Citizen CT-S300 Service Manual
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Citizen CT-S300 Service Manual

Line thermal printer
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Service Manual

LINE THERMAL PRINTER
CT-S300
MODEL
Rev. 2.00 Issued on Oct. 7, 2004

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Summary of Contents for Citizen CT-S300

  • Page 1: Service Manual

    Service Manual LINE THERMAL PRINTER CT-S300 MODEL Rev. 2.00 Issued on Oct. 7, 2004...
  • Page 2 CT-S300 Service Manual REVISION Rev. No. Date Comment Rev. 1.00 2004/01/16 Newly issued Rev. 2.00 2004/10/07 Changed “5.1 Part List for Mechanism” Added “5.3 Part List for PCB Control Assy”...

  • Page 3: Table Of Contents

    CT-S300 Service Manual CONTENTS INTRODUCTION ............................1 1. FEATURES ............................1 2. SPECIFICATIONS..........................2 3. DISASSEMBLY AND REASSEMBLY ....................3 3.1 Tools Used ..............................3 3.2 Disassembly Procedure ..........................4 3.2.1 Overall Disassembly ........................4 3.2.2 Disassembly of Mechanism Chassis Assembly ................5 3.2.3 Disassembly of Platen Assembly .....................

  • Page 4: Introduction

    CT-S300 Service Manual INTRODUCTION This manual describes the disassembly, reassembly, and maintenance procedures of the line thermal printer CT- S300. 1. FEATURES • Compact design • Paper drop-in mechanism that facilitates setting paper and cleaning the print head • High-speed printing at 100 mm/s max.

  • Page 5: Specifications

    CT-S300 Service Manual 2. SPECIFICATIONS Item Specifications Model CT-S300-RF120 CT-S300-RF230 CT-S300-PF120 CT-S300-PF230 CT-S300-UF120 CT-S300-UF230 Print method Line thermal dot print method Print width 72 mm/576 dots, (48 mm/384 dots) 8 × 8 dots/mm (203 dpi) Dot density Print speed 100 mm/s (Fastest, print density level 0), 800 dot lines/s) Font A: 48/42 (32/30) columns;...

  • Page 6: Disassembly And Reassembly

    CT-S300 Service Manual 3. DISASSEMBLY AND REASSEMBLY Note the following items when maintaining the printer. • Do not disassemble, reassemble, or adjust the printer unnecessarily when the printer is operation is satisfactory. • Do not loosen the screws fixing each component carelessly.

  • Page 7: Disassembly Procedure

    CT-S300 Service Manual 3.2 Disassembly Procedure 3.2.1 Overall Disassembly (1) Removing top cover Hook • Place the printer in vertical state. • Open the paper cover using the cover open lever. • Remove the printer chassis from the four “hooks”...

  • Page 8: Disassembly Of Mechanism Chassis Assembly

    CT-S300 Service Manual Control board assembly (3) Removing interface board assembly M3 × 6 (ST) • Remove the two M3 × 6 (ST) screws. • Remove the interface board assembly. Interface board assembly (4) Removing control board assembly • Remove the two M3 × 6 (ST) screws.
  • Page 9 CT-S300 Service Manual (4) Removing gear holder and reduction gear Gear holder • Remove them by removing the M3 × 6 (ST) Reduction gear screw. (5) Removing stepping motor • Remove the M3 × 6 (ST) screw. • While unhooking the flange of the motor, remove the stepping motor.

  • Page 10: Disassembly Of Platen Assembly

    CT-S300 Service Manual 3.2.3 Disassembly of Platen Assembly (1) Removing platen assembly • Remove the platen assembly by removing the two M3 × 10 tapping (ST) screws. M3 × 10 (ST) M2 × 4 (BT) (2) Removing fixed blade. • Remove the fixed blade by removing the M2 × 4 screw.

  • Page 11: Reassembly Procedure

    CT-S300 Service Manual 3.3 Reassembly Procedure Reverse the procedure in “3.2. Disassembly Procedure”. 3.4 Lubrication (1) Oil (Grease) Furoyl G--943 (Kanto Kasei Co., Ltd.) (2) Lubrication points ➀ Gear holder shaft ➁ Platen bearing ➂ Platen bush periphery ➀ ➁...

