TEC B-443 Service Manual

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TEC Bar Code Printer

B-443

Service Manual

Original

Oct., 1999

(Revision

Document No. EO0-33006

)

PRINTED IN JAPAN

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Page 1 TEC Bar Code Printer B-443 Service Manual Document No. EO0-33006 Original Oct., 1999 (Revision PRINTED IN JAPAN...
Page 2: Table Of Contents
B-443 Bar Code Printer Service Manual Table Of Contents 1. FUNDAMENTALS ABOUT THE SYSTEM ....................1 1.1 F B-443...........................1 EATURES OF THE 1.2 M ..........................1 ODEL AMING YNTAX 1.3 O ...............................2 VERVIEW 1.3.1 Front View..............................2 1.3.2 Rear View ..............................3 1.4 B .............................4...
Page 3 B-443 Bar Code Printer Service Manual 5. TROUBLE SHOOTING ..........................67 5.1 E ............................67 RROR ESSAGES 5.2 T ............................68 ROUBLE HOOTING 5.3 C ........................69 ALIBRATE THE EGISTER 5.4 S ..............................69 TEST 5.5 R ..............................69 LEAR 5.6 D...
Page 4: Fundamentals About The System
1. FUNDAMENTALS ABOUT THE SYSTEM 1.1 Features of the B-443 1. B-443 bar code printer prints bar codes, characters, logos, on various types of labels and tickets by direct thermal or thermal transfer printing. 2 B-443 adopts a “ BASIC-like” high level programming language to help users programme the desired label forms with ease.
Page 5: Overview
B-443 Bar Code Printer Service Manual 1.3 Overview 1.3.1 Front View Operation Panel Top Cover Front Panel Cover Release Button Fig. 1.1 Front View of B-443 November, 99 All Rights Reserved...
Page 6: Rear View
B-443 Bar Code Printer Service Manual 1.3.2 Rear View Label Entrance (External Mount Use) Power Switch DC Power Jack RS-232 Interface Centronics Interface Fig. 1.2 Rear view of B-443 November, 99 All Rights Reserved...
Page 7: Basic Specifications
B-443 Bar Code Printer Service Manual 1.4 Basic Specifications Thermal transfer and direct thermal printing High dot density printing (203 dots/inch) Selectable print speeds at 1.5” , 2.0” or 3.0” per second Supports parallel and serial interface Maximum media width up to 4.4” (114 mm)
Page 9: Effective Print Area
B-443 Bar Code Printer Service Manual 1.5 Effective Print Area Label/Ticket Length 12mm~2286mm Effective Print Length 10mm~2284mm Label/Ticket Width 25mm~103mm Effective Print Width 23mm~101mm No Print Area 1.6 Available Bar Codes Code 39 Code 93 Code 128 UCC Code 128, Subsets A, B, and C...
Page 10: Various Sensors
B-443 Bar Code Printer Service Manual 1.7 Various Sensors (1) Feed Gap Sensor The feed gap sensor detects label gap to locate the starting print position of the next label. The sensor is mounted 4 mm off the center line of the main mechanism.
Page 11 B-443 Bar Code Printer Service Manual In case of Ticket The default sensor position is (1) as shown in the figure below. To change to the (2) position, the customer should notify the manufacturer in advance. There can be only one position for the sensor.
Page 12: Supply Specifications
Two types of media are available for B-443: label and ticket. In B-443, there are two types of sensors for paper: gap sensor and black mark sensor. Label and ticket can be further classified into direct thermal type or thermal transfer type.
Page 13: Approved Labels
