Tec B-490 series User manual

PRINTED IN JAPAN

TEC Barcode Printer

B-490 SERIES

Document No. EO18-33011

Original Sep., 2001

(Revised )

Maintenance Manual

NOTES: 1. Manual instructions must be followed when installing option kits or adding cables

to avoid system failures and to insure proper performance and operation.

2. Failure to follow manual instructions or any unauthorized modification,

substitution or change to this product will void the limited product warranty.

WARNING!

Follow all manual instructions. Failure to do so could create safety hazards such as fire or

electrocution.

EO18-33011

(Revision Date: Mar. 30, 2004)

TABLE OF CONTENTS

Page

1. UNPACKING ----------------------------------------------------------------------------------------------1- 1

1.1 PROCEDURE --------------------------------------------------------------------------------------------1- 1

1.2 CHECK ----------------------------------------------------------------------------------------------------1- 2

1.3 PRECAUTION FOR IN TALLATION ----------------------------------------------------------------1- 3

2. MAJOR UNIT REPLACEMENT ---------------------------------------------------------------------2- 1

2.1 LUBRICATION---------------------------------------------------------------------------------------------2- 1

2.2 REMOVING THE IDE COVER AND OPENING THE TOP COVER ------------------------2- 2

2.3 REPLACING THE OLENOID-------------------------------------------------------------------------2- 3

2.4 REPLACING THE PRINT HEAD ----------------------------------------------------------------------2- 6

2.5 REPLACING THE CPU PC BOARD -----------------------------------------------------------------2- 7

2.6 REPLACING THE I/O PC BOARD--------------------------------------------------------------------2- 8

2.7 REPLACING THE EXPAN ION I/O PC BOARD-------------------------------------------------2-10

2.8 REPLACING THE RIBBON MOTOR --------------------------------------------------------------2-11

2.9 REPLACING THE TEPPING MOTOR (PRINT BLOCK)--------------------------------------2-13

2.10 REPLACING THE TEPPING MOTOR ( TRIP BLOCK)--------------------------------------2-14

2.11 REPLACING THE PLATEN ---------------------------------------------------------------------------2-15

2.12 REPLACING THE FEED ROLLER (PRINT BLOCK)--------------------------------------------2-16

2.13 REPLACING THE FEED ROLLER ( TRIP BLOCK)--------------------------------------------2-17

2.14 RELACING THE PINCH ROLLER (PRINT BLOCK) --------------------------------------------2-18

2.15 REPLACING THE PINCH ROLLER ( TRIP BLOCK)-------------------------------------------2-20

2.16 REPLACING THE MEDIA EN OR ---------------------------------------------------------------2-21

2.17 REPLACING THE RIBBON BACK TEN ION BLOCK------------------------------------------2-22

2.18 REPLACING THE P UNIT AND REACTOR-----------------------------------------------------2-23

2.19 REPLACING THE BATTERY -------------------------------------------------------------------------2-25

3. INSTALLATION PROCEDURE FOR THE OPTIONAL EQUIPMENT --------------------3- 1

3.1 PCMCIA INTERFACE BOARD (B-7708-PC-QM)-------------------------------------------------3- 1

3.1.1 Packing List ---------------------------------------------------------------------------------------3- 1

3.1.2 Installation Procedure --------------------------------------------------------------------------3- 1

4. TROUBHESHOOTING ............................................................................................... 4- 1

5. PERIODIC MAINTENANCE PROCEDURE ------------------------------------------------------5- 1

5.1 OUTLINE OF THE PERIODIC MAINTENANCE---------------------------------------------------5- 1

5.2 PAPER GUIDE CLEANING AND REMOVAL OF JAMMED PAPER-------------------------5- 2

6. SYSTEM MODE------------------------------------------------------------------------------------------6- 1

6.1 OPERATION PANEL-------------------------------------------------------------------------------------6- 1

6.2 OVERVIEW-------------------------------------------------------------------------------------------------6- 2

6.3 RE ET MODE---------------------------------------------------------------------------------------------6- 3

EO18-33011

(Revision Date: Mar. 30, 2004)