  • Page 12: Troubleshooting

    CT-S300 Service Manual 4. TROUBLESHOOTING 4.1 Troubleshooting Procedure When a trouble occurs, confirm its phenomenon, locate a defective part in accordance with 4.2 Troubleshooting Guide, and troubleshoot as described below. • Phenomenon: Find a trouble phenomenon in this column. If there are multiple phenomena, take all the corresponding items into consideration.
  • Page 13 CT-S300 Service Manual • Printing failure Phenomenon Cause Check Method Remedy No printing Faulty DC output voltage Check whether the Use the specified AC from the AC adapter specified AC adapter is adapter. used. Faulty control PCB assy — Replace the control PCB assy.
  • Page 14 CT-S300 Service Manual • Paper feed failure Phenomenon Cause Check Method Remedy Paper is not fed or fed Faulty connection of the Check connection of the Connect the connector irregularly motor connector motor connector. correctly. Defective motor Measure the supply...
  • Page 15 CT-S300 Service Manual • Faulty sensor Phenomenon Cause Check Method Remedy Does not detect presence Faulty paper sensor Check whether the ERROR Replace the sensor PCB of paper. lamp flickers when paper is assy. out. Foreign substance is Check whether any foreign...

  • Page 16: Service Parts List

    CT-S300 Service Manual 5. SERVICE PARTS LIST 5.1 Parts List for Mechanism Q’ty Ref. Parts No. Description Remarks 100118-00 Top Cover Assy 100118-00-B Top Cover Assy (Black) 600387-00 Roller 600370-00 Printer Cover 600370-00-B Printer Cover (Black) 600371-00 LED Guide 100113-00...
  • Page 17 CT-S300 Service Manual Q’ty Ref. Parts No. Description Remarks 200041-00 PE PCB Assy SEC-3784 500322-00 PE PCB Holder 90-0197 PNE PCB Assy SEC-2856 (1) 1 PNE sensor 200055-00 2 PNE sensors (25-0379) (PNE Cable Assy) SEC-2854 600374-00 PNE Lever 1 PNE sensor...

  • Page 18: Exploded View Of Mechanism

    CT-S300 Service Manual 5.2 Exploded View of Mechanism • Exploded View-1...
  • Page 19 CT-S300 Service Manual • Exploded View-2...

  • Page 20: Parts List For Pcb Control Assy

    CT-S300 Service Manual 5.3 Parts List for PCB Control Assy Q’ty Ref. Parts No. Description Remarks H130005-10 uPD703130 FP 100 Pin H120005-00 Flash Memory F-Memory 8 Mbit 55 ns 48 PIN TSOP IC101 H120005-00 Kanji ROM F-Memory 8 Mbit 55 ns 48 PIN TSOP...

  • Page 21: Main Board

    CT-S300 Service Manual 5.4 Main Board...

  • Page 22: Circuit Diagram

    CT-S300 Service Manual 6. CIRCUIT DIAGRAM 6.1 Main Board IC101 LA3D IC8C RA3 100K LA4D 74LV32A LA3C 3.3K LA5C S5688B IC9A 2SC3786 100K RA114C1K LA3B 74HC05 IC9D LCAS S5688B RA114D1K 2SC3786 74HC05 UCAS LA3A RA1 100K MSM514260 VCC 1, 6,...

  • Page 23: Serial Interface

    CT-S300 Service Manual 6.2 Serial Interface LA1A LA1B LA1C LA1D IC 1 R1IN R1OUT LA2A R2IN R2OUT VC C T1IN T1OUT LA2B T2IN T2OUT LA2C VC C 16V100u SP232ECN LA2D 70013-025-03(04) R1IN R1OUT R2IN R2OUT T1IN T1OUT T2IN T2OUT D S 1...

  • Page 24: Parallel Interface

    CT-S300 Service Manual 6.3 Parallel Interface IC3A RA6D RA3 3.3K 74LV74A VCC 14 GND 7 VCC 20 74HCT573 100K GND 10 IC5E IC5D RA7 33 10 0 74LV14A VCC 14 GND 7 VC C RA8 33 74HCT573 IC3B VCC 20 57RE-40360-730B 3.3K...

  • Page 25: External View

    CT-S300 Service Manual 7. EXTERNAL VIEW (Unit: millimeter) AC Adapter Type Built-in Power Supply Type...

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