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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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.
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.
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.
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...
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.
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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.
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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.
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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.
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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.
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.
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.
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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.
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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...
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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...
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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.
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.
CBM-270 Service Manual CBM-270 Service Manual Disassemble Drawing...
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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...
CBM-270 Service Manual CBM-270 Service Manual Parts List for Control Board Ref. No. Q'ty Parts No. Description Remarks...
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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...
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CBM-270 Service Manual CBM-270 Service Manual Ref. No. Q'ty Parts No. Description Remarks...