Tally Dascom DL-210 User manual

Maintenance Manual
DL-210 Label & Barcode Printer
Maintenance Manual
DL-210 Label & Barcode Printer

Preface
About This Manual
This technical manual acts as a guide for the troubleshooting, servicing, and repair of
the printer equipment.
All rights are reserved. Any translations, re-printing or copying by any means of this
manual complete or in part or in any different form requires our explicit approval. We
reserve the right to make changes to this manual without notice. All care has been
taken to ensure accuracy of information contained in this manual. However, we cannot
accept responsibility for any errors or damages resulting from errors or inaccuracies
of information herein.
We welcome any suggestion which may help us to improve this manual further.

Important Instructions
Read the following instructions thoroughly before servicing or maintainingyour printer.
•Place the printer on a solid and even base so that it cannot fall.
•Always power off the printer and disconnect the power cord from the mains before
doing any servicing or maintenance work.
•Be careful when handling parts with sharp metal edges.
•Be careful of possible hot print head, if printing had just been performed.
•Avoid touching the electronic components unless you have taken anti-electrostatic
discharge measures.
•During servicing, pay special attention to how the printer parts were originally mounted.
•Unless stated otherwise, the re-assembly process is the reverse of the disassembly
process.
•After servicing any printer parts or assemblies, which are supplied with critical voltage
and therefore connected to frame ground, a test/examination of the grounding wire has
to be accomplished in accordance with the national safety regulations.

Table of Contents
SECTION 1 CONTROL PANEL FUNCTION ...................................................................1
Part One Control Panel Function.................................................................................................1
1.1 Panel functions and button ....................................................................................................1
1.2 Feed Key & Power Switch Function....................................................................................2
Hexadecimal Dumping Mode........................................................................................................2
1.3 Parameter Setup......................................................................................................................... 4
1.4 Error Table....................................................................................................................................5
Part Two Firmware Update...........................................................................................................5
2.1 Update firmware via USB........................................................................................................5
SECTION 2 ADJUSTING SENSORS AND PRINTOUT..................................................8
Part One Sensors Functions...........................................................................................................8
1.1 Cover open detection sensor.................................................................................................9
1.2 Gap sensor...................................................................................................................................10
1.3 Ribbon sensor............................................................................................................................11
1.4 Cutter installation ....................................................................................................................12
1.5 Peeler Installation....................................................................................................................13
Part Two Calibrate Printout.......................................................................................................14
2.1 Evaluate Calibration Result..................................................................................................15
SECTION 3 DIASSEMBLY AND ASSEMBLY ..............................................................17
Part One Disassembly...................................................................................................................17
1.1 Disassembly Notice..................................................................................................................17
1.2 Disassembly Procedure .........................................................................................................19
1.3 Interface Board(s) Removal.................................................................................................20
1.4 Thermal Print Head Removal..............................................................................................20
1.5 Locking Button Shaft Removal............................................................................................22
1.6 Upper Housing & Media Holder Removal ......................................................................23
1.7 Printer Mechanism Removal...............................................................................................25
1.8 Platen Assembly Removal.....................................................................................................26
1.9 Spring 2 Module Removal.....................................................................................................27

1.10 Printer Mechanism Removal.............................................................................................29
1.12 Media Sensor Removal........................................................................................................30
1.13 dust-free sponge installation............................................................................................31
1.14 cutter disassembly ................................................................................................................32
1.15 peeler assembly......................................................................................................................32
SECTION 4 EXPLODED DRAWING & PARTS LIST ................................................. 33
Part One Complete Assembly Exploded Diagram and Part List..................................33
1.1 Complete Assembly Exploded Diagram..........................................................................33
1.2 Complete Assembly Part List..............................................................................................35
Part Two Recommended Spare Parts List............................................................................39
2.1 Options..........................................................................................................................................39
Part 3 RSPL Illustrations..............................................................................................................41
3.1 RSPL...….........................................................................................................................................41
SECTION 5 TROUBLESHOOTING...............................................................................45
Part One Troubleshooting...........................................................................................................45
1.1 Troubleshooting........................................................................................................................45
1.2 Printer state description .......................................................................................................52
Part Two Electronics.....................................................................................................................54
2.1 Block Diagram............................................................................................................................54
2.2 Socket Position on the Main Board...................................................................................55
DASCOM REPRESENTATIVES.....................................................................................................56
* Please pay attention to the contents starting with following markings.
info mark
stop mark

1
SECTION 1 CONTROL PANEL FUNCTION
In this section, we will talk about the control panel and power switch functions and their
combinations’ functions.
Part One Control Panel Function
1.1 Panel functions and button
The printer has three LEDs and one button on the control panel.

