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Star Micronics LC-4511 Technical Manual

Star Micronics LC-4511 Technical Manual

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DOT MATRIX PRINTER
LC- 4511
LC- 4521
TECHNICAL MANUAL
[ SECOND EDITION ]

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Summary of Contents for Star Micronics LC-4511

  • Page 1 DOT MATRIX PRINTER LC- 4511 LC- 4521 TECHNICAL MANUAL [ SECOND EDITION ]...
  • Page 2 However, should any errors be detected, STAR would greatly appreciate being in- formed of them. • The above notwithstanding, STAR can assume no responsibility for any errors in this manual. © Copyright 1996 Star Micronics Co.,Ltd.
  • Page 3 INTRODUCTION This manual describes the LC-4511,4521 dot matrix printer. It is designed for use as a reference for periodic inspections and maintenance procedures to be executed by service personnel. It is not intended for the general user. Users of this manual should have a basic knowledge and understanding of the English language.

  • Page 5: Table Of Contents

    CHAPTER 1 GENERAL SPECIFICATIONS General Specifications..................3 External Appearance and Composition .............. 6 Control Panel ......................8 3-1. Switch Combination Functions ................3-2. EDS Mode Settings ....................Parallel Interface....................10 4-1. General Specifications ..................4-2. Connector Signals ....................Serial Interface (optional) ................... 11 5-1.

  • Page 7: General Specifications

    150/360H Semi-condensed(15 cpi(I)) 225/240H 150/360H Condensed pica (17 cpi) 255/240H 170/360H Condensed elite (20 cpi) 300/240H 198/360H 24cpi (I) 360/240H 238/360H LC-4511 Pica (10 cpi) 225/120H 75/360H Elite (12 cpi) 270/120H 90/360H Semi-condensed(15 cpi(S)) 337/120H 112/360H Semi-condensed(15 cpi(I)) 168/240H 1112/360H...
  • Page 8 GENERAL SPECIFICATIONS H: half-dot (S) : Standard mode only (I) : IBM mode only Environment Operating temperature: 41°F to 95°F (5°C to 35°C) Storage temperature: –22°F to 149°F (–30°C to 65°C) Operating humidity: 30% to 80% (non-condensing) Storage humidity: 20% to 90% (non-condensing) Paper Cut-sheet (manual feeding) Paper width:...
  • Page 9 120V AC +10%/–17%, 230V AC +14%/–13%; 50/60Hz (depending on country of purchase) Power Consumption LC-4521 14W during standby / 63W during ASCII draft printing LC-4511 9W during standby / 45W during ASCII draft printing Options PT-15HA Pull Tractor Unit SF-15HA Single-Bin Automatic Sheet Feeder...

  • Page 10: External Appearance And Composition

    GENERAL SPECIFICATIONS External Appearance and Composition Paper guide Front cover Mute cover Interface connector Control panel Fig. 1-2 Front view of the Printer Release lever Power switch Platen knob Fig. 1-3 Rear view of the Printer – 6 –...
  • Page 11 GENERAL SPECIFICATIONS Fig. 1-4 Front cover removed Fig. 1-5 Diagram of internal layout – 7 –...

  • Page 12: Control Panel

    GENERAL SPECIFICATIONS Control Panel 3-1. Switch Combination Functions POWER HS-DRAFT/DRAFT BANK 10 CPI 12 CPI ROMAN 15 CPI SANSERIF COURIER COND MICRO FEED PRESTIGE ORATOR PROP SET/EJECT FONT PITCH FORM FEED LINE FEED ON LINE PARK BANK SWITCH STATUS ON/OFF PRINT EXIT Font Selection...

  • Page 13: Eds Mode Settings

    GENERAL SPECIFICATIONS 3-2. EDS Mode Settings Bank Switch Function Emulation STANDARD / EPSON Character Table (CT) Standard / EPSON mode Graphics Italics IBM mode IBM #2 IBM #1 RAM Usage Input Buffer Download Buffer Auto Sheet Feeder Not installed Installed Paper Out Enabled Disabled...

