Star Micronics TUP900 Series User manual

THERMAL PRINTER
TUP900 SERIES
TECHNICAL MANUAL
[SECONDEDITION]

INTRODUCTION
This manual describes the thermal printer TUP900 series.
Itisdesignedforuseasareferenceforperiodicinspectionsandmaintenanceprocedurestobeexecuted
by service personnel. It is not intended for the general user. Users of this manual should have a basic
knowledge and understanding of the English language.
•This manual is divided into the following sections:
Chapter 1 Adjustments
Chapter 2 Maintenance and Lubrication
Chapter 3 Parts List
•First edition : Apr. 2003 TUP992 only
Second edition : Sep. 2003 Add TUP942
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2
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NOTICE
•Allrightsreserved.Reproductionofanypartofthismanualinanyformwhatsoever,
without STAR’s express permission is forbidden.
•The contents of this manual are subject to change without notice.
•All efforts have been made to ensure the accuracy of the contents of this manual at
the time of going to press. However, should any errors be detected, STAR would
greatly appreciate being informed of them.
•The above notwithstanding, STAR can assume no responsibility for any errors in
this manual.
© Copyright 2003 Star Micronics Co.,Ltd.

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CHAPTER 1
ADJUSTMENTS
This printer has undergone various adjustments so that it will attain a given standard of performance.
In this chapter, a brief explanation is given of the methods for making adjustments.
Follow the instructions when performing maintenance inspections or when replacing parts to correct
malfunctions.
1. Adjustment of the Paper End & Black Mark Sensor............................. 2
2. Adjustment of the Paper Near End Sensor ........................................... 3

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LED1 LED2
Screw
Board chassis
VR1
DIP Switch DSW1
1. Adjustment of the Paper End & Black Mark Sensor
1. Turn the printer off and unplug the power cord.
2. Remove the screws. Then, remove the board chassis.
Fig. 1-1 Adjustment Volume
Fig. 1-2 Control Panel

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Screw
Board chassis
VR6
DIP Switch DSW1
3. Since it is adjusted by rotating the volume VR1, check the position of the volume. Prepare a small slotted
screwdriver.
4. Set the paper not for black mark.
5. Use the tip of a thin object to turn off the DIP switch DSW 1-4.
6. Turn the power on.
7. Rotatethe volume VR1 using microscrewdriver, to adjust it toa position whereat both theLED1 (green LED) and
the LED2 (red LED) lamps light.
8. Turn the power OFF.
9. Turn the DIP switch DSW 1-4 to its original setting of ON.
This completes the paper end & black mark sensor adjustment.
2. Adjustment of the Paper Near End Sensor
1. Turn the printer off and unplug the power cord.
2. Remove the screws. Then, remove the board chassis.
Fig. 1-3 Adjustment Volume

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LED1 LED2
SW2
3. Since it is adjusted by rotating the volume VR6, check the position of the volume. Prepare a small slotted
screwdriver.
4. Set the roll paper.
5. Use the tip of a thin object to turn off the DIP switch DSW 1-4.
6. Press the SW2 switch on the control panel while turning the power switch ON.
7. Rotate the volume VR6 using micro screwdriver, to adjust it to a position whereat both the LED1(green LED) and
the LED2 (red LED) lamps light.
8. When the position where both LEDs for LED1/LED2 light cannnot be found by adjusting VR6, Adjust VR6 to the
position where the LED2 lights and LED1 extinguishes.
9. Turn the power OFF.
10 .Turn the DIP switch DSW1-4 to its original setting of ON.
This completes the paper near end sensor adjustment.
Fig. 1-4 Control Panel

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CHAPTER 2
MAINTENANCE AND LUBRICATION
1. Maintenance ............................................................................................. 6
1-1. Cleaning the Thermal Head and Platen............................................................... 6
1-2. Handling Paper Jams............................................................................................ 6
1-3. How to Release the Cutter Lock .......................................................................... 7
2. Lubrication ............................................................................................... 8
2-1. Lubricant ................................................................................................................ 8
2-2. Lubricating Method ............................................................................................... 8
2-3. Lubricated Areas ................................................................................................... 8
2