2
Feed Key Operation
Under ZPL/EPL mode, press Feed Key once, feed one piece of label;
Under ZPL/EPL mode, hold down Feed Key without release, feed labels continuously.
1.2 Feed Key & Power Switch Function
Purpose
Operation
Print self-test
Hold down Feed Key and switch on printer till Power
LED blinks once, buzzer beeps once.
Auto calibrate label
Hold down Feed Key and switch on printer till Power
LED blinks twice, buzzer beeps twice.
Hexadecimal dump
Hold down Feed Key and switch on printer till Power
LED blinks three times, buzzer beeps three times.
Restore factory setting
Hold down Feed Key and switch on printer till Power
LED blinks four times, buzzer beeps four times.
Feed paper one line (30 steps)
Press Feed Key once
Feed one piece of label.
Press Feed Key once
Feed paper continuously.
Hold down Feed Key without release
Feed labels continuously.
Hold down Feed Key without release
Hexadecimal Dumping Mode
Hold down Feed Key and switch on printer till Power LED blinks three times, buzzer beeps
three times.
When self-test is OK but on-line printing error occurs, you can check the communication
between PC and program via Hexadecimal Dump mode. In Hexadecimal Dump mode, the
printer will print out hexadecimal data once it receives the signal from host. You can ask
technical service for analysis.
The printer starts printing “HEX DUMP PRINT MODE” followed by the received data printed
in hexadecimal numbers and some characters.
CAUTION!
The printer prints “.” if there is no characters corresponding to data.
During hexadecimal dump, functions except some command will be disabled.
If print data does not cover a line, press the FEED switch to print the line.

3
Printing example:
0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
Press the FEED button one time to feed the last line after the printer stops printing so as
to return to the normal mode.

4
1.3 Parameter Setup
Settings
A CD comes along with printer. The CD contains POS & label printer setup tool for
configuring printer. Or, please find the latest setup tool on Dascom website:
www.dascom.com
Read the help file carefully before using the setup tool. Please click “Help” button below
for more information.

5
1.4 Error Table
LEDs
LEDs’ behavior
Status
Power
On ○
Power on.
Off ●
Error or power off.
Status
On ○
Paper end.
Off ●
Normal.
Fast blink ○●○●○●○
Label remains in peeler.
Slow blink ○●●○●●○
Ribbon end.
Error
On ○
Print head mechanism is
opened.
Off ●
Normal.
Fast blink ○●○●○●○
Print head is over-heated.
Part Two Firmware Update
2.1 Update firmware via USB
Dascom is not liable if customers are doing a firmware update by
themselves. If power is switched off during the process, the printer may be
damaged afterwards.
(1) Preparation
USB cable, 24V power adapter, DL-210 setup tool, firmware file.
(2) Connection
Connect printer and host with USB cable firmly. Check the Device Manager, if connection
is successful, “USB printing support” will display under “universal serial Bus Controllers”
directory. Otherwise, please check the connection between printer and USB interface,
please check whether the Driver installation is successful or not.

6
(3) Enter Update Mode
① Lift up top cover and turn up print head mechanism
② Hold down Feed Key and switch on printer simultaneously. Release Feed Key once
powering on, the printer will beep once.
③ Status LED on, printer enter upgrade mode.
(4) Upgrade Firmware
① Run Dascom setup tool, select model Label Printer and USB interface.
② Select “Update Firmware” tab, then click “Browse” to locate the firmware/CG file, and
then click “Update”.
Print head
mechanism

7
③ After loading the firmware, the Power LED, Error LED and Status LED blink.
④ When the printer beeps twice, and the three LEDs are on, turn the printer off.
⑤ Mission complete.

8
SECTION 2 ADJUSTING SENSORS AND PRINTOUT
In this section we will cover sensors locations and their function, including cover open
sensor, black mark sensor, gap receive sensor and ribbon sensor.
When the printer is not working properly, you need to adjust the gap detection during
maintenance.
Part One Sensors Functions
Locations of the sensors
Ribbon
sensor
Cover open
sensor
Gap
sensor
Reflective
sensor

9
1.1 Cover open detection sensor
Remark:
The cover open detection sensor is a switch-mode sensor assembly, in order to detect
whether the print head is open or closed. When the print head is open and the printer is
on, the printer will give an error LED alarm, which indicates the print head is open.
Please note that this sensor will not detect whether the top cover is open or not.
During firmware update the print head along with the top cover should be open,
otherwise users cannot proceed with firmware updating.

10
1.2 Gap sensor
Remark:
The gap sensor works together with the reflective sensor. They have two functions:
1. Media sensor = “gap” and “reflective” detection methods.
2. Black mark position detection (media sensor = reflective detection method)
As for function 1, users have to align the reflective sensor with the reflective sensor
receiver component with the black mark sensor component. As picture A shows, move
around the sensor support so as to align its triangle with another triangle on the center
housing.
As for function 2, move the black mark sensor component support to correct position
based on your needs.

11
1.3 Ribbon sensor
Remark:
When the ribbon is used up, the sensor will detect it and raises alarm via the LEDs.
When installing the ribbon, be aware of the in/out face.

12
1.4 Cutter installation
Remark:
Remove the ratable plate and install the cutter connector to the J2 connector, and then
install the cutter.
You could change the cutting mode via the tool: full cut or partial cut.
cutter
Rotatable
Plate
J2
connector

13
1.5 Peeler Installation
Remark:
Remove the ratable plate and install the peeler connector to the SJ6 connector, and then
install the peeler.
You could enable or disable the peeler function via the tool.
peeler
SJ6
connector

14
Part Two Calibrate Printout
The printer needs to be calibrated to reassure its precision. In this part, calibration method
will be explained. You may refer to it when you come to maintenance, repair or changing
parts,
Note：In this part we mean to calibrate theprint head spring, so that we could obtain ideal
printout. By calibrating the print head spring, we could adjust the mechanical gap of this
printer. It has been adjusted to suitable value at factory. But when such value is too big or
too small, the printout will be unsatisfactory, causing problems such as unstable printing,
ribbon jam or media jam.
Print head spring-Left
Print head spring-Right
Print head