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CHAPTER 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 2. OUTLINE OF DRIVING CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . 3
CHAPTER 3. HANDLING THE PRINTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CHAPTER 4. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CHAPTER 5. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CHAPTER 6. DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . 12
CHAPTER 7. PWB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PARTS GUIDE (Ki-OB2359BHZZ)
APPLICATION MODEL (As of Dec.)
ER-A455X Series, ER-A450/A450S ("V" Version), ER-A450T ("U" and "A" Version)
SERVICE MANUAL
THERMAL PRINTER
CONTENTS
SHARP CORPORATION
PR-45M
MODEL
PR-45M : MANUAL CUTTER
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
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Table of Contents
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Summary of Contents for Sharp PR-45M
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Page 1: Table Of Contents
PR-45M MODEL PR-45M : MANUAL CUTTER CONTENTS CHAPTER 1. SPECIFICATIONS ........1 CHAPTER 2. -
Page 2: Chapter 1. Specifications
CHAPTER 1. SPECIFICATIONS 2. Specifications 1) Printer Item Description No. of station 2: Receipt and Journal Validation Printing system Line thermal No. of dot Receipt: 288 dots Journal 288 dots Dot pitch Horizontal: 0.125 mm Vertical: 0.125 mm 10 dots (W) × 24 dots (H) Font Printing capacity Receipt:... - Page 3 Item Description 12 × 24 font Printing format 1.5 (12dots) 1.5 (12dots) 0.125 UNIT: mm 2) Tools required for maintenance and repair NAME Remarks Mainrenance Cleaning brush Cotton swab Clean cloth Alcoholic solvent Ethanol, Methanol, IPA Cleaning brush Repair (+) Screwdriver (-) Screwdriver Tweezers Pliers...
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Page 4: Chapter 2. Outline Of Driving Circuit
CON5: <For Head up detector> CHAPTER 2. OUTLINE OF DRIVING CIRCUIT Signal Signal PHUPS GND-L CON6: <For Journal paper feed motor> 1. Block diagram & Connection diagram Signal Signal Signal 1) Block diagram VJCOM VJCOM /JPFA /JPFB /JPFC /JPFD PWB UNIT CON7: <For Receipt paper feed motor>... - Page 5 5) End sensor block diagram STROBE No. DOT No. Dots/Strobe Note 577 ∼ 864 Excluding dots No.1 ∼ 88, /STROBE4 377 ∼ 488 and 777 ∼ 864 433 ∼ 576 reflex photo sensor /STROBE3 289 ∼ 432 /STROBE2 1 ∼ 288 /STROBE1 0.1µF 4) Motor block diagram...
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Page 6: Chapter 3. Handling The Printer
:Head-up position CHAPTER 3. HANDLING THE The head is not in contact with the platen roller. PRINTER When the printer is out of service for a long time or when it is to be transported. The illustration shows the state when the PT-cover is removed for explanation purposes only. - Page 7 (2) When storing the printer 2. Loading the Paper (insertion and removal) Printer • When storing the printer, make sure to raise the head up lever Use only the paper specified in the specification sheet issued by our in the : Head up position.
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Page 8: Chapter 4. Maintenance
(2) Unloading the paper 2. Inspection The paper can be unloaded in two ways. The maintenance and inspection items for the printer are dividend Move the head up lever toward : Head up position and then pull into 2 types. One is "Daily checks" for the person who uses the the paper out by hand in the forward direction (feeding direction) printer, and the other is "Periodic checks"... -
Page 9: Chapter 5. Troubleshooting
(2) Periodic checks Check the items listed in the table below every 6 months, and correct any problems. Table of periodic checks Check items Standard Procedure • The mechanism should not have a lot of dirt, fuzz or dust on its •... - Page 10 Checkpoints and Phenomenon Condition Cause Level Repair Method Checking Method • Verify that nothing is • Clean the heating elements 2. Dots are A specific dot is (1) A foreign substance is missing not printed. attached to the heating attached to the heating of the printhead.
- Page 11 Checkpoints and Phenomenon Condition Cause Level Repair Method Checking Method • Verify that the specified roll • Use the specified roll paper. 6. Paper is not Roll paper is not (1) Roll paper feeding is fed. fed, and printing defective. paper (width, thickness, is repeated on and diameter) is being...
- Page 12 Checkpoints and Phenomenon Condition Cause Level Repair Method Checking Method • Verify that the paper take • If any wear or damage is 9. Roll paper is Roll paper is fed (1) The paper take up shaft is not taken up. but not taken up.