B-443 Bar Code Printer Service Manual 2.3 Approved labels Plain paper Ricoh 130LAB thermal label Flexcon 31800 PVC label Flexcon 22830 Polyester label. 2.4 Ribbon Sizes and Shapes Item Specifications Ribbon shape Spool type Max. 110mm Ribbon width Min. 40mm Max.
Page 14: Approved Ribbons
*1:This cannot be used when a serial bar code is printed, and print density should be lower at 40 degree. *2:This cannot be used when a serial bar code is printed at 3 inch per sec. Note: The ribbon end must be transparent for B-443. 2.6 Detail test data (1).
Page 15 B-443 Bar Code Printer Service Manual (4). SONY TR-4070, Flexcon 31800 PVC label, Static Electricity Max.0.6 KV Speed 1.5, Density 8~15 Speed 2.0, Density 9~15 Speed 3.0, Density N/A (5). RICOH B-110C Flexcon 31800 PVC label, Static Electricity Max.0.9 KV Speed 1.5, Density 6~15...
Page 16: Electronics
0.1u Fig. 3.1 MCU Circuit Diagram The above is the MCU circuit diagram. The main board of B-443 consists of five system blocks: A. Memory System (decoder & memory block) B. Motor System (stepping motor, DC motor and cutter block) C.
Page 17 B-443 Bar Code Printer Service Manual The figure below shows the PCB system area. COMMUNICATION MOTOR PORT SYSTEM DECODER SYSTEM PRINTHEAD SYSTEM POWER SYSTEM Fig. 3.2 System Blocks of PCB MEMORY CARD MEMORY CONNECTOR SYSTEM November, 99 All Rights Reserved...
Page 18: Mcu Pin Description
B-443 Bar Code Printer Service Manual 3.2 MCU Pin Description Name Input/Output Function Vcc, Vss Power supply Supply 5V±10% to Vcc and 0V to Vss. CNVss CNVss input Input This pin controls the processor mode. Connected to Vss for single-chip mode, to Vcc for external ROM types.
Page 19 B-443 Bar Code Printer Service Manual A8/D8~ Address When the BYTE pin is set to “ L” in memory A15/D15 medium-order/ expansion mode or microprocessor mode and data high-order external data bus is 16-bit width, high-order data (D15~D8) is input or output when /E output is “...
Page 20: Reset Circuit
B-443 Bar Code Printer Service Manual 3.3 Reset Circuit RESET S-807 0.1u 0.1uF Fig. 3.3 Reset Circuit This is the reset circuit .The 80746ALO IC outputs the system reset signal of “ LOW” when the driving voltage is lower than 4.6V (Typical).
Page 21: Connector Circuit Diagram
B-443 Bar Code Printer Service Manual 3.5 Connector Circuit Diagram PH_DETECT PH_DERECT PH_DERECT CUTTER CUTTER&PEEL +24V 74HC04 74HC04 74HC04 6 PIN /RESET RIBBON B.L. U11A DCMA 74LS14 0.1u DCMB MEM. CARD DC MOTOR DC_MOTOR_A BEAD DC_MOTOR_B Memory card connector GAP_EMITTER 6 PIN Fig.
Page 22 B-443 Bar Code Printer Service Manual P57: the detect pin of the decoder sensor. (normally at ‘ high’ level) P53: the detect pin of the cutter sensor (check if the cutter is in right position, normally at ‘ high” level) JP8: the connector which connects the external memory module.
Page 23: Real-Time Clock Circuit
B-443 Bar Code Printer Service Manual 3.6 Real-Time Clock Circuit BUZZER /RES DO[0..7] DO[0..7] 5.6K RCLR 0.1u DS12887A Fig. 3.6 Real-Time Clock Circuit This is a real-time clock circuit. MCU will read the date/time and write the data when the signal of RTC is low.
Page 24: Decode Circuit
This is the decode circuit which calculates memory map. U3 is used to latch addresses from DO0 to DO7. The main function of U8 and U10 are to decode the address and memory control signal .The memory map of B-443 is as shown in Figure 1.2. The pin function description is as follows: AS: The address strobe control signal of RTC.