6.4 ELF-DIAGNO TIC TE T -----------------------------------------------------------------------------6- 4

6.4.1 Ribbon Type election -------------------------------------------------------------------------6- 4

6.4.2 Maintenance Counter/Parameter etting Printing Out----------------------------------6- 5

6.4.3 elf-Diagnostic Test and Result Print Out -------------------------------------------------6- 8

6.4.4 Print Head Element Check -------------------------------------------------------------------6-12

6.5 PARAMETER ETTING -------------------------------------------------------------------------------6-13

6.5.1 Character Code election --------------------------------------------------------------------6-14

6.5.2 Zero Font Code election --------------------------------------------------------------------6-17

6.5.3 Baud Rate election ---------------------------------------------------------------------------6-17

6.5.4 Data Length election-------------------------------------------------------------------------6-18

6.5.5 Parity election ---------------------------------------------------------------------------------6-18

6.5.6 Transmission Control Code election -----------------------------------------------------6-18

6.5.7 LCD Message election ----------------------------------------------------------------------6-19

6.5.8 Ribbon aving Function election----------------------------------------------------------6-20

6.5.9 Control Code election------------------------------------------------------------------------6-20

6.5.10 Ribbon Type election ------------------------------------------------------------------------6-21

6.5.11 Feed Key Function election ----------------------------------------------------------------6-21

6.5.12 Euro Code election---------------------------------------------------------------------------6-22

6.5.13 Auto Print Head Check election-----------------------------------------------------------6-22

6.5.14 Centronics Interface ACK/BU Y Timing election -------------------------------------6-23

6.5.15 Web Printer Function election -------------------------------------------------------------6-23

6.5.16 KB-80 Optional Keyboard Connect etting-----------------------------------------------6-24

6.5.17 Ribbon Near End etting ---------------------------------------------------------------------6-24

6.5.18 Expansion I/O OUT1 ignal Function etting -------------------------------------------6-25

6.5.19 Expansion I/O ignal Level etting --------------------------------------------------------6-25

6.5.20 Expansion I/O Inline Mode Function etting ---------------------------------------------6-25

6.6 PRINTER PARAMETER FINE ADJU TMENT ---------------------------------------------------6-26

6.6.1 Feed Length Fine Adjustment ---------------------------------------------------------------6-27

6.6.2 trip Position Fine Adjustment --------------------------------------------------------------6-28

6.6.3 Back Feed Length Fine Adjustment--------------------------------------------------------6-29

6.6.4 X Axis Fine Adjustment -----------------------------------------------------------------------6-30

6.6.5 Print Tone Fine Adjustment (Thermal Transfer/Thermal Direct Print)--------------6-32

6.6.6 Ribbon Motor Voltage Fine Adjustment (Feed/Rewind Motor)-----------------------6-33

6.6.7 Threshold Manual Fine Adjustment (Black Mark/Feed Gap ensor)---------------6-34

6.6.8 trip Motor Driving peed Fine Adjustment----------------------------------------------6-34

6.7 TE T PRINT ----------------------------------------------------------------------------------------------6-35

6.7.1 pecifying the Print Condition for the Test Print ----------------------------------------6-36

6.7.2 Test Print Pattern election ------------------------------------------------------------------6-39

6.7.3 lant Line (1 dot) -------------------------------------------------------------------------------6-39

6.7.4 lant Line (3 dots) ------------------------------------------------------------------------------6-40

6.7.5 Characters ---------------------------------------------------------------------------------------6-40

6.7.6 Barcode-------------------------------------------------------------------------------------------6-41

6.7.7 Non-Printing -------------------------------------------------------------------------------------6-41

6.7.8 Factory Test--------------------------------------------------------------------------------------6-42

6.7.9 Auto Print -----------------------------------------------------------------------------------------6-42

EO18-33011

(Revision Date: Mar. 30, 2004)

6.8 EN OR ADJU TMENT ------------------------------------------------------------------------------6-43

6.8.1 ensor tatus Display-------------------------------------------------------------------------6-44