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Page 13: Chapter 6 Disassembly And Assembly
CHAPTER 6 DISASSEMBLY AND ASSEMBLY • This chapter mainly outlines the procedure for disassembling the Lubrication interval (rough guide) printer. It is advisable to reinstall the printer in the reverse order • Every 6 months from disassembly, referring to "Cautions to be taken when install- •... - Page 14 REMOVE THE MANUAL CUTTER [PARTS LIST] PARTS NAME Q’ty PRINTER FRAME45 G-COVER45 SCREW (M2 × 8) PT-COVER Fig. 2 [DISASSEMBLY METHOD] 1) Remove the G-COVER45 2) Remove the SCREWs . Remove the PT-COVER Using a screwdriver, raise the two tabs of the G-COVER45 Insert a flat-bladed screwdriver into the slit shown in the fig- and remove the G-COVER45 from the PRINTER FRAME45...
- Page 15 REMOVE THE HEAD UNIT [PARTS LIST] PARTS NAME Q’ty H-SPRING HEAD UP LEVER E-RING SCREW (M3 × 6) THERMAL HEAD H/C FRAME Use caution not to touch the heating element of the HEAD and PWB. Fig. 5 [DISASSEMBLY METHOD] [GREASING] 1) Remove the H-SPRINGs on the right and left sides of the Apply grease on the two mounting areas...
- Page 16 [Cautions to be taken when reinstalling] 1. Adjusting the HEAD position 3. HEAD cable Whenever the THERMAL HEAD is replaced with a new one, Install the 9-pin connector to the right end of the THERMAL adjust its position for the H/C FRAME HEAD and the 10-pin connector to the left end.
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Page 17: Remove The Platen Roller
REMOVE THE PLATEN ROLLER [PARTS LIST] PARTS NAME Q’ty E-RING PF-GEAR BUSHING PLATEN ROLLER "J" PLATEN ROLLER "R" PT-HOLDER E-RINGs (for bushing) Fig. 10 [DISASSEMBLY METHOD] 1) Remove the E-RING and the PF-GEAR 2. LUBRICATIONS 2) Remove the E-RINGs (for bushing) . - Page 18 REMOVE THE GEARS [PARTS LIST] PARTS NAME Q’ty IDLE GEAR-L SCREW (M3 × 5) WASHER TIMING BELT PULLEY GEAR SPOOL UNIT SCREW (M2×6) PULLY C-SPRING SP-GEAR IDLE GEAR-S Fig. 13 [DISASSEMBLY METHOD] [Cautions to be taken when reinstalling] 1. Please note the position of the WASHER when securing the <RIGHT SIDE>...
- Page 19 REMOVE THE HARDWARE PARTS [PARTS LIST] PARTS NAME Q’ty MICRO S/W UNIT PWB UNIT SCREW (M2 × 12) MOTOR SCREW (M3 × 6) SCREW (M3 × 5) Fig. 16 [DISASSEMBLY METHOD] [Cautions to be taken when reinstalling] 1. Wire the MICRO SWITCH UNIT cable as shown below.
- Page 20 REMOVE OTHER PARTS [PARTS LIST] PARTS NAME Q’ty FEED ROLLER SP-GUIDE SCREW (M3×5) STOPPER Fig. 19 [DISASSEMBLY METHOD] 1) Remove the two FEED ROLLERs from the PRINTER FRAME (45). 2) Remove the SCREW (M3×5) and remove the SP-GUIDE 3) Remove the STOPPER from the PRINTER FRAME (45).
- Page 21 GREASING POINTS WHEN INSTALLING SPOOL [PARTS LIST] PARTS NAME Q’ty SPOOL G/WHEEL grease grease Fig. 21 • Apply grease (G-36) in the points indicated in the figure. 1) Left end of the SPOOL 2) SP ANGLE in the area to which the right end of the SPOOL is fitted.
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Page 22: Chapter 7. Pwb Layout
CHAPTER 7. PWB LAYOUT CON6 CON7 CON1 CON4 CON5 CON2 CON3... - Page 23 PR-45M 1 Exteriors RCPS0216 – 1 –...
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Page 24: Pwb Unit
PR-45M 1 Exteriors PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK Screw (M2 × 5) 1 L X - B Z 6 7 8 6 B H Z Z 2 G C O V H 2 4 6 7 B H Z Z... - Page 25 © COPYRIGHT 2000 BY SHARP CORPORATION All rights reserved. Printed in Japan. No part of this publication may be reproduced, stored in a retrieval system, or transmitted. In any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.