Alpha-3R
Direct Thermal Portable Printer
SERVICE
MANUAL
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Interior View
2
1
3
4
5
1. Tear edge
2. Print head
3. Media holder
4. Platen
5. Black mark sensor
3
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Rear View
1
2
3
5
4
1. Li-ion battery
2. Battery open clasp
3. USB interface
4. Power jack
5. Interface cover
2
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Pin
1
Description
3.3V
2
BT/WiFi Reset
BT RXD
3
4
BT RTS
5
BT TXD
6
BT CTS
7
WiFi wake up
WiFi TCP
BT/WiFi Switch
GND
8
9
10
Stepping motor
Pin
Description
OUT1
1
2
3
4
3
OUT2
OUT1
OUT2
Download F/W connector
Pin
1
Description
3.3V
2
GND
3
RESET
BMS
4
4
5
NPCS0
MOSI
6
7
MISO
8
SPCK
Head open sensor
Pin
1
Description
HEAD
5
2
GND
6
7
8
USB & RS 232 connector
12V DC IN
TPH connector
4
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Paper sensor
Pin
1
Description
3.3V
9
2
BM_E
BM_R
3.3V
3
4
5
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Main board bottom
1
Connector Description
1
Battery connector
6
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3. Use a tool to remove the shaft. Remove/Replace the media cover. (including the
platen roller ass’y)
4. Reassemble the parts in the reverse procedures.
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3.2 Replacing the Keys Control Board
1. Refer to section 3.1 to remove the printer top cover.
2. Remove two screws on the keys control board.
3. Loosen the connector lock then disconnect the flat cable from the keys control board.
Remove/Replace the keys control board.
4. Reassemble the parts in the reverse procedures.
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3.3 Replacing the Bluetooth Module (Option)
1. Refer to section 3.2 to remove the keys control board.
2. Remove two screws on the Bluetooth control board.
3. Disconnect the connector on the board.
4. Reassemble the parts in the reverse procedures.
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3.4 Replacing the Media Holder Assembly
1. Remove two screws and media holder adjustment knob.
2. Take the interior mechanism from the printer bottom cover.
3. Plug the media holder adjustment knob to rotate the media holder to the closest position
and remove a screw on the other side.
.
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4. Take the media holder assembly from the mechanism.
5. Reassemble the parts in the reverse procedures.
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3.5 Replacing the Main Board Assembly
1. Refer to section 3.2 to section 3.4 to remove key control board, Bluetooth control board
(option), and the media holder assembly.
2. Remove two screws from the back of interior mechanism and disconnect all the
connectors on the main board assembly.
3. Reassemble the parts in the reverse procedures.
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3.6 Replacing the Print Head Assembly
1. Refer to section 3.2 to section 3.5 to remove key control board, Bluetooth control board
(option), the media holder assembly, and main board assembly.
2. Use the long-nose pliers to remove two spring torsions on each side.
3. Take the gear holder and the gear, and push the print head holder on the each side to
remove the print head assembly.
Gear holder
Gear
4. Reassemble the parts in the reverse procedures.
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3.7 Replacing the Stepping Motor
1. Refer to section 3.4 and section 3.5 to remove media holder assembly and main board
assembly.
2. Remove the gear holder and two gears.
Gear holder
Gears
3. Remove two screws.
4. Reassemble the parts in the reverse procedures.
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3.8 Replacing the black mark sensor assembly
1. Refer to section 3.2 to section 3.5 to remove key control board, Bluetooth control board
(option), the media holder assembly, and main board assembly.
2. Remove a screw and replace the black mark sensor.
Black mark sensor
assembly
3. Reassemble the parts in the reverse procedures.
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3.9 Replacing the WiFi Module (Option)
1. Refer to section 3.2 to remove the keys control board.
2. Remove two screws on the board.
3. Refer to section 3.5 to remove the main board assembly.
4. Replace the WiFi control board.
5. Reassemble the parts in the reverse procedures.
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4. TROUBLESHOOTING
4.1 Common Problems
The following guide lists the most common problems that may be encountered when
operating this bar code printer. If the printer still does not function after all suggested
solutions have been invoked, please contact the Customer Service Department of your
purchased reseller or distributor for assistance.