6.8.2 Black Mark ensor Adjustment -------------------------------------------------------------6-44

6.8.3 Feed Gap ensor Adjustment ---------------------------------------------------------------6-45

6.8.4 Black Mark ensor Adjustment (No Paper) ----------------------------------------------6-45

6.8.5 Feed Gap ensor Adjustment (No Paper)------------------------------------------------6-45

6.9 RAM CLEAR ----------------------------------------------------------------------------------------------6-46

6.9.1 RAM Clear Menu election ------------------------------------------------------------------6-46

6.9.2 No RAM Clear-----------------------------------------------------------------------------------6-47

6.9.3 Maintenance Counter Clear------------------------------------------------------------------6-47

6.9.4 Printer Parameter Clear-----------------------------------------------------------------------6-47

6.10 IP ADDRE ETTING --------------------------------------------------------------------------------6-49

6.11 DUMP MODE ---------------------------------------------------------------------------------------------6-51

6.12 BA IC ETTING -----------------------------------------------------------------------------------------6-53

6.12.1 Basic pecification election Mode--------------------------------------------------------6-53

6.12.2 Basic File Browser -----------------------------------------------------------------------------6-54

6.12.3 Basic Trace election Mode -----------------------------------------------------------------6-54

6.13 REAL TIME CLOCK ETTING ------------------------------------------------------------------------6-55

6.13.1 Date etting--------------------------------------------------------------------------------------6-56

6.13.2 Time etting -------------------------------------------------------------------------------------6-56

6.13.3 Battery Voltage Check etting --------------------------------------------------------------6-57

. ON LINE MODE ------------------------------------------------------------------------------------------ - 1

7.1 THRE HOLD ETTING---------------------------------------------------------------------------------7- 1

8. PRINTER OPERATION --------------------------------------------------------------------------------8- 1

8.1 OVERVIEW-------------------------------------------------------------------------------------------------8- 1

8.2 IN TALLING THE PRINTER DRIVER -------------------------------------------------------------8- 1

8.2.1 ystem Requirements--------------------------------------------------------------------------8- 2

8.2.2 Driver installation --------------------------------------------------------------------------------8- 2

8.2.3 Uninstalling the TEC B-492 Printer Driver -------------------------------------------------8- 6

9. PROGRAM DOWNLOAD -----------------------------------------------------------------------------9- 1

9.1 OUTLINE OF FEATURE ------------------------------------------------------------------------------9- 1

9.2 IN TALL PROGRAM IN TALLATION---------------------------------------------------------------9- 1

9.2.1 ystem Requirements--------------------------------------------------------------------------9- 1

9.2.2 etup -----------------------------------------------------------------------------------------------9- 2

9.3 FIRMWARE DOWNLOAD ------------------------------------------------------------------------------9- 4

CAUTION!

1. This manual may not be copied in whole or in part without prior written permission of TOSHIBA

TEC.

. The contents of this manual may be changed without notification.

3. Please refer to your local Authorised Service representative with regard to any queries you

may have in this manual.

by TO HIBA TEC CORPORATION

570 Ohito, Ohito-cho, Tagata-gun, hizuoka-ken, JAPAN

1. UNPACKING EO18-33011

1.1 PROCEDURE

1- 1

1. UNPACKING

1.1 PROCEDURE

1) Open the carton.

2) Unpack the accessories from the carton.

3) Unpack the pads and the printer from the carton.

ig. 1-1

Unpacking Instruction

op Pad

PSU Top Pad

wner’s Manual

D-ROM

Side Pad 2

B-492 Printer

SU Bottom

Accessory

PS Unit

Side Pad 1

ottom Pad

arton

1. UNPACKING EO18-33011

1.2 CHECKS

1- 2

4) Remove the tapes from the top cover and pinch roller release lever.

5) Cut the band to separate the printer from the bottom pad.

6) Open the top cover, and remove the tapes from the ribbon shaft holder plate and ribbon shaft.

7) Install the printer after reading the following precautions.

(1) This printer does not include a label holder or label supply unit. Back tension to the label must

be around 300g, as excessive back tension may affect the label feed accuracy.