  • Page 14: Parallel Interface

    GENERAL SPECIFICATIONS Parallel Interface 4-1. General Specifications Item Specifications Interface Centronics-compatible Synchronization System Via externally supplied STROBE pulse I/F Protocol Using ACK and BUSY signals Logic Level Compatible with TTL level 5µs 5µs Data STROBE (EDS B-6 : ON) STROBE (EDS B-6 : OFF) BUSY t : More than 0.5µs...

  • Page 15: Serial Interface (Optional)

    GENERAL SPECIFICATIONS Serial Interface (optional) When using the serial interface, the optional Serial-Parallel Converter must be connected to the printer. 5-1. General Specifications (SPC-8K) Interface RS-232C-level Synchronization Asynchronous Baud rate 150, 300, 600, 1200, 2400, 4800, 9600, 19200 BPS (selectable) Word length Start bit Data bits...

  • Page 16: Connector Signal And Functional Descriptions (Spc-8K, Is-8H192)

    GENERAL SPECIFICATIONS 5-2. Connector Signal and Functional Descriptions (SPC-8K, IS-8H192) Pin No. Signal name Direction Function Printer chassis ground. — This pin carries data from the printer. This pin carries data to the printer. Always space. This signal is space when the computer is ready to send data. —...

  • Page 17: Ee-Prom Mode

    GENERAL SPECIFICATIONS EE-PROM mode 6-1. Outline These settings can be changed in the EE-PROM mode by writing data directly to the EE-PROM on the main logic board: Setting EE-PROM mode • Send <ESC><SUB>(09)H command. Canceling EE-PROM mode • Initialize the printer by sending <ESC>@ 6-2.

  • Page 18: Ee-Prom Map

    GENERAL SPECIFICATIONS 6-3. EE-PROM MAP Address Function Factory data EDS setting Bit Function b0 Emulation STANDARD/EPSON Character Table Standard / EPSON mode Graphics Italics IBM mode IBM #2 IBM #1 b2 RAM Usage Input Buffer Download Buffer b3 Auto Sheet Feeder Not installed Installed b4 Paper out Detector...
  • Page 19 GENERAL SPECIFICATIONS Address Function Factory data EDS setting IBM Code Page (Character Table=Graphics, IBM#1, #2) Function b0 b1 b2 b3 b4 Function b0 b1 b2 b3 b4 #437 #3844 #850 #3845 #860 #3846 #861 #3847 #863 #3848 #865 #852 #866 #737 #3840 #851...
  • Page 20 GENERAL SPECIFICATIONS Address Function Factory data Misalignment correction 120 DPI (F) Misalignment correction 180 DPI (H) Misalignment correction 180 DPI (F) Misalignment correction 240 DPI (H) Misalignment correction 360 DPI (H) Misalignment correction 120 DPI (H) DRAFT-TEXT Misalignment correction 360 DPI (H) LQ-TEXT (Not used) Misalignment correction Multi-part Mode...

  • Page 21: Rewriting The Ee-Prom

    GENERAL SPECIFICATIONS Address Function Factory data 3EH, 3FH IBM Initial Condition Area 40H~5EH Auto Start Area for Standard/EPSON Mode 5FH~7CH Auto Start Area for IBM Mode <FF> Control Code (00H = Space / 0FH = Null) Colour Information EE-PROM Check Code 6-4.
  • Page 23 CHAPTER 2 THEORY OF OPERATION Block Diagram ..................... 21 General Flow Chart (Main Logic Board) ............22 Power Supply Circuit ..................23 Mechanism ......................24 4-1. Print Head Mechanism ..................4-2. Print Head Carrying Mechanism ................. 4-3. Ink ribbon feed mechanism ................. 4-4.

  • Page 25: Theory Of Operation

    Panel circuit for manual control of the printer. Printer Mechanism Consists of a print head, carriage motor, paper feed motor, and detectors. Power Supply Unit Converts AC power to LC-4511 : 33VDC , LC-4521 : 40VDC and 5VDC. – 21 –...

