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me240 Remove one screw to replace the ribbon encoder sensor module Screw
Models:
me240
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Troubleshooting
Specification
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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Image 27
7. Remove one screw to replace the ribbon encoder sensor module.
Screw
8. Reassemble the parts in the reverse procedures.
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Contents
ME240/ ME340
THERMAL TRANSFER / DIRECT THERMAL BAR CODE PRINTER SERVICE MANUAL
TABLE OF CONTENT
1. FUNDAMENTAL OF THE SYSTEM
1.1. Overview
Front View
5. Print head release lever 6. Label roll guard 7. 3” core adapter
Interior View
3. Print head pressure adjustment knob 4. Ribbon end sensor
1. Ribbon rewind spindle 2. Ribbon supply spindle
SD card capacity
Rear View
Recommended SD card specification
SD card spec
V2.0 SDHC CLASS
V1.0
microSD 1 GB
Transcend, Panasonic
2. ELECTRONICS
2.1 Summary of Board Connectors
Voltage
Connector
Description
Description
Voltage
Description
Voltage
Description
Description
Connector
Centronics soft cable connector
Centronics power connector
Strobe
2.2 Pin Configuration
Ethernet
CONFIGURATION
1. Remove three screws on back of the printer Screws
4. Reassemble the parts in the reverse procedures
3. MECHANISM
3.1Remove the Electronics Cover
3.2 Remove the Right Side Cover
2. Reassemble the parts in the reverse procedures Screws Screws
3. Push two tabs to remove/replace the Key/LCD panel module
3.3 Replacing the Key/LCD Panel Module
1. Refer to section 3.1 to remove the electronics cover
2. Disconnect harness from the Key/LCD panel module
1. Refer to section 3.1 to remove electronics cover
3. Disconnect all connectors from the main board
The connector to power supply The tab of harness
3.4 Replacing the Main Board
5. Reassemble the parts in the reverse procedures
4. Remove four screws on the main board Screws Screws
4. Replace the main board
1. Refer to section 3.4 to remove the main board
3.5 Replacing the Power Supply Unit
2. Disconnect two connectors from the power switch
3. Replace the power supply unit
4. Replace the stepping motor
2. Disconnect the stepping motor connector Stepping motor connector
3.6 Replacing the Stepping Motor
3. Remove three screws on the stepping motor Screws
3. Remove one screw to remove the lower front cover
3.7 Replacing the Platen Roller Assembly
1. Open printer right side cover
2. Disengage the print head lift lever
Indicator The default position is set
Right side bushing Platen roller assembly
7. Reassemble the parts in the reverse procedures
For regular labelFor thick label Thickness is 0.19 mm
3. Disengage the print head release lever
3.8 Replacing the Print head ASSY
1. Open the printer right side cover
2. Remove one screw from the mechanism Screws
New screw
Tenons Print head module
3.9 Replacing the Media Sensor Module
7. Reassemble the parts in the reverse procedures
Ribbon end sensor module connector
3.10 Replacing the Ribbon End Sensor Module
3. Remove two screws to remove the ribbon end sensor module Screws
1. Refer to section 3.1 to remove the electronics cover
Ribbon encoder sensor module connector
3.11 Replacing the Ribbon Encoder Sensor Module
3. Remove one screw that fixing the ribbon supply spindle Screw
7. Remove one screw to replace the ribbon encoder sensor module Screw
8. Reassemble the parts in the reverse procedures
Screws
3.12 Centronics Parallel Interface Board Installation Option
2. Remove two screws to remove the interface cover Screws
1. Refer to section 3.1 to remove the electronics cover
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
3.15 Print Engine Module Specification Option
Print engine module measurements
Print engine module Print engine module with peel-off
Bottom view
Print engine module with cutter
1. All measurements are in mm
Recovery Procedure
4. TROUBLESHOOTING
4.1 Common Problems
Problem
SD card is unable to use
Not Printing
Memory full
FLASH / DRAM
not working
skew when printing
Poor Print Quality
LCD panel is dark and keys are
label is incorrect
reboot the printer
Power and Error LEDs are
The printing position of small
4.2 Print Head Pressure Adjustment Knob
upper right direction “ˊ”
4.3 Mechanism Fine Adjustment to Avoid Ribbon Wrinkles
Adjustable Printer Parts
Symptom
Right knob
Left knob
Z-axis mechanism adjustment knob Marker position
4.4 Z-axis Mechanism Adjustment Knob
Page
Printer Part
5. MAINTENANCE
2. The cleaning process is described as following
Lint-free cloth Vacuum / Blower brush 100% ethanol
Do not touch printer head by hand. If you touch it careless, please use ethanol to clean it
Editor
UPDATE HISTORY
Content
Date
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