(2) Also this printer does not include a label’s backing paper take up unit. Backing paper take up

torque must be around 200g, as excessive torque may affect the label feed accuracy.

1.2 CHECKS

1) Check for damage or scratches on the machine.

2) Confirm that none of the accessories are missing.

NOTE: Keep the carton and pads for later transport.

Top Cover

ape

Band

inch Roller Release Lever

Tape

ottom Pad Fig. 1-2

ape

Ribbon Shaft

ape

ibbon Shaft Holder Plate

ape

ig. 1-3

1. UNPACKING EO18-33011

(Revision Date: Mar. 30, 2004)

1.3 PRECAUTION FOR INSTALLATION

1- 3

1.3 PRECAUTION FOR INSTALLATION

The printer with the serial number of 3Txxxxxx or later is provided with a battery for the real time clock.

However, when the printer is delivered, this battery has not been connected to the CPU PC board.

Therefore, it is necessary to connect the battery harness to the CPU PC board to enable the real time

clock function.

1) Remove the side cover from the printer. (Refer to Section 2.2.)

2) Remove the protection tape from the battery harness connector.

3) Connect the battery harness, secured with the cable band together with the I/O harness, to CN8

on the CPU PC board.

4) Write down the starting date of the lithium battery use on the battery sticker for the indication of

replacement.

5) After connection, return the side cover to the printer.

6) Refer to Section 6.4 and perform a self-diagnostic test. Confirm that the “Battery” on the

diagnostic test print is “OK”.

7) Refer to Section 6.13 and set the real time clock function.

NOTES: 1. The life of the lithium battery in this machine is about 2 years.

2. While the printer is turned on, the lithium battery power is not consumed.

3. Regarding the lithium battery replacement procedure, please refer to the Maintenance

Manual, Section 2.19.

Fig. 1-4

CPU PC Board

Battery Harness

Cable Band

I/O Harness

CN8

Battery Sticker

Side Cover

Fig. 1-5

2. MAJOR UNIT REPLACEMENT EO18-33011

2.1 LUBRICATION

2- 1

2. MAJOR UNIT REPLACEMENT

In this document all procedures for the major unit replacement are explained using the B-492L type.

The B-492L type and the B-492R type are symmetrically designed, however, the orientation or location

of some parts are different. Care must be taken not to reassemble the printer incorrectly. Failure to do

this may cause a printer failure.

Also, take care not to pinch the harnesses with the covers when reassembling.

2.1 LUBRICATION

All machines are generally delivered in their best condition. Efforts should be made to keep them that

way. Lack of oil, or the presence of debris or dust, may cause an unexpected failure. To maintain in

optional operating condition, periodically clean the machine and apply the proper kind of oil to each

part in which lubrication is needed.

Although the frequency of lubrication varies according to how often the machine is used, as a minimum

it is necessary to lubricate before any part becomes dry. It is also necessary to wipe off excessive oil

or it will collect dirt.

WARNING!

Prior to major unit replacement, turn OFF the power of the Power Supply Unit and disconnect the

AC Power Cord. Then, disconnect the DC Power Cord from the printer.

CAUTION!

1. Lubrication: Should be performed during parts replacement

2. Type of lubricant: FLOIL G-488: 1 Kg can. (Parts No. 19454906001)

3. Do not spray the inside of the printer with lubricants. Unsuitable oil can damage the mechanisms.

CAUTION!

1. Never remove the mounting plate from the ribbon motor (Feed). Doing so will change its

adjustment. (See Section 2.8.)

2. Never remove the four screws painted red on the side of the print block. Doing so will change

their adjustment.

Side view of the print block

NEVER remove these screws.

Fig. 2-1

2. MAJOR UNIT REPLACEMENT EO18-33011

2.2 REMOVING THE SIDE COVER AND OPENING THE TOP COVER

2- 2

HEAD

2.2 REMOVING THE SIDE COVER AND OPENING THE TOP COVER

This section describes how to remove the side cover and open the top cover, which is necessary

before performing any parts replacement.

1) Remove the two D-3x5 screws and eight B-3x6 screws to release the side cover.

