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me240 manual ME240/ ME340
Models:
me240
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Troubleshooting
Specs
Install
Maintenance
Pin Configuration
Symptom
Replacing the Platen Roller Assembly
Reassemble the parts in the reverse procedures
Indicator The default position is set
Print head pressure adjustment knob 4. Ribbon end sensor
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ME240/ ME340
THERMAL TRANSFER / DIRECT THERMAL BAR CODE PRINTER
SERVICE
MANUAL
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Contents
ME240/ ME340
THERMAL TRANSFER / DIRECT THERMAL BAR CODE PRINTER SERVICE MANUAL
TABLE OF CONTENT
1.1. Overview
1. FUNDAMENTAL OF THE SYSTEM
Front View
3. Print head pressure adjustment knob 4. Ribbon end sensor
Interior View
1. Ribbon rewind spindle 2. Ribbon supply spindle
5. Print head release lever 6. Label roll guard 7. 3” core adapter
Recommended SD card specification
Rear View
SD card spec
SD card capacity
microSD 1 GB
V1.0
Transcend, Panasonic
V2.0 SDHC CLASS
2. ELECTRONICS
2.1 Summary of Board Connectors
Description
Connector
Description
Voltage
Voltage
Description
Description
Voltage
Centronics soft cable connector
Connector
Centronics power connector
Description
Strobe
2.2 Pin Configuration
Ethernet
CONFIGURATION
3. MECHANISM
4. Reassemble the parts in the reverse procedures
3.1Remove the Electronics Cover
1. Remove three screws on back of the printer Screws
3.2 Remove the Right Side Cover
2. Reassemble the parts in the reverse procedures Screws Screws
1. Refer to section 3.1 to remove the electronics cover
3.3 Replacing the Key/LCD Panel Module
2. Disconnect harness from the Key/LCD panel module
3. Push two tabs to remove/replace the Key/LCD panel module
The connector to power supply The tab of harness
3. Disconnect all connectors from the main board
3.4 Replacing the Main Board
1. Refer to section 3.1 to remove electronics cover
4. Remove four screws on the main board Screws Screws
5. Reassemble the parts in the reverse procedures
4. Replace the main board
2. Disconnect two connectors from the power switch
3.5 Replacing the Power Supply Unit
3. Replace the power supply unit
1. Refer to section 3.4 to remove the main board
3.6 Replacing the Stepping Motor
2. Disconnect the stepping motor connector Stepping motor connector
3. Remove three screws on the stepping motor Screws
4. Replace the stepping motor
1. Open printer right side cover
3.7 Replacing the Platen Roller Assembly
2. Disengage the print head lift lever
3. Remove one screw to remove the lower front cover
7. Reassemble the parts in the reverse procedures
Right side bushing Platen roller assembly
For regular labelFor thick label Thickness is 0.19 mm
Indicator The default position is set
1. Open the printer right side cover
3.8 Replacing the Print head ASSY
2. Remove one screw from the mechanism Screws
3. Disengage the print head release lever
New screw
Tenons Print head module
3.9 Replacing the Media Sensor Module
3.10 Replacing the Ribbon End Sensor Module
Ribbon end sensor module connector
3. Remove two screws to remove the ribbon end sensor module Screws
7. Reassemble the parts in the reverse procedures
3.11 Replacing the Ribbon Encoder Sensor Module
Ribbon encoder sensor module connector
3. Remove one screw that fixing the ribbon supply spindle Screw
1. Refer to section 3.1 to remove the electronics cover
7. Remove one screw to replace the ribbon encoder sensor module Screw
8. Reassemble the parts in the reverse procedures
2. Remove two screws to remove the interface cover Screws
3.12 Centronics Parallel Interface Board Installation Option
1. Refer to section 3.1 to remove the electronics cover
Screws
8. Reassemble the parts in the reverse procedures
5. Loosen the connector before install the flat cable
3.13 Cutter Module Installation Option
6. Close the cutter cover
3.14 Peel-off Module Installation Option
6. Close the peel-off cover
Print engine module measurements
3.15 Print Engine Module Specification Option
Print engine module Print engine module with peel-off
Print engine module with cutter
Bottom view
1. All measurements are in mm
4.1 Common Problems
4. TROUBLESHOOTING
Problem
Recovery Procedure
Memory full
Not Printing
FLASH / DRAM
SD card is unable to use
Poor Print Quality
skew when printing
LCD panel is dark and keys are
not working
Power and Error LEDs are
reboot the printer
The printing position of small
label is incorrect
4.2 Print Head Pressure Adjustment Knob
Adjustable Printer Parts
4.3 Mechanism Fine Adjustment to Avoid Ribbon Wrinkles
Symptom
upper right direction “ˊ”
Right knob
Left knob
Z-axis mechanism adjustment knob Marker position
4.4 Z-axis Mechanism Adjustment Knob
Page
2. The cleaning process is described as following
5. MAINTENANCE
Lint-free cloth Vacuum / Blower brush 100% ethanol
Printer Part
Do not touch printer head by hand. If you touch it careless, please use ethanol to clean it
Content
UPDATE HISTORY
Date
Editor
Page
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