Citizen CBM-270 Service Manual

Line thermal printer
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CBM-270 Service Manual
CITIZEN

Service Manual

Model : CBM-270
Line Thermal Printer
Rev. 1.00 Newly issued on 05. Jan. 1999
Japan CBM Corporation
Information Systems Div.

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Summary of Contents for Citizen CBM-270

  • Page 1: Service Manual

    CBM-270 Service Manual CITIZEN Service Manual Model : CBM-270 Line Thermal Printer Rev. 1.00 Newly issued on 05. Jan. 1999 Japan CBM Corporation Information Systems Div.
  • Page 2 INTRODUCTION This manual describes the disassembly, reassembly, and maintenance procedures of the Line Thermal Printer CBM-270. It is intended for field maintenance men. FEATURES This small line thermal printer is designed for various types of data communication terminals and measuring instrument terminals.
  • Page 3: Table Of Contents

    CBM-270 Service Manual CBM-270 Service Manual CONTENTS 1. HANDLING AND MAINTENANCE OF PRINTER..................4 2. SPECIFICATIONS.............................5 2.1 Basic Specifications ..............................5 2.2 Paper Specifications (Recommended Paper) ....................... 6 3. DISASSEMBLY AND REASSEMBLY......................7 3.1 Disassembly Procedure ..............................7 3.2 Reassembly Procedure ............................... 12 4.
  • Page 4: Handling And Maintenance Of Printer

    CBM-270 Service Manual CBM-270 Service Manual 1. HANDLING AND MAINTENANCE OF PRINTER See "Unpacking" and "OPERATION" in the User's Manual accompanying the printer body.
  • Page 5: Specifications

    CBM-270 Service Manual CBM-270 Service Manual 2. SPECIFICATIONS Basic Specifications Model CBM-270-RF120-* CBM-270-RF230-* Item CBM-270-PF120-* CBM-270-PF230-* Printing system Line thermal dot printing Printing width 48 mm (384 dots/line) Dot density 8 dots/mm (Width, Length) Paper feed pitch 0.125 mm Printing speed Approx.
  • Page 6: Paper Specifications (Recommended Paper)

    CBM-270 Service Manual CBM-270 Service Manual 2.2 Paper Specifications 2.2.1 Recommended Paper (1) Thermal paper roll •Type : Thermal paper •Paper width : 58 + 0/- 1 mm •Paper thickness : 60∼75µm •Roll diameter : φ83 mm or less •Printing surface : Outside of the roll (Surface) •Recommended paper...
  • Page 7: Disassembly Procedure

    CBM-270 Service Manual CBM-270 Service Manual each setscrew unless required. (2) After inspecting the printer, be sure to confirm that it is free from error. (3) Never try to print without setting the printing paper in the printer. Confirm that it is properly set.
  • Page 8 CBM-270 Service Manual CBM-270 Service Manual 2. Removing the Screws from the Bottom of the Main Body (1) Turn over the printer body. (2) Remove two M3 × 10 (BT) screws. Then, turn back the printer body to its original position. Do this, holding its upper and bottom covers.
  • Page 9 CBM-270 Service Manual CBM-270 Service Manual 4. Detaching the Platen Roller Unit (1) Raise the head-up lever. (2) Unlock the platen roller unit. Pull up the blue levers on both sides of the platen roller unit, while opening them outside.
  • Page 10 CBM-270 Service Manual CBM-270 Service Manual 6. Detaching the NPE Sensor Unit (1) Remove one M3 × 10 (BT) screw used to secure the NPE sensor unit. (2) Pull out a cable. 7. Detaching the Operation Panel Board (1) Remove two M2.6 × 8 (BT) screws. Turn over the upper cover and unscrew the operation panel board.
  • Page 11 CBM-270 Service Manual CBM-270 Service Manual 9. Detaching the Control Board (1) Remove one M3 × 8(BT) screw. (2) Turn on the Power switch. (3) Detach the board. Slightly opening outside the plastic part near the Power switch, slide it upward to the near side of the printer body to detach.
  • Page 12: Reassembly Procedure

    CBM-270 Service Manual CBM-270 Service Manual Reassembly Procedure Reassemble the disassembled parts in the reverse order of the disassembly procedure described in 3.1. CAUTION: 1. Route the cables very carefully so that they will not be caught. •The flat cable should be located on the board side.
  • Page 13: Troubleshooting

    CBM-270 Service Manual CBM-270 Service Manual 4. TROUBLESHOOTING Troubleshooting Procedure If the printer has a trouble, confirm its phenomenon, determine a defective part according to 4.2 Troubleshooting Guide, and then, repair it in the specified manner. • Phenomenon Find a corresponding trouble phenomenon in this column.
  • Page 14 CBM-270 Service Manual CBM-270 Service Manual • Power Supply Failure Phenomenon Cause Check Method Repair Method The power cannot be The AC adapter is not Connect the specified AC −−− turned on.(POWER lamp connected. adapter. not illuminated) The fuse is gone.
  • Page 15 CBM-270 Service Manual CBM-270 Service Manual • Printing Failure Phenomenon Cause Check Method Repair Method No printing Faulty power supply Check whether or not the Use the specified specified AC adapter. AC adapter is used. Faulty mounting Check mounting Mount...
  • Page 16 CBM-270 Service Manual CBM-270 Service Manual Phenomenon Cause Check Method Repair Method Too much ink blot Faulty power supply Check whether or not the Use the specified specified AC adapter is AC adapter. used. Foreign substance adhered Check the thermal head...
  • Page 17 CBM-270 Service Manual CBM-270 Service Manual • PNE Sensor Failure Phenomenon Cause Check Method Repair Method PNE is always detected. Faulty sensor Use a tester to check Replace the PNE sensor. whether or not a supply voltage and signal are normal.
  • Page 18: Service Parts List

