Instruction/ maintenance manual of the product me240 The Speaker Company
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ME240/ ME340 SER VICE MANUAL THERMAL TRANSFER / DIRECT THERMAL BAR CODE PRINTER.
i T A BLE O F CONTENT 1. FUNDAMENT AL OF TH E SYSTEM .......................................................................... 1 1.1. Overview ...........................................................................................................
1 1. FUNDAMENTAL OF THE SYSTEM 1.1. Overview Front V iew 1. LED indicators 2. Pause ke y 3. F eed k ey 4. Paper exit chute 5. Lower fr ont cover 6. Media viewer 7.
2 Interior V iew 1. Ribbon re wind spindle 2. Ribbon suppl y spindle 3. Print head press ure adjus tment k nob 4. Ribbon end sens or 5. Pr int head release lever 6. Label roll guard 7. 3 ” core adapter 8. Label suppl y spindle 9. Ribbon guide bar 10 .
3 Rear View 1. Internal Ethern et interface (Option) 2. Fan-fold paper entrance c hute 3. RS -232C interf ace (Max. 1 15,200 bps) 4. USB interf ace (USB 2.0/ Full speed m ode) *5. SD card slot 6. Centronics interface (Option) 7. USB host (Option) 8. Power switch 9.
4 V1.0, V1.1 microSD 1 GB Transcend, Pan asonic V2.0 SDHC CLA SS 4 microSD 4 GB Panasonic V2.0 SDHC CLA SS 6 microSD 4 GB Transcend V1.0, V1.1 miniSD 128 MB Transcend, Pan asonic V1.0, V1.1 miniSD 256 MB Transcend, Pan asonic V1 .0, V1.1 miniSD 512 MB Transcend, Pan asonic V1.
5 5 2. ELECTRONICS 2.1 Summar y of Board Connectors Main board 4 7 3 6 17 12 18 1 2 5 13 14 15 10 9 8 19 11 16.
6 6 Connector Description 1 USB connector 2 RS -232C connector 3 SD card slot 4 Ethernet RJ-45 conn ector (Option) 5 USB host connector (Option) 6 Micro processor 7 Head open sensor co nnector Pin Description V oltage 1 Head open sensor emitter power pin 1.
7 7 Pin Description V oltage 1 Ribbon sensor recei ver A/D: 0~3.3V 2 Ribbon sensor em itter power pin 5V 3 GND 0V 4 Ribbon sensor em itt er 4.0~4.1V : Em itter on 4.3~4.4V : Em itter off 16 Cutter/peel-off sensor conn ector Pin Description V olt age 1 GND 0V 2 Cutter power 24V 3 Peel sensor em itter 4.
8 8 Centronics-interface board Connector Description Remark 1 Centronics soft cable connec tor 2 Centronics power conn ector 3 Centronics port connect or 1 3 2.
9 9 2.2 Pin Configuratio n RS - 232C PIN CONFIGURA TION 1 +5 V 2 TXD 3 RXD 4 CTS 5 GND 6 R TS 7 N/C 8 R TS 9 N/C USB PIN CONFIGURA TION 1 N/C 2 D- 3 D+ 4 GND Centronics Pin SPP Mode Nibble In/Out 1 S .
10 10 Ethernet PIN CONFIGURA TION 1 Tx+ 2 Tx - 3 Rx+ 4 N/C 5 N/C 6 Rx - 7 N/C 8 N/C.
11 11 3. MECHANISM 3.1 Remove the Ele ctronics Co v er 1. Remove three screws on back of the printer . 2 . Open printer right side cover and remove one screw then close the cover . 3. Remove the electronics cover . 4. Reassemble the part s in the reverse proce dures.
12 12 3.2 Remo v e the Right Si de Cover 1. Open p rinter right side cover and remov e four screws to remove the pri nter right side cover . 2. Reassemble the part s in the reverse proce dures.
13 13 3.3 Replacing the Ke y/LCD Panel Module 1. Refer to section 3.1 to remove the electronics cover . 2. Disconnect harness from the Key/LCD panel module. 3. Push two tabs to re move/replace the Key/LCD panel module. Key Panel Module LCD Panel Module (Option for Basic model) 4.
