Citizen CBM-262 Type II User manual

LINETHERMAL PRINTER
MODEL CBM-262
Rev.1.00 First created June.18th,1996
Service Manual

i
REVISION
Rev.No. Date Content
Rev. 1.00 June.18,1996 First created

ii
CONTENTS
Chapter 1
Disassembly
Reassembly
Maintenance
Chapter 2
Circuit Diagrams
Chapter 3
Parts Lists
Chapter 4
Appendix

CHAPTER 1
DISASSEMBLY
REASSEMBLY
MAINTENANCE

CHAPTER 1
Disassembly,Reassembly,Maintenance
Contents
1. Cautions Concerning Maintenance........................................................................1-1
2. Supplying Oil ...........................................................................................................1-2
3. Maintenance Tools ...................................................................................................1-3
4. Other .........................................................................................................................1-3
5. Removing the Printer Covers .................................................................................1-4
■ Removing the Cover R ..........................................................................................1-4
■ Removing the Cover J ...........................................................................................1-4
6. Removing the Cover Window.................................................................................1-4
7. Removing the Journal Cover Key..........................................................................1-5
8. Removing the Spool and Writing Plate .................................................................1-6
■ Removing the Spool ..............................................................................................1-6
■ Removing the Writing Plate................................................................................... 1-6
9. Removing the Case L...............................................................................................1-7
10. Removing the Near End Switch Subassembly ......................................................1-8
11. Removing the Pressure Roller ................................................................................1-8
12. Removing the Paper Near End Sensor Subassembly ...........................................1-9
13. Removing the Receipt and Journal Printer Units and
Winder Drive Subassembly ..................................................................................1-10
■ Removing the Receipt Printer Unit......................................................................1-10
■ Removing the Journal Printer Unit ......................................................................1-10
■ Removing the Winder Drive Subassembly .......................................................... 1-10
14. Removing the Spool Gear, Winder Pulley and Spool Idle Gear........................ 1-11
15. Removing the Bottom Plate ..................................................................................1-12
16. Removing the Rubber Feet and DIP Switch Cover ............................................1-12
17. Removing the Bracket R (Receipt Side) ..............................................................1-13
■ Removing the Auto Cutter ...................................................................................1-13
■ Removing the Auto Cutter Paper Guide ..............................................................1-13
■ Removing the Relay Board.................................................................................. 1-13
■ Removing the Cutter Lock Lever ........................................................................1-13
■ Removing the Printer Mechanism .......................................................................1-14
■ Removing the Operation Panel Board and the Cover Open Switch Board ......... 1-14
18. Removing the Bracket J (Journal Side)...............................................................1-15
■ Removing the Printer Mechanism .......................................................................1-15
■ Removing the Relay Board.................................................................................. 1-15
19. Cautions Concerning Reassembly and Adjustments..........................................1-16
■ Cautions When Reassembling the Case L ...........................................................1-16
■ Cautions When Reassembling the Winder Drive Subassembly ..........................1-17
■ Adjusting the Near End Switch Subassembly......................................................1-18
■ Adjusting the Timing Belt....................................................................................1-19

CBM-262 SERVICE MANUAL
1-1
1 Disassembly,Reassembly,Maintenance
1. Cautions Concerning Maintenance
Warning
(1) When disassembling, reassembling or adjusting the printer, disconnect theAC adapter from the
printer.
(2) When replacing a fuse, switch off the power switch first.
(3) A fuse is used for fire prevention. Be sure to use the same type when replacing the fuse.
Exercise caution regarding the following items when performing maintenance.
Caution
(1) Do not disassemble and reassemble, or make adjustments to the printer unnecessarily when
there is no abnormal or malfunctioning condition. In particular, do not loosen any of the
installation screws for any of the printer’s components unnecessarily.
(2) When finishing the maintenance, always check to make sure there is nothing abnormal before
switching on the power.
(3) By all means avoid printing without paper set in the printer.
(4) Make sure the printer has been set correctly.
(5) Do not place items on top of the cover or lean anything against it during maintenance or during
printer operetion.
(6) Be careful not to leave parts or screws, etc. used during maintenance lying around loose inside
the printer.
(7) When handling printed circuit boards, do not wear gloves which can easily generate a static
charge. The CPU, RAM, ROM and other IC’s can be destroyed by static electricity, so do not
touch the leads or window carelessly.
(8) Do not place the printed circuit boards directly on equipment or on the floor.
(9) During disassembly and reassembly, check wiring cords for damage, and do not exert undue
force on the wires during installation.