2) Disconnect the harness of the fan motor attached to the side cover from CN2 on the I/O PC board

(for the R type, disconnect from CN4). Then remove the side cover from the printer.

3) Open the top cover.

4) Turn the head lever and pinch roller lever counterclockwise to open the print head and pinch roller.

Then open the ribbon shaft holder plate.

5) After completing the parts replacement, attach the side cover and close the top cover in reverse

order of disassembly.

Fan Motor Harness Fig. 2-2

B-3x6 Screw

Side Cover D-3x5 Screw

Head Lever Ribbon Shaft Holder Plate

Fig. 2-3

CN2

CN4

Pinch Roller Lever

I/O PC Board

Top Cover

2. MAJOR UNIT REPLACEMENT EO18-33011

2.3 REPLACING THE SOLENOID

2- 3

2.3 REPLACING THE SOLENOID

1) Open the top cover, and turn the head lever and pinch roller lever counterclockwise to open the

print head and pinch roller. Then, open the ribbon shaft holder plate. (Refer to Section 2.2.)

2) Before removing the ribbon stopper, check its attaching orientation for later installation. Remove

the ribbon stopper from the ribbon shaft (ribbon rewind side).

3) Remove the two SMW-4x8 screws and disconnect the harness from CN1 on the RSV PC board to

detach the solenoid unit from the printer.

4) Remove the two SMW-3x5 screws and disconnect the solenoid harness from CN2 on the RSV PC

board to detach the solenoid.

NOTES: Remove any dust that appears during removal or installation because it may affect the print

quality.

Ribbon Shaft

SMW-4x8 Screw

Ribbon Stopper

Fig. 2-4

CN2 (2 pins)

Solenoid Attachment

Plate

CN1 (3 pins)

RSV PC Board

Fig. 2-5

Solenoid

Solenoid Attachment Plate

SMW-3x5 Screw

RSV PC Board

2. MAJOR UNIT REPLACEMENT EO18-33011

2.3 REPLACING THE SOLENOID

2- 4

5) Replace the solenoid and attach it to the solenoid attachment plate.

6) Assemble the solenoid unit so that the head up link engages the spring pin.

7) Temporarily secure the solenoid ass’y with the two SMW-4x8 screws.

8) Turn the head lever to close the print head.

9) Install the solenoid ass’y adjusting the print head position in the following procedure.

Fig. 2-6

Solenoid

Sprin

Head Up Link

!',$* 9

+($' 83 $'-867

62/(12,' 21«

!)25 )$&725<

[RESTART] key

[PAUSE] key

!)25 )$&725<

Turn the power ON while pressing and holding the [FEED] and [PAUSE] keys.

About 10 seconds the solenoid turns on and the

print head becomes open state. During this time

make the following adjustment.

About 10 seconds later, the solenoid

turns off and the display changes to

“<8>FOR FACTORY”

2. MAJOR UNIT REPLACEMENT EO18-33011

2.3 REPLACING THE SOLENOID

2- 5

0.5 ~ 1.0 mm

Move the solenoid attachment plate while measuring a clearance between the print head and the

platen with a scale so as not to touch the print head with it. Secure the solenoid ass’y where the

clearance between the print head and the platen is 0.5 to 1.0 mm and distances A and B are equal.

Moving the solenoid ass’y in the direction of black arrow causes the print head position higher. Moving

the solenoid ass’y in the direction of white arrow causes the print head position lower.

Fig. 2-7

Platen

SMW-4x8 Screw

Solenoid Attachment

Print Head

SMW-4x8 Screw

Scale

CAUTION!

Do not insert a scale or a clearance gauge between the print head and the platen. Doing so may

damage the print head element, causing a print failure such as missing dot.

2. MAJOR UNIT REPLACEMENT EO18-33011

2.4 REPLACING THE PRINT HEAD

2- 6

2.4 REPLACING THE PRINT HEAD

1) Open the top cover. Turn the head lever and pinch roller lever counterclockwise to open the print

head and pinch roller. Then, open the ribbon shaft holder plate. (Refer to Section 2.2.)