14 14 3.4 Replacing t he Main Board 1. Refer to section 3.1 to remove electronics cover . 2. Remove two screws on the power jack socket then pull out the socket. 3 . Disconnect all connectors from the main board. N ote : Y ou should press the tab of pow er supply harness w hen disconnect the power supply connector .
15 15 4. Remove four screws on the main board. 4. Replace the main board. 5. Reassemble the p arts in the reverse procedures. Screws Screws.
16 16 3.5 Replacing t he Power S upply Unit 1. Refer to section 3 .4 to remove the main board. 2. Disconnect two connectors from the power switch. 3. T a ke of f the power supply cover (black mylar ). Disconnect two connectors an d remove four screws on the power supply unit.
17 17 3. 6 Replacing the Stepping Motor 1. Refer to section 3.1 to remove the electronics cover . 2. Disconnect the stepping motor connector . 3. Remove three screws on the stepping motor . 4. Replace the stepping motor . 5. Reassemble the p arts in the reverse procedures.
18 18 3.7 Replacing the Platen Roller Assembl y 1. Open printer right side cover . 2. Disengage the print head lift lev er . 3. Remove one screw to remove the lower front co ver . 4. Remove one screw on the platen right side bushing. 5. Disengage the platen left side bushing tab from the printer .
19 19 6. T ake out the platen bushing , platen roller assembly and replace a new platen roller assembly . 7 . Reassemble the p arts in the reverse procedures.
20 20 3.8 Replacing t he Print h ead A S S'Y 1. Open the printer right side cover . 2. Remove one screw from the mechanism. 3 . Disengage the print head release lever . 4. Carefully disconnect the print head connector from the print head module .
21 21 6. Connect the print head cable and carefully slide assembly into the print mechanism. The holes of print head assembly mu st align and then insert the tenons of print mechanism. 7. Close the print head release lever . Use the new screw to install the new print head module.
22 22 3.9 Replacing t he Media Sensor Module 1. Refer to section 3 .1 to remove the electroni cs cover . 2. Disconnect t he media sensor module connector from the main board. 3. At the bottom of the media sensor module, there is a green plastic tab to latch the sensor module to the mechanism.
23 23 3. 10 Replacing t he Ribbon End Sensor Module 1. Refer to section 3 .1 to remove the electroni cs cover . 2. Disconnect the ribbon end sensor module connector f rom the main board. 3. Remove two screws to remove the ribbon end sensor module . 6.
24 24 3. 11 Replac ing the Ribbon Encoder Sensor Mo dule 1. Refer to sectio n 3 .1 to remove the electronics cover . 2. Disconnect the ribbon encoder sensor module connector from the main board. 3. Remove one screw that fixing the ribbon su pply spindle.
25 25 7. Remove one screw to replace the ribbon encoder senso r module. 8 . Reassemble the p arts in the reverse procedures. Screw.
26 26 3. 12 Centronics Parallel Interface B oard Inst allation (Option ) 1. Refer to section 3 .1 to remov e the electronics cover . 2. Remove two screws to remove the interface cover . 3. Use two screws to fix the Centronics parallel interface board on the rear of printer .
27 27 5 . Loosen the connector before inst all the flat cable. 6 . Connect the flat cable between the Centronics parallel interface board and the main board. 7 . Connect the 5-pin cable between the Centronics parallel interface board and main board. 8.
28 28 3. 13 Cutter Mod ule Inst alla tion (Option) 1. Open printer right side cover . 2. Remove one screw to remove the lower front co ver . 3 . Thread the cu tt er cable through the bottom of lower print mechanism. 4. Plug the cutter mini DIN cable connector into the cutter/peel -of f module cable connector .
29 29 5. Use enclosed two screws to fix the cutter fixing plate onto the lower print me chanism. 6. Close the cutter cover ..