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1-2
2. Supplying Oil
(1) Oiling Intervals
This printer is maintenance free, and supplying of oil is unnecessary under conditions of normal
use. Supply oil when disassembling, reassembling, replacing parts or cleaning.
(2)Types of Oil
Froil Grease, Cat. No.G-311S, Kanto Kasei Kogyo (Co.,Ltd.)
Epiknock Grease, Cat. No.AP-1, Nihon Sekiyu (Co.,Ltd.)
(3) Oil Supply Quantities
Reper to the following table when supplying oil.
No.
1
2
3
Place Oiled
Spool Gear Shaft
Spool Idle Gear Shaft
Spool spring insert of
spool idle gear
Both ends of paper
holder roller
Circumference of the vibrator
unit.
Type of Oil
Epiknock Grease
Epiknock Grease
Froil Grease
Amount Supplied
0.2 mm width,
3 places.
0.2 mm width,
entire circumference.
0.2 mm width,
3 places.

CBM-262 SERVICE MANUAL
1-3
3. MaintenanceTools
The following maintenance tools are necessary when replacing components, etc. in the printer in
field service.
4. Other
For disassembly and reassembly of the printer unit (following), refer to the LT-283 Series Service
Manual.
No.
1
2
3
4
5
6
7
8
9
10
Name
No.1(+)Screwdriver
(Shaft length: 200 mm)
No.2(+)Screwdriver
(Shaft length: 200 mm)
(–)Screwdriver
Tweezers
Tester
Needle Nose Pliers
(+)Screwdriver:
Precision Screwdriver
Dial Tension Gauge
Socket Wrench (Small)
Opposite side distance: 8 mm
Socket Wrench (Large)
Opposite side distance: 14 mm
Quantity
1
1
1
1
1
1
1
1
1
1
Use
For M3, M4 mm screws
For M2-M2.6 mm screws
For M6
For M12
Remarks

CBM-262 SERVICE MANUAL
1-4
5. Removing the Printer Covers
■ Removing the Cover R
1) Open the Cover R.(→①)
2) Pull it out toward the front.(→➁)
■ Removing the Cover J
1) Open the Cover J.(→①)
2) Open it further toward the back and pull it out.(→➁)
6. Removing the CoverWindow
Press on the center of the cover window,
then remove it while deflecting it.

CBM-262 SERVICE MANUAL
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7. Removing the Journal Cover Key
If the optional cover key is set, remove the key by the following procedure.
1) Take out the hexagonal nut (M6).
2) Remove the key lever.
3) Take out the hexagonal nut (M12).
4) Remove the key plate.
5) Pull the key out toward the top.

CBM-262 SERVICE MANUAL
1-6
8. Removing the Spool and Writing Plate
■ Removing the Spool
1) Remove the spool by lifting it in the arrow ①direction.
2) Take the spool partner out in the arrow ➁direction.
■ Removing theWriting Plate
1) Press the arrow mark ③on the writing plate to release the lock.
2) Pull the writing plate out while pushing on the snap-in tabs in the arrow ④direction.

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1-7
9. Removing the Case L
1) Take out the four screws holding the case L.
2) Set the printer’s paper release lever toward the rear.
3) Remove the case L.
Note
When removing the case L, be careful not to pull on or break any cables.
4) Loosen the ground wire screws (2 pcs).
5) Disconnect the connectors (2 pcs).
Note
Do not disconnect them by pulling on the wires.

CBM-262 SERVICE MANUAL
1-8
10. Removing the Near End Switch Subassembly
1) Using a coin, etc. loosen the screw holding the near end switch subassembly.
2) Remove the near end switch subassembly in the arrow direction.
Note
Near end switch subassemblies are located in two places, on the receipt side and on the journal
side.
11. Removing the Pressure Roller
Using a precision screwdriver or similar tool, push the pressure roller out from the rear.