Problem
Power indicator does not
illuminate
Possible Cause
Recovery Procedure
* Reinstall the battery.
* Switch the printer on.
* Charge the battery.
* The battery is not properly
installed.
* The battery is dead.
- The printer status from
DiagTool shows “Head
Open”.
* The printer carriage is open. * Please close the print carriage.
* Running out of media roll.
* Supply a new media roll.
* The media is installed
* Please refer to the steps on section 3.4 to
incorrectly.
* Black mark sensor is not
* Calibrate the black mark sensor.
calibrated.
- The printer status from
DiagTool shows “Out of
Paper”..
reinstall the media roll.
* Black mark sensor is not set
properly.
* Calibrate the black mark sensor.
* Make sure media size is set
* Set media size correctly.
properly.
- The printer status from
DiagTool shows “Paper Jam”.
* Media may be stuck inside
the printer mechanism.
* Delete unused files in the FLASH/DRAM.
* The max. numbers of DRAM is 256 files.
* The max. user addressable memory space
of DRAM is 256KB.
* The max. numbers of file of FLASH is 256
files.
Memory full
* The space of FLASH/DRAM
is full.
( FLASH / DRAM )
* The max. user addressable memory space
of FLASH is 2560KB.
* Media is loaded incorrectly
* Dust or adhesive
accumulation on the print
head.
* Print density is not set
properly.
* Reload the supply.
* Clean the print head.
* Clean the platen roller.
* Adjust the print density and print speed.
* Run printer self-test and check the print
head test pattern if there is dot missing in
the pattern.
Poor Print Quality
* Printhead element is
damaged.
* Change proper media roll.
Missing printing on the left or
right side of label
* Wrong label size setup.
* Set the correct label size.
* The print head is dirty.
* The platen roller is dirty.
* Clean the print head.
* Clean the platen roller.
Gray line on the blank label
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* The printer is in Hex Dump
mode.
* The RS-232 setting is
incorrect.
* Turn off and on the printer to skip the
dump mode.
* Re-set the Rs-232 setting.
Irregular printing
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5. Maintenance
This session presents the clean tools and methods to maintain your printer.
1. Please use one of following material to clean the printer.
Cotton swab
Lint-free cloth
Vacuum / Blower brush
100% ethanol
2. The cleaning process is described as following,
Printer Part Method
1. Always turn off the printer before Clean the print head when changing a new
Interval
cleaning the print head.
2. Allow the print head to cool for a
minimum of one minute.
3. Use a cotton swab and 100%
ethanol to clean the print head
surface.
label roll
Print Head
1. Turn the power off.
Clean the platen roller when changing a
2. Rotate the platen roller and wipe it new label roll
thoroughly with 100% ethanol and
Platen Roller
a cotton swab, or lint-free cloth.
Use the lint-free cloth with 100%
ethanol to wipe it.
As needed
Tear Bar/Peel Bar
Sensor
Exterior
Interior
Compressed air or vacuum
Monthly
Wipe it with water-dampened cloth
As needed
As needed
Brush or vacuum
Note:
Do not touch printer head by hand. If you touch it careless, please use ethanol to clean it.
Please use 100% Ethenol. DO NOT use medical alcohol, which may damage the printer head.
Regularly clean the print head and supply sensors once change a new ribbon to keep printer
performance and extend printer life.
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Corporate Headquarters
Li Ze Plant
9F., No.95, Minquan Rd., Xindian Dist.,
New Taipei City 23141, Taiwan (R.O.C.)
TEL: +886-2-2218-6789
No.35, Sec. 2, Ligong 1st Rd., Wujie Township,
Yilan County 26841, Taiwan (R.O.C.)
TEL: +886-3-990-6677
FAX: +886-2-2218-5678
FAX: +886-3-990-5577
E-mail: [email protected]
TSC Auto ID Technology Co., Ltd.
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