30 30 3. 14 Peel-off Mo dule Inst allati on (Option) 1. Open printer right side cover . 2. Remove one screw to remove the lower front co ver . 3. Thread the peel-of f module cable through the bottom of lower print mechanism. 4. Plug the peel-off module mini DIN cable connector into the cutter/peel-of f connect or .
31 31 5. Use enclosed two screws to fix the peel-off fixing plate onto the lower print mechanism. 6. Close the peel-off cov er ..
32 32 3. 15 Print Engin e Module Specification (Optio n) Print engine module measurement s -Print engine module -Print engine module with peel-off.
33 33 -Print engine module with cutter Bottom vie w Note: 1. A ll measurements a re in mm. 2. There are 3 fasten ings in this print engine module, the fastening location be marked in blue on bottom view dra w ing, fit s with scre w M4*10L.
34 34 4 . TROUBLESHOOTING 4.1 Common Proble ms The following guide lists the most common problems that might be encountered when operating this bar code printer.
35 35 No t Printing * Cable is n ot well connected to serial or USB interfac e or parallel port. * The serial port cable pin configuration is not p in to pin connected. * Re -connect cab le to interface. * If using serial cab le, - Please replace the ca ble with pin to pin connected.
36 36 Poor Print Quality * Ribbon and m edia is loaded in correctl y * Dust or adhesive accum ulation on the print head. * Print density is no t set properly . * Print head elem ent is damaged . * Ribbon and m edia are incompatible. * The print head pressure is not set properly .
37 37 Skip labels w hen printing * Label size is not sp ecified properly . * Sensor sensiti vity is not set properly . * The media sensor is cove red with dust. * Check if label size is setup correctly . * Calibrate the se nsor by A uto Gap or Manual Gap options.
38 38 4. 2 Print Head P ressure Adjustment Knob There are two conditions that wil l nee d to adjust the print head pressure. 1. Print with thick media If the media thickness is larger than 0.19 mm, the larg er pressure is required to get good quality printout.
39 39 4.3 Mechanism Fine A djust ment to A void Ribbon Wrinkles This printer has been fully tested before delivery . There should be no ribbon wrinkle presented on the media for general -purpose printing application.
40 40 Adjust the print head pressure adjustment k nob The print head press ure adjustm ent knob has 5 levels of settings. Clock wise direction adjustm ent is to increase the print head pressure. Counter Clockwise adjustm ent can de crease the print head pressure.
41 41 4.4 Z-axis Mech anism A dj ustment Knob For narrow media, If change the print head pressure adjustment knob setting c an’t get the printout without ribbon wrinkle, the Z-axis mechanis m adjustment knob should be adjusted to get the satisfied printout.
42 42 2. Please be noted that print head right pressure find turn should be done by try- and -error . Rotate the Z-axis mechanism adjustment knob for a few circles by wrench and print again to check if the ribbon wrinkle remains.
43 43 5 . MAINTENANCE This session presents t he clean tools and me thods to maintai n your printer . 1. Please use one of following material to clean the printer . Cotton swab ( Head cleaner pen ) Lint-free cloth V acuum / Blower brush 100% ethanol 2.
44 44 Note: Do not touch printer head by hand. If you touch it careless, ple ase use ethanol to clean it. Please use 10 0% Ethenol. DO NOT use m edical alcohol, which may damage the print er he ad. Regularly clean the print head and supply sensors o nce change a new ribbon to keep printer performance and extend printer life.
45 45 UPDATE HISTOR Y Date Content Editor 2012/6/14 Add section 3.15 f or print engine m odule info Camille 2012/9/28 Modify section 3.13 and 3.14 Camille.
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47 47 Corpora te Headquarters Li Ze Plant 9F ., No.95, Minquan Rd., Xindian Dist., No.35, Sec. 2 , Ligong 1st Rd., Wujie T ownship, New T aipei City 231 41 , T aiwan (R .O.C.) Yilan County 268 41 , T aiwan (R.O.C .) TEL: +886-2- 2218 - 6789 TEL: + 886 -3- 990 - 6677 F AX: +886-2- 2218 -5678 F AX: + 886 -3- 990 - 5577 Web site: www .
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