Page 25 EXTERNAL ROM2 (MEMORY CARD) 200000H 1FFFFFH FLASH ROM EXTERNAL ROM1 100000H (MEMORY CARD) 0FFFFFH FLASH ROM INTERNAL ROM2 (ON BOARD) 080000H 07FFFFH 002000H FLASH ROM INTERNAL ROM1 SYSTEM BIOS Fig. 3.8 The Memory Map of B-443 November, 99 All Rights Reserved...
Page 26: Thermal Head Drive/ Protection And History Control Circuit
B-443 Bar Code Printer Service Manual 3.8 Thermal Head Drive/ Protection and History Control Circuit 300DPI 200DPI STROBE1 0.1u HISTORY 74HC08 JP92B 74HC08 74HC04 PGND PGND PGND PGND LGND 300DPI 200DPI /LAT /LAT STB4 STB5 STB6 VH_POWER /RESET 74HC08 300p...
Page 27: 5V Converter Circuit
B-443 Bar Code Printer Service Manual 3.9 24V/5V Converter Circuit 0.01u +24V DC JACK SR505 SW SPDT 330u Vref 1N5819 COMM_CHOKE ¹q¸Ñ¹q®e 34063 470/2W 10u/35V 220p 1500pF 1000u/35V 0.1u 470u 47u/35V 0.01u BEAT CHOKE Fig. 3.10 24V/5V Converter Circuit Figure 3.10 is the DC-TO-DC (DC24V to DC 5V) converter circuit, which is a boost system circuit structure.
Page 28: Stepping Motor And Dc Motor Driver/ Protection Circuit
B-443 Bar Code Printer Service Manual 3.10 Stepping Motor And DC Motor Driver/ Protection Circuit BEAD FUSE2 FUSE2 L19 BEAD 0.1u MOTOR_GND JP12 470u L31 BEAD MOTOR_GND BEAD STEP MOTOR 0.1u BEAD 470u PHASE1 PHASE 0.01uF PBL3770A BEAD DCMA BEAD...
Page 29: Communication (Serial & Parallel Port) Circuit
B-443 Bar Code Printer Service Manual 3.11 Communication (Serial & Parallel Port) Circuit CGND U11C U11B U22A 74LS14 74LS74 220p 74LS14 220p 220p 220p 220p CVCC 220p CGND CENTRONIC 220p 220p JP14 220p DO[0..7] DO[0..7] 74LS374 BEAD CENTRONIC U11D 74LS14 U11E 0.1u...
Page 30: Cutter Drive Circuit
B-443 Bar Code Printer Service Manual 3.12 Cutter Drive Circuit U12B +24V RCext 150K 10u\TANT Cext IN4002 /RESET CTSENS TIF32C U20A 74HC123 2003 U20C CUTTER 2003 U20B 2003 CUTTER&PEEL PEEL U20D 2003 Fig. 3.13 Cutter Drive Circuit This is the cutter drive circuit. The RESET signal is 1 when the printer is turned on. CUTTER controls the activation of the cutter.
Page 31: Mainboard Replacement
B-443 Bar Code Printer Service Manual 3.13 Mainboard Replacement 1. Turn off the printer power. 2. Remove the power cord and RS-232 and/or parallel port cable. 3. Open the top cover of the printer. 4. Remove the printer front panel.
Page 32 B-443 Bar Code Printer Service Manual 6. Release the cable tie and remove the peel-off sensor connector. Peel-Off Sensor Connector Cable Tie Cutter Connector Fig. 3.16 Cable tie and peel-off sensor connector 7. Remove the screws on the lower left and lower right corners of main mechanism.
Page 33 B-443 Bar Code Printer Service Manual 8. Remove the four screws of the internal label roll mount. Fig. 3.18 Remove screws of the label roll mount 9. Move the mechanism about 5 mm in the label feed direction. 10. Take out the internal label roll mount and remove the connector.
Page 34 B-443 Bar Code Printer Service Manual Connector Description External button, LED connector Ribbon sensor receiver connector Cutter and Peel off sensor connector Black mark sensor connector Gap / ribbon transmit sensor connector DC motor and encoder connector TPH head up switch connector...
Page 35: Flash Memory Replacement
B-443 Bar Code Printer Service Manual 3.14 Flash memory Replacement If files can not be stored in the FLASH memory or if the firmware can not be upgraded, the first LED turns ON and OFF incessantly to indicate the Flash memory fails. Please follow the steps below to replace the flash memory.