  • Page 26: General Flow Chart (Main Logic Board)

    THEORY OF OPERATION General Flow Chart (Main Logic Board) The flow chart below shows you the general flow of editing and printing operations. POWER ON Initialization Ready state Read data Control code? Control code Data processing storage Print? (Line buffer determination) Data processing (Print out of data) or printing...

  • Page 27: Power Supply Circuit

    Input protection circuit circuit circuit 120VAC 220VAC 230VAC 240VAC Switching Ringing Out put section choke 33V DC ; LC-4511 (Transistor Q1) converter 40V DC ; LC-4521 Dropper Out put circuit 5V DC Transformer T1 Voltage Control circuit reference Photo-Coupler Fig. 2-3 Power Supply unit block diagram...

  • Page 28: Mechanism

    THEORY OF OPERATION Mechanism 4-1. Print Head Mechanism The print head consists of 24 needle wires and 24 print solenoids. The following explains how each needle wire operates during printing. When the print solenoid is energized, the clapper is attracted by the iron core and the needle wire is driven toward the platen.

  • Page 29: Print Head Carrying Mechanism

    THEORY OF OPERATION 4-2. Print Head Carrying Mechanism The print head carrying mechanism consists of a carriage, timing belt, carriage motor, and home position detector. Carriage The carriage is supported horizontally by the carriage stay and rear angle. The carriage moves from side to side with the print head mounted above it.

  • Page 30: Ink Ribbon Feed Mechanism

    THEORY OF OPERATION 4-3. Ink ribbon feed mechanism The ink ribbon feed mechanism is linked to the print head carrying mechanism so the ink ribbon always winds automatically in the same direction while the carriage moves left and right. The movement of the carriage along the serrated edge of the rear angle of the printer mechanism drives the idler gear. The rotation of the idler gear is conveyed sequentially to the gears that work and wind the ribbon.

  • Page 31: Paper Feed Mechanism

    THEORY OF OPERATION 4-4. Paper Feed Mechanism The paper feed mechanism consists of a paper feed motor, an idler gear, a platen and a traction unit. The paper feed motor is a PM (Permanent Magnet) 4-phase and 48 pulse motor. There are two ways of feeding paper into the printer: the friction method and the tractor method.

  • Page 32: Detectors

    The A/D converter in the CPU detects the print head temperature at power on and before each line begins to print. Thermistor Fig. 2-8 Printer head temperature detector circuit Control Method (by Text printing) ° ± ° Print Temperature (LC-4511) (LC-4521) Normal print ~ 130 ~ 120 Unidirectional print 130 ~ 135 120 ~ 130 Print Stop...
  • Page 33 THEORY OF OPERATION Paper end Detector The paper end Detector is located in the paper chute unit. The A/D converter in the CPU detects the presence or absence of paper. Paper Fig. 2-10 Paper end detector circuit Release lever switch Detecting signal Leaf switch...
  • Page 35 CHAPTER 3 ADJUSTMENTS This printer has undergone various adjustments so that it will attain a given standard of performance. In this chapter, a brief explanation is given of the methods for making adjustments. Follow the instructions when performing maintenance inspections or when replacing parts to correct malfunctions.
  • Page 37 ADJUSTMENTS Adjustment of Gap Between Print Head and Platen Remove the Printer cover and ribbon holder [1]. Loosen nut [3] using jig [2]. Adjust the head gap at the specified left and right positions (two places). * Adjust by moving jig [5] forward or backward. * Use bushing [4] to adjust the gap on the left side until it equals that on the right side.
  • Page 38 Set the tension gauge [3] to the position indicated in Fig. 3-5 below. Using a regular screwdriver, move tension lever [4] to the right until it matches the minimum tension setting (23.0 if LC-4511; 28.0 if LC-4521). Tighten screw [1].
  • Page 39 ADJUSTMENTS Adjustment of Paper end detector After replacing the paper-end detector, adjust the new detector as described here. First enter the dedicated command, then flow chart below. Dedicated command: <ESC> <SUB> (50)H n Automatic Sheet Feeder ; n=01 Tractor and Friction ;...
  • Page 40 ADJUSTMENTS Paper in? Enter paper-in value (B) Find average (center value) of (A) and (B) Nomal range? Print the new Paper end Adjustment error / New value detector A/D value not recorded (3 beeps) ** PAPER END SENSOR : Register the new Paper end detector A/D value (1 beep) Fanfold paper: From feed Cut-sheet paper: Eject paper...
  • Page 41 CHAPTER 4 PARTS REPLACEMENT This chapter explains disassembly and reassembly of the printer. Note the following regarding disassembly and reassembly. Disconnect the printer from the wall outlet before servicing it. Assy is the reverse of disassembly unless otherwise specified. After reassembly, coat the screw heads with locking sealant. Lubrication information is not provided in this chapter.