    CBM-270 Service Manual CBM-270 Service Manual • Label Sensor Failure (Only When the Printer Accommodates the Labels) Phenomenon Cause Check Method Repair Method A label is not detected. Not set for the label printer Check whether or not the Set the DIP switch for DIP switch has been set for the label printer.
  • Page 19 CBM-270 Service Manual CBM-270 Service Manual E62010830 Upper Cover 270 E5200-350 Operation Panel Sheet 270 E6220-640 Paper Cutter 270 E4035-850 FG Cable SEC-2001-2 E40000220 Operation Panel Board Assembly LT286 Printer Mechanism LT-286 E62020360 Bottom Cover E6302-430 Rubber Foot SEC-2541 E4035-720...
  • Page 20: Disassemble Drawing

    CBM-270 Service Manual CBM-270 Service Manual Disassemble Drawing...
  • Page 21 CBM-270 Service Manual CBM-270 Service Manual 5.2.1 Drawing for Operation Panel PCB A: Brown B: Red C: Orange D: Yellow E: Green F: Blue Symbol Part Name Maker SKHHAN ALPS LED1 SEL2410E SANKEN LED2 SEL2110S SANKEN LED3 SEL2110S SANKEN Material Paper Phenol Single-sided Board 1.6 Thick UL Certified...
  • Page 22: Parts List For Control Board

    CBM-270 Service Manual CBM-270 Service Manual Parts List for Control Board Ref. No. Q'ty Parts No. Description Remarks...
  • Page 23 CBM-270 Service Manual CBM-270 Service Manual E107-280 H8/3002 E104-530 Gate Array CBM-202LA-00 E107-330 SRAM TC55257DFL-55L E104-650 EPROM LE27C512F-45 Kanji ROM CBM-202KG-01 Japanese Spec. Only Reset IC M51953BFP E2020050 I/F IC MAX202CSE SP232ACN(SIPEX) (IC4) (IC4) E4800870 IC Socket DILB-28P E390-350 Motor Driver LB1831M...
  • Page 24 CBM-270 Service Manual CBM-270 Service Manual Ref. No. Q'ty Parts No. Description Remarks...
  • Page 25 CBM-270 Service Manual CBM-270 Service Manual R1,3,5,7-9,18, R1,3,5,7-9,18, Chip Resistor CR10-103J 27,38,40 27,38,40 R2,14-17,21, R2,14-17,21, Chip Resistor CR10-333J 22,25 22,25 R4,6,10,12,13,1 9,23,26,29,39 Chip Resistor CR10-221J R4,6,10,12,13,19, 23,26,29,37,39 Chip Resistor CR10-221J Chip Resistor CR10-303J R20,24,28 R20,24,28 Chip Resistor CR10-683J C1,2 C1,2 E2010-945 Elec.Capacitor...
  • Page 26: Parts Layout Drawing

    CBM-270 Service Manual CBM-270 Service Manual Parts Layout Drawing 5.4.1 Serial Interface (Parts Side) Seral Interface (Parts Side) K270-01...
  • Page 27: Serial Interface (Solder Side)

    CBM-270 Service Manual CBM-270 Service Manual 5.4.2 Serial Interface (Solder Side) Serial Interface (Solder Side) K270-01...
  • Page 28: Parallel Interface (Parts Side)

    CBM-270 Service Manual CBM-270 Service Manual 5.4.3 Parallel Interface (Parts Side) Parallel Interface (Parts Side) K270-02...
  • Page 29: Parallel Interface (Solder Side)

    CBM-270 Service Manual CBM-270 Service Manual 5.4.4 Parallel Interface (Solder Side) Parallel Interface (Solder Side) K270-02 6. DRAWING Block Diagram...
  • Page 30 CBM-270 Service Manual CBM-270 Service Manual...
  • Page 31: Circuit Diagram

    CBM-270 Service Manual CBM-270 Service Manual Circuit Diagram 6.2.1 Serial Interface (CBM-270-RF)
  • Page 32: Parallel Interface (Cbm270-Pf)

    CBM-270 Service Manual CBM-270 Service Manual 6.2.2 Parallel Interface (CBM-270-PF)
  • Page 33: Outline Drawing

    CBM-270 Service Manual CBM-270 Service Manual 7. OUTLINE DRAWING...
  • Page 34 CBM-270 Service Manual CBM-270 Service Manual WALL MOUNTING HOLES LAYOUT DRAWING...

Table of Contents