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1. Maintenance
In order to maintain the optimum performance of this printer and to prevent trouble, maintenance must be carried out
according to the following items.
1-1. Cleaning the Thermal Head and Platen
To ensure long-term and stable printing, periodically clean the thermal head and the platen. It is recommended
that you clean every 500,000 lines.
The thermal head and platen can be cleaned by opening the platen unit with the release lever.
•To clean the thermal head heating elements, wipe with a cotton swab dampened with an alcohol based cleaner
(such as ethanol or methanol). Also, do not apply excessive force when doing so. Wipe the heating elements
gently. After cleaning, check that the alcohol has completely evaporated before closing the platen unit.
•Use a soft, dry cotton swab to clean the platen. Wipe away the dirt while rotating the platen.
Also, complete wipe away all of the paper dust on the rubber platen. If the cleaning is incomplete, there may
be problems in paper feeds.
1-2. Handling Paper Jams
If recording paper should become jammed, open the platen unit and remove the jammed paper.
Never pull on the jammed paper unnecessary while the printer unit is closed because this can damage the drive
system parts.
Fig. 2-1 shows the locations to operate (levers/knob) when paper becomes jammed. Remove jammed paper
according to the following procedures.
<TUP992 >
Procedure 1. Remove the right and left lock levers.
2. Open the platen unit (including the presenter unit) using the release lever.
3. Rotate the knob to remove the jammed paper.
4. Close the platen unit (including the presenter unit) and lock the left and right lock levers.
<TUP942 >
Procedure 1. Open the platen unit using the release lever.
2. Rotate the knob to remove the jammed paper.
3. Close the platen unit. Check that it has been completely closed at this time.
Notes 1) Whenremovingthejammedpaper,nevermoveyouhandsnearthetearbarortheauto-cutterbecauseitisvery
dangerous. Also, when opening or closing the rotating portions, be careful not to get your hands or fingers
caught.
2) Whenlocking the cutter blades, do not forcefullyrotate the platen unit (or the presenterunit) because this can
be the cause of machine failure.
See the following pages for releasing the cutter lock and opening the platen unit.
3) Fig.2-1 is aconceptual view of amodel equipped witha presenter. On modelsnot equipped with apresenter,
operate only the release lever to open the platen unit.

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1-3. How to Release the Cutter Lock
Use the following procedures to release the auto-cutter lock if trouble occurs, such as when paper becomes chewed.
Procedure 1. Turn the apparatus power off.
2. Rotatetheemergencyknobsinthedirectionofthearrowsonthetopoftheauto-cutterunitcasetoreturn
the cutter blades to their home position.
The emergency knob should be rotated using a tweezers, screwdriver or ball-point pen to prevent
accidents.
Lock lever
Knob Release lever
Fig. 2-1 Handling Paper Jams

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2. Lubrication
Lubrication is very important to maintain optimum performance and to prevent trouble.
2-1. Lubricant
The type of lubricant greatly affects the performance and durability of the printer, especially in a low temperature
environment. We recommend use of the grease listed below for this printer.
Type of oil Product name Maker
Grease Molykote EM-30L Dow Corning Corporation
2-2. Lubricating Method
When lubrication is carried out in assembly and disassembly, wash parts well to remove dust and dirt before lubrication.
Lubrication must be carried out regularly once every 6 months or after 1 million lines have been printed. Lubrication is
necessary irrespective of the regular lubrication whenever lubricant becomes deficient after cleaning or whenever parts
have been disassembled or replaced.
2-3. Lubricated Areas
NO. Lubricating Point Grease/Oil
1Rubbing surfaces of Lock shaft and Platen holder EM-30L
2Rubbing surfaces of Lock shaft and Base Frame Unit EM-30L
3Rubbing surfaces of Platen Pivot and Base Frame Unit EM-30L
4Rubbing surfaces of Gear and Gear EM-30L
5Rubbing surfaces of Gear and Shaft EM-30L
6Rubbing surfaces of Shaft and Holder roller EM-30L
7Rubbing surfaces of PF roller bearing and Shaft EM-30L
8Rubbing surfaces of Rear guide and Paper holder EM-30L