  • Page 43: Push Tractor Unit

    PARTS REPLACEMENT Push Tractor Unit Turn OFF the power switch. Remove the power cord from the AC output socket. Remove • Printer cover • Rear cover unit [1] • Push tractor unit [2] Set the release lever [3] to FRICTION. Lift the hook [4] at each side of the push tractor.

  • Page 44: Printer Machanism

    PARTS REPLACEMENT Printer Machanism Remove • Upper case unit as described above 2. Move the carriage unit to the left. Remove • Cable holder [1] • Two head cable [2] • Six screws [3] • Two screws [4] • Printer mechanism [5] Remove the connectors from the main logic board.

  • Page 45: Power Supply Unit

    PARTS REPLACEMENT Power Supply Unit Remove • Upper case unit as described above 2. • Three screws [1] • Screw [2] • Power supply unit [3] Fuse Remove • Upper case unit as described above 2. Inspect • Fuse F1 Defective →...

  • Page 46: Print Head

    PARTS REPLACEMENT Print Head Remove • Top guide unit [1] • Colour ribbon holder assy [2] • Cable holder [3] • Ribbon holder [4] • Two screws [5] • Print head [6] WARNING The print head gets hot after printing. Do not touch it until it cools.

  • Page 47: Carriage Motor Unit

    PARTS REPLACEMENT Carriage Motor Unit Remove • Printer mechanism as descrbed above 3. Loosen the screw [1]. Remove • Two screws [2] • Carriage motor unit [3] Adjust For details about belt-tension adjustment, refer to section 2 of Chapter 3. Platen Unit Remove •...

  • Page 48: Detector Unit

    PARTS REPLACEMENT 10. Detector Unit Remove • Platen unit as described above 9. Turn over the printer mechanism. Remove • Paper chute unit [1] Remove the nine paper sheet hooks [3] on the bottom of the frame base assembly [2] and remove the Paper chute unit [1].
  • Page 49 CHAPTER 5 MAINTENANCE AND LUBRICATION Maintenance......................47 1-1. Cleaning ........................ 1-2. Checks ........................Lubrication ......................48 2-1. Lubricant ....................... 2-2. Lubricating Method ....................2-3. Lubricated Areas ....................

  • Page 51: Maintenance And Lubrication

    MAINTENANCE AND LUBRICATION Maintenance In order to maintain the optimum performance of this printer and to prevent trouble, maintenance must be carried out according to the following items. 1-1. Cleaning Removal of dirt Wipe off dirt with a soft cloth soaked in alcohol or benzine. Note: Do not use thinner, trichlene or ketone solvents because they may damage plastic parts.