Page 36: Cutter, Dc Motor, Stepping Motor Driver Ic Replacement
B-443 Bar Code Printer Service Manual 3.15 Cutter, DC Motor, Stepping Motor Driver IC Replacement Cutter Driver IC Flash Stepping DC Motor Memory Motor Driver Driver IC Fig. 3.21 Driver IC Locations If the DC motor (ribbon rewind spindle) rotates back and forth, please check the DC motor driver IC, make sure it is firmly inserted in the IC socket and is not burned.
Page 37: Mechanism
B-443 Bar Code Printer Service Manual 4. MECHANISM 4.1 Cutter Installation 1. Turn off the printer power. 2. Open the top cover of the printer. 3. Remove the printer front panel slowly and carefully. (Cf. Fig. 3.14) 4. Remove the two screws and the metal cover. (Cf. Fig. 3.15) 5.
Page 38: Print Head Replacement
B-443 Bar Code Printer Service Manual 4.2 Print Head Replacement 1. Turn off the printer power. 2. Remove the RS-232 cable and power cord. 3. Open the top cover. 4. Remove the ribbon and label roll. 5. Open the print carriage.
Page 39 B-443 Bar Code Printer Service Manual Note: The key of connector must be positioned upward. Do not touch the elements of the print head. Do not disassemble the print head. 8. Tidy up the cable so that it does not protrude or interfere with the ribbon.
Page 40: Dc Motor Replacement
B-443 Bar Code Printer Service Manual 4.3 DC Motor Replacement 1. Turn off the printer power. 2. Remove the power cord and RS-232 and/or parallel port cable. 3. Open the top cover of the printer. 4. Remove the printer front panel. (Cf. Fig. 3.14) 5.
Page 41: Ribbon Rewind Spindle Encoder Replacement
B-443 Bar Code Printer Service Manual 4.4 Ribbon Rewind Spindle Encoder Replacement The encoder is installed on the gear box of DC motor, and is used to detect if the ribbon can be unerringly rewound by the spindle. The encoder is connected to JP6 on the mainboard. Please switch the printer to thermal transfer mode.
Page 42: Felt Fabric Replacement
B-443 Bar Code Printer Service Manual 4.5 Felt Fabric Replacement Felt Fabric is located in the ribbon supply spindle. It is used to tighten the ribbon to prevent it from getting wrinkled during printing. If the ribbon does not stretch tight when label back feeds during printing, please replace the felt to secure the best printing quality.
Page 44: Stepping Motor Replacement
B-443 Bar Code Printer Service Manual 4.6 Stepping Motor Replacement 1. Turn off the printer power. 2. Remove the power cord and RS-232 and/or Parallel port cable. 3. Open the top cover of the printer. 4. Remove the printer front panel. (Cf. Fig. 3.14) 5.
Page 45: Black Mark Sensor / Gap Sensor (Receiver) Replacement
B-443 Bar Code Printer Service Manual 4.7 Black Mark Sensor / Gap Sensor (Receiver) Replacement Black mark sensor is reflection type sensor. It is connected to JP4 (3 pin connector). A multi- meter is used to measure the signal of Pin2 to test if there is voltage variation when black mark is detected.
Page 46: Ribbon Sensor (Receiver) Replacement
B-443 Bar Code Printer Service Manual 4.8 Ribbon Sensor (Receiver) Replacement 1. Turn off the printer power. 2. Remove the power cord and RS-232 and/or parallel port cable. 3. Open the top cover of the printer. 4. Remove the printer front panel. (Cf. Fig. 3.14) 5.
Page 47 B-443 Bar Code Printer Service Manual Fig. 4.12 Ribbon Sensor Fig. 4.13 Spring Installation on Left Side and Right Side Note: The left side spring and the right side spring are different in shape. The right side spring has a straight end, whereas the left side spring has an end that is curved 90 degrees.
