation pad
9: Oblique rollers
10: Cassette pick-up roller
11: Developing cylinder
12: Transfer charging roller
13: Photosensitive drum
14: Primary charging roller
15: Upper fixing roller
16: Lower fbdng roller
l-10

2. Envelope feeder
Fignre 1-9
1: Feed roller
2: Oblique roller
3: Separation roller pressure spring
4: Separation guide
5: Separation rollers
6: Pick-up rollers
l-11

CHAPTER 1
k The Operator Panel
You use the operator panel to perform basic printer operations, make printer configuration
changes your software application cannot control, identify available typefaces, and check the
status of the printer.
I
READY ALARM DATA
on0
ONLINE FORM FEED RESET
I
I
The operator panel consists of the message/menu display window, eight indicator lights, and
seven menu and operation keys.
1. Message/Menu Display Window
The message/menu display window can display as many as 16 characters. It displays menu
items you can select, and messages that describe the status of the printer and error condittons.
This chapter describes the menu items you can display in the window. See Chapter 6
Troubleshooting, for information about the types of messages that may appear in the window.
1-12

CHAPTER1
2. Indicator Lights
The indicator lights provide status information about the
meanings depending on whether they are on. off. or flashing.
printer. The lights have different
Figure l-11
Indicator
light Mode Description
READY On
Off
Flashing
ALAF3vl On
Off
DATA
On
Off
ON LINE On
Off
Flashing
The printer is ready to print.
An error or attendance message appears in the display.
The printer is receiving data.
An error has occurred and printing is disabled. An error or
attendance message appears in the display.
No error has occurred.
Print data is currently stored in the printer1 s buffer.
No buffered data is in the printer.
The printer is ready to accept nd
print data from the computer
(on-line status].
The printer cannot accept print data from the computer [off-line
status). When the printer is off-Hne. you can use all keys on the
operator panel to operate the printer.
You press ON LINE to set the printer off-line while a page is
printing. This ltght flashes while the printer completes printing
the page.
1-13

The paper input source indicators are:
ENVELOPE FEEDER
STANDARD CASSETTE
LOWER CASSEXTE
(PAPER FEEDER UNIT)
MULTI-PURPOSE TRAY
Flgun 1-12
Indicator light Mode Description
Envelope
Feeder
Multi-purpose
tray
Standard
cassette
Lower
cassette
On
Flashing
On
Flashing
On
Flashing
On
Flashing
The optional Envelope Feeder is the input source.
The optional Envelope Feeder is selected, but does not
contain envelopes.
The multi-purpose tray is the input source.
The multi-purpose tray is selected, but does not contain
paper.
The paper cassette tray is the input source.
The paper cassette tray is selected, but does not contain
paper.
The optional Paper Feeder Unit is the input source.
The optional Paper Feeder Unit is selected, but does not
contain paper.
1 - 14