2) Turn the head lever clockwise to lower the print head. Remove the two SM-4x8 screws through

the holes in the print block.

3) Turn the head lever counterclockwise and disconnect the two harnesses to detach the print head

from the print block.

4) Replace the print head with a new one, and connect the harnesses.

5) Turn the head lever clockwise and secure the print head with the screws through the holes.

6) After completing the reassembly, perform a print test to check the print quality.

(Refer to Section 6.7.) If the print quality is poor or the ribbon wrinkles, fine adjust the print head

position by loosening the SM-4x8 and SM-3x6 screws, and then perform a print test again.

Fig. 2-8

SM-4x8 Screw

Print Head

CAUTION!

1. NEVER touch the element when handling the print head.

2. NEVER touch the connector pins as static electricity discharges can damage the print head.

3. NEVER remove the two screws painted red from the print block.

4. NEVER remove the print block from the printer, as it requires the use of a special jig for

correct adjustment of position when reassembling.

5. Care must be taken not to damage the print head element during installation by hitting the

print head against the printer body, by scratching the element with a tool, etc.

Harness Head Lever

Print Block

Never remove the

red screws.

Head Bracket

SM-3x6 Screw

SM-4x8 Scre

Print Head

Head Lever

Print Block

As viewed from the top of the print block

Fig. 2-9

2. MAJOR UNIT REPLACEMENT EO18-33011

(Revision Date: Mar. 30, 2004)

2.5 REPLACING THE CPU PC BOARD

2- 7

2.5 REPLACING THE CPU PC BOARD

1) Remove the side cover from the printer. (Refer to Section 2.2.)

2) Remove the two B-3x6 screws and two hex. bolts which secure the CPU PC board to the PCB

frame.

3) Remove the two SMW-3x6 screws to detach the PCB attachment plates A and B.

4) Disconnect the all harnesses from the CPU PC board. (CN4, 10, 12, 13, 15, 16, 501, 601 to 603)

NOTE:The printer with the serial number of 3Txxxxxx or later is provided with the battery for the real

time clock. Disconnect the battery harness from CN8 on the CPU PC board, also.

5) Remove the two SMW-3x6 screws to detach the CPU PC board from the printer.

6) After replacing the CPU PC board with a new one, reassemble the printer in the reverse order of

removal.

Fig. 2-10

CPU PC Board

SMW-3x6 Screw

CPU PC Board

Harnesses

PCB Attachment Plate

Harnesses PCB Attachment Plate

B-3x6 Screw

SMW-3x6 Screw

Hex. Bolt

PCB Frame

Fig. 2-11

2. MAJOR UNIT REPLACEMENT EO18-33011

2.6 REPLACING THE I/O PC BOARD

2- 8

Fig. 2-12

2.6 REPLACING THE I/O PC BOARD

1) Remove the side cover from the printer. (Refer to Section 2.2.)

2) Disconnect the all harnesses from the I/O PC board. (CN1, 3, 5, 7 to 9, 11, 13 to 16, 200)

3) Remove the four SMW-3x6 screws to detach the I/O PC board from the printer.

4) After replacing the I/O PC board with a new one, reassemble the printer in the reverse order of

removal.

NOTES: 1. Make sure the DIP switch provided on the I/O PC board is set properly. If not, refer to the

following table and change the settings.

No. Status Function Remarks

OFF B-492L type

1 ON B-492R type Selection between L type and R type. See CAUTION

below.

OFF Standard specifications

2 ON In-line specifications Specification of the Expansion I/O PC Board

(Timing of the input/output signals)

OFF

3 ON Not used.

2. Changed settings of the DIP switch are stored into the memory when the power is turned

on or the printer is reset.

5) Refer to the following page and perform a ribbon sensor adjustment.

SMW-3x6 Screw

I/O PC Board

CAUTION!

If Switch No. 1 is set to the wrong status, the ribbon motors and the stepping motors will

rotate in the reverse direction.

GND (Frame Plate)

2. MAJOR UNIT REPLACEMENT EO18-33011

2.6 REPLACING THE I/O PC BOARD

2- 9

•Ribbon Sensor Adjustment Procedure

Use a TOSHIBA TEC-approved ribbon for sensor adjustment.