Page 48: Ribbon Sensor (Transmitter) / Gap Sensor (Transmitter) Replacement
B-443 Bar Code Printer Service Manual 4.9 Ribbon Sensor (Transmitter) / Gap Sensor (Transmitter) Replacement 1. Please follow the steps in Section 4.6 to separate the upper mechanism from the lower mechanism. 2. The ribbon sensor (transmitter) is located in the center of the lower mechanism.
Page 49: Platen Replacement
B-443 Bar Code Printer Service Manual 4.10 Platen Replacement 1. Turn off the printer power. 2. Remove the power cord and RS-232 and/or parallel port cable. 3. Open the top cover of the printer. 4. Remove the printer front panel. (Cf. Fig. 3.14) 5.
Page 50 B-443 Bar Code Printer Service Manual Bracket Thermal Head Printer Carriage Release Lever E Ring Fig. 4.16 Printer carriage release lever and E ring Stripper Plate Platen Bush Printer Carriage (Right Side) Release Lever Teflon Tube E Ring Fig. 4.17 Printer carriage release lever arm and E ring 19.
Page 51 B-443 Bar Code Printer Service Manual Teflon Tube Fig. 4.18 Teflon tube and metal rod Platen Bush (Left Side) E Ring Fig. 4.19 Remove E ring and platen bush 22. Move the platen a bit to the right of the mechanism, take out the platen.
Page 52: Head-Up Sensor Replacement
B-443 Bar Code Printer Service Manual 4.11 Head-Up Sensor Replacement 1. Remove the four screws with an electric screwdriver 1. Take out the ribbon mechanism, place it on the right side 2. Remove the screws on either side with an electric screw driver...
Page 53 B-443 Bar Code Printer Service Manual 2. Lay a piece of cloth under the printhead 2. Remove the 2 printhead spring blade fixing screws bushes 3. Pry off the left and right with a flat screw November, 99 All Rights Reserved...
Page 54 B-443 Bar Code Printer Service Manual torsion 2. Pry off the springs on either side spring 4. Press the torsion , lift main mechanism cover with fingers forward 4. Press the co er with the thumb, pull up- and with the fingers...
Page 55 B-443 Bar Code Printer Service Manual printhead 5. Place on the cloth with the cover facing up 5. Remove screw and touch spring with a cross screwdriver 6. Replace and fix the 1.7*3 screw and compression spring in place November, 99...
Page 56 B-443 Bar Code Printer Service Manual screws 7. Loosen the 3 M3*6 on the printhead bracket printhead 8. Take out the bracket, remove the spring blade 8. Replace printhead bracket, put back the spring blade November, 99 All Rights Reserved...
Page 57 B-443 Bar Code Printer Service Manual 9. Fasten the M3*6 ground wire screw with 2 washers, then lock the M3*6 TPH screw 10. Press on one end of the torsion spring with both thumbs, with fit in the main mechanism upper cover...
Page 58 B-443 Bar Code Printer Service Manual 11. Press down with both thumbs, fit in the bushes with both index fingers spring 11. Align printhead bracket blade with the tenons ofupper cover, fit the two together 11. Fix the two in place with 2 2.6*12 screws, adjust the height of the screw...
Page 60: Parts List
B-443 Bar Code Printer Service Manual 4.12 Parts List • Cover and Panels Ref. Part No. Description Remarks List Price Screw, φ3x8 37-1403008-34 30-0130050-00 Memory Module Cover 98-0130057-00 Push Botton Box Ass’ y 98-0181009-00 1 MB Memory Module Option 98-0181010-00...