CBM-262 SERVICE MANUAL
1-9
12. Removing the Paper Near End Sensor Subassembly
1) Remove the screw used to set the ground wire.
2) Remove the spring holding the near end switch lever.
3) Remove the near end switch lever.
4) Take out the two screws holding the paper near end sensor subassembly (microswitch).

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13. Removing the Receipt and Journal Printer Units and
Winder Drive Subassembly
■ Removing the Receipt Printer Unit
1) Take out the two screws holding the printer unit.
2) Disconnect Cable 1, Head Cable 1 and the Operation Panel Cable from the printer unit.
Note
Be careful not to pull on the connectors and cables so as to break them.
3) Remove the printer unit.
Note
For disassembly and reassembly of the printer unit, refer to the LT-283 Series Service Manual.
■ Removing the Journal Printer Unit
1) Take out the two screws holding the printer unit.
2) Disconnect Cable 2 and Head Cable 2 from the printer unit.
Note
Be careful not to pull on the connectors and cables so as to break them.
3) Remove the printer unit.
Note
For disassembly and reassembly of the printer unit, refer to the LT-283 Series Service Manual.
■ Removing theWinder Drive Subassembly
1) Remove the timing belt.
2) Take out the screw holding the winder drive subassembly.
3) Remove the winder drive subassembly.

CBM-262 SERVICE MANUAL
1-11
:Cautions in Reassembly
14. Removing the Spool Gear,Winder Pulley and
Spool Idle Gear
1) Remove the E-ring holding the spool gear.
2) Take off the spool gear.
3) Remove the E-ring holding the winder pulley.
4) Take off the winder pulley.
5) Take off the spool idle gear.
6) Take hold of the hook of the spool spring with a pair of tweezers, then turn the spool idle gear in
the arrow direction ①(the direction in which the spring becomes loose) and remove the spool
spring.
Note
1) Assemble the spool spring with the hook toward the front.
2) Align the slit in the winder pulley with the hook of the spool spring to assemble.

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15. Removing the Bottom Plate
1) Take out the two screws holding the bottom plate.
2) Disconnect the cables connected to the main circuit board.
3) Take out the four screws used to mount the main circuit board.
4) Take out the two screws holding the interface connector.
5) Remove the main circuit board in the arrow direction while lifting up the power switch side of
the printer.
16. Removing the Rubber Feet and DIP Switch Cover
1) Take out the screws holding the rubber feet.
2) Take out the two screws holding the DIP switch cover.

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17. Removing the Bracket R (Receipt Side)
■ Removing the Auto Cutter
1) Take out the two screws holding the auto cutter.
2) Remove the auto cutter upward.
3) Disconnect the connector connecting the auto cutter and the relay board.
■ Removing the Auto Cutter Paper Guide
1) Take out the four screws holding the auto cutter paper guide.
2) Remove the auto cutter paper guide.
■ Removing the Relay Board
1) Take out the screw holding the relay board.
2) Remove the relay board.
■ Removing the Cutter Lock Lever
1) Take out the screw holding the cutter lock lever.
2) Remove the cutter lock lever.

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■ Removing the Printer Mechanism
1) Take out the two screws holding the printer mechanism.
2) Remove the printer mechanism upward.
3) Take out the screw used to attach the ground wire.
4) Disconnect the connector connecting the printer mechanism and the relay board.
■ Removing the Operation Panel Board and the Cover Open Switch Board
1) Take out the two screws holding the operation panel board.
2) Take out the screw holding the cover open switch board.
3) Remove the operation panel and cover open switch board.

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18. Removing the Bracket J (Journal Side)
■ Removing the Printer Mechanism
1) Take out the two screws holding the printer mechanism.
2) Remove the printer mechanism upward.
3) Take out the screw used to attach the ground wire.
4) Disconnect the connector connecting the printer mechanism and the relay board.
■ Removing the Relay Board
1) Take out the screw holding the relay board.
2) Remove the relay board.