(1) Set the ribbon so that the ribbon sensor can detect the ribbon. Then, turn the power on.

(2) Turn the VR1 on the I/O PC board so that the voltage between the GND(Frame Plate: Refer to the

figure on the previous page.) and TP1 is 3.0 ±0.2V when measured with an oscilloscope.

(3) Turn the power off and attach the side cover and close the top cover.

VR1

TP1

Fig. 2-13

Voltage

3.0±0.2V

GND

Range: 1V/0.2 m sec.

VR1

Fig 2-14

2. MAJOR UNIT REPLACEMENT EO18-33011

2.7 REPLACING THE EXPANSION I/O PC BOARD

2-10

Fig. 2-15

2.7 REPLACING THE EXPANSION I/O PC BOARD

1) Remove the side cover. (Refer to Section 2.2.)

2) Remove the CPU PC board from the printer. (Refer to Section 2.5.)

3) Disconnect the harness from the Expansion I/O PC board.

4) To detach the Expansion I/O PC board remove the two B-3x6 screws which secure the Expansion

I/O PC board to the PCB frame.

5) After replacing the EXPIO PC board with a new one, reassemble the printer in the reverse order of

removal.

B-3x6 Screw

Expansion I/O PC Board

Harness

PCB Frame

2. MAJOR UNIT REPLACEMENT EO18-33011

2.8 REPLACING THE RIBBON MOTORS

2-11

2.8 REPLACING THE RIBBON MOTORS

1) Remove the side cover from the printer. (Refer to Section 2.2.)

2) Remove the four SM-4x10 screws which secure the ribbon motor unit to the printer.

3) Disconnect the ribbon motor harnesses and slit sensor harnesses from the ribbon motor unit, and

remove the ribbon motor unit from the printer.

Ribbon Motor Unit

SM-4x10 Screw

Slit Sensor Harness

(White, 3 pins)

Slit Sensor Harness

(Black, 3 pins) Ribbon Motor Harness

(Red, 2 pins)

Ribbon Motor Harness

(Black, 2 pins)

Fig. 2-16

Ribbon Motor (Feed)

Ribbon Motor (Rewind)

2. MAJOR UNIT REPLACEMENT EO18-33011

2.8 REPLACING THE RIBBON MOTORS

2-12

4) Remove the four SMW-3x8 screws (small washer type) to detach both ribbon motors (feed and

rewind) from the ribbon motor unit.

5) After replacing the ribbon motors with new ones, reassemble in the following procedure. Attach

the ribbon motor (Feed) aligning the dowels on the ribbon motor mounting plate with the holes in

the ribbon motor unit.

When attaching the ribbon motor (Rewind), secure it with the SMW-3x8 screws (small washer

type) temporarily, insert a 0.06-mm thick backing paper between the motor pinion gear and the slit

gear (Rewind) for adjusting the back lash, and then tighten the screws pushing the motor pinion

gear against the slit gear (Rewind). Lastly remove the backing paper.

NOTES:

1. After installing the ribbon motors, check that there is proper back lash between the motor pinion

gear and the slit gear by rotating the ribbon holder.

2. Apply FLOIL to the pinion gears of the ribbon motors (feed and rewind) during reassembly. At this

time, be careful not to stain the slit sensor with FLOIL.

Ribbon Motor (Feed)

SMW-3x8 Screw

(Small washer type)

Ribbon Motor (Rewind)

Dowels

Apply FLOIL

G-488.

SMW-3x8 Screw

(Small washer type)

Ribbon Motor Unit

Fig. 2-17

Ribbon Motor (Rewind)

Ribbon Motor

Mounting Plate

CAUTION!

Never separate the ribbon motor mounting plate from the ribbon motor (Feed), as doing so

would require a special jig to reassemble it correctly.

Slit Gear (Rewind)

0.06-mm Thick Backing Paper

Motor Pinion

Gear

Slit Sensor

(Rewind)

Ribbon Holder

Table of contents

TEC B-490 SERIES User manual

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