Page 62 B-443 Bar Code Printer Service Manual ‚ Ribbon Mechanism Assembly Ref. Part No. Description Remarks List Price 98-0130019-10 Ribbon Spindle Ass’ y 98-0180009-10 Ribbon Mechanism Ass’ y Screw, φ3x5 Tap4 Round + Black 37-1403005-32 Screw, φ3x8 37-1403008-34 Screw, φ3.5x10 Tap2 Round + Yellow...
Page 64 B-443 Bar Code Printer Service Manual ƒ Mechanism Upper Cover Assembly Ref. Part No. Description Remarks List Price 98-0180069-00 Mechanism Upper Cover Ass’ y Screw, φ3x8 37-1403008-34 Screw, φ2.6x12 Tap4 37-1202612-22 37-1503006-34 Screw, M3x6 Round + Ni Screw, φ3x15 Tap4 Round + Ni 37-1403015-32 Screw, φ3.5x8...
Page 66 B-443 Bar Code Printer Service Manual „ Mechanism Lower Cover Assembly Ref. Part No. Description Remarks List Price 98-0180070-00 Mechanism Lower Cover Ass’ y 98-0180013-00 PCB-D Ass’ y (Gap/Ribbon Sensor) 65-0010005-00 Stepping Motor Screw, φ3x8 37-1403008-34 Screw, φ3x6 Tap4 Round/W + Ni...
Page 68 B-443 Bar Code Printer Service Manual … Accessories Ref. Part No. Description Remarks List Price 72-0010001-00 Parallel Port Cable 98-0130050-00 External Label Roll Mount Ass’ y 62-0130003-01 Power Adapter 36-0130038-00 Print Head Cleaning Pen Option November, 99 All Rights Reserved...
Page 70: Trouble Shooting
B-443 Bar Code Printer Service Manual 5. TROUBLE SHOOTING 5.1 Error Messages Syntax Error: The command format is incorrect. Check user’ s manual to be sure. The serial port setting is incorrect. Check DIP switch and reset the printer. Out of Range: Numeric input is too large to be processed.
Page 71: Trouble Shooting
B-443 Bar Code Printer Service Manual 5.2 Trouble Shooting Problems Solutions 1. Ribbon does not advance. Check the printing mode setting and reset the printer. 2. Poor print quality. Clean the print head. Adjust the print density setting. 3. Only prints diagonal pattern in the self-test.
Page 72: Calibrate The Gap Register
B-443 Bar Code Printer Service Manual 5.3 Calibrate the Gap Register Install the label. Turn on the printer power while pressing the PAUSE button. The printer will calibrate the transparency of the backing paper and adjust the gap register. 5.4 Self-test Install the label.
Page 73: Testing Sensors
B-443 Bar Code Printer Service Manual 5.7 Testing Sensors A. Checking Ribbon Sensor Switch the multimeter to the DC gear. Connect the black wire to DC GND, and the red wire to PIN2 of JP2. 1. When ribbon is detected between TX and RX of the ribbon sensor, the measured voltage should be 5 Vdc.
Page 74 B-443 Bar Code Printer Service Manual D. Checking Black Line Sensor Switch the multimeter to the DC gear. Connect the black wire to DC GND, and the red wire to PIN2 of JP4. Load black line label on the printer.
Page 75: Cleaning The Print Head
B-443 Bar Code Printer Service Manual 5.8 Cleaning the Print Head The printer should be cleaned regularly to retain high quality and optimum performance. The greater the usage of the printer, the more frequent the cleaning. 1. Turn the power off 2.
Page 76 This manual may be changed or revised without notice. If you find any misprints or omissions, please contact directly to the TAIWAN SEMICONDUCTOR promptly. (Facsimile No. +886-2- 2912-2499) TOSHIBA TEC and TAIWAN SEMICONDUCTOR cannot be held responsible for any trouble which have been caused by misprints or omissions. Safety Summary Personal safety in handling or maintaining the equipment is extremely important.

TEC B-443 Service Manual

1 Fundamentals about the System

2 Supply Specifications

3 Electronics

4 Mechanism

5 Trouble Shooting

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