  • Page 52: Lubrication

    MAINTENANCE AND LUBRICATION Lubrication Lubrication is very important to maintain optimum performance and to prevent trouble. 2-1. Lubricant The type of lubricant greatly affects the performance and durability of the printer, especially in a low temperature environment. We recommend use of the grease and lubrication oils listed below for this printer Type of oil Product name Maker...
  • Page 53 MAINTENANCE AND LUBRICATION Fig. 5-1 Lubricated Areas (printer mechanism) – 49 –...
  • Page 54 MAINTENANCE AND LUBRICATION Fig. 5-2 Lubricated Areas (Frame R unit) Fig. 5-3 Lubricated Areas (push tractor unit) – 50 –...
  • Page 55 MAINTENANCE AND LUBRICATION (LC-4511) (LC-4521) (Shift cum) (Back side of gear cover) Fig. 5-4 Lubricated Areas (Carriage unit) – 51 –...
  • Page 56 MAINTENANCE AND LUBRICATION Fig. 5-5 Lubricated Areas (Pull tractor unit) Fig. 5-6 Lubricated Areas (ASF) – 52 –...
  • Page 57 CHAPTER 6 TROUBLESHOOTING Troubleshooting Procedures ................55 Unit Replacement Priority Chart ................ 56 Repair by Unit Replacement................57 Repair by Parts Replacement ................63 4-1. Does not Operate at All with Power on............... 4-2. Power Supply Circuit Abnormal ................4-3. Defective Motor Operation ................... 4-4.

  • Page 59: Troubleshooting

    TROUBLESHOOTING Troubleshooting Procedures Troubleshooting is never easy because various problems arise depending upon the particular location of the breakdown. The following procedures should be taken in making repairs. The first method is to make repairs through unit replacements. The two display codes appearing in the flow chart are defined as follows: 1) indicates main logic board replacement;...

  • Page 60: Unit Replacement Priority Chart

    TROUBLESHOOTING Unit Replacement Priority Chart Unit Exchange Sequence Problem Category Remarks Power Main Printer Control Details supply unit logic board mechanism panel board Specific display lamp only will not glow Specific switch only cannot be input Buzzer does not sound (sound volume inadequate) Strange sounds...

  • Page 61: Repair By Unit Replacement

    TROUBLESHOOTING Repair by Unit Replacement START * Turn power off. * Remove I/F cable. * Mount ink ribbon. * Set paper. * Move carriage to center. Turn power on. Carriage Moves? Carriage operates normally? *1 See (8) and (9) waveform in item 7 of Chapter 7.
  • Page 62 TROUBLESHOOTING On line lamp light? On line lamp signal is normal? Replace main logic board. Press on line switch to take off line. Replace control panel board. On line lamp is out? Press paper feed switch. Paper feed switch *2 See (10),(11) and (12),(13)wave- operation is normal? form in item 7 of Chapter 7.
  • Page 63 TROUBLESHOOTING Printing operation *3 See (4),(5) and (6),(7) wave- is normal? form in item 7 of Chapter 7. Print head drive signal waveform is normal? *3 1) Replace main logic board. 2) Replace printer mechanism. Replace printer mechanism. Paper feed *2 See (10),(11) and (12),(13) wave- operation is form in item 7 of Chapter 7.
  • Page 64 Remove connector CN11 from main logic board Turn power on. *4 Power Supply Unit LC-4511 +33V Line +33V ± 5% Between Pin 4 and Pin 5 of CN1 LC-4521 +40V Line +40V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN1...
  • Page 65 1) Replace main logic board. 2) Replace printer mechanism. 3) Replace control panel board. *4 Power Supply Unit LC-4511 +33V Line +33V ± 5% Between Pin 4 and Pin 5 of CN1 LC-4521 +40V Line +40V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN1 –...
  • Page 66 TROUBLESHOOTING *5 See (14) waveform in item 7 of Chapter 7. I/F signal is normal? *5 Ready condition? There is data transmission? Check hardware or host I/F mode set computer print program. up properly? 1) Replace I/F cable. 2) I/F cartridge 3) Replace main logic board.

  • Page 67: Repair By Parts Replacement

    *2 See (2) waveform in item 7 of Chapter 7. *3 See (1) waveform in item 7 of Chapter 7. *1 Power Supply Unit LC-4511 +33V Line +33V ± 5% Between Pin 4 and Pin 5 of CN1 LC-4521 +40V Line +40V ± 5% +5V Line +5V ±...

  • Page 68: Power Supply Circuit Abnormal

    Replace 1) Power supply unit The no load voltages are below; LC-4511 +33V Line +33V ± 5% Between Pin 4 and Pin 5 of CN1 LC-4521 +40V Line +40V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN1 Check the 5V line of the main logic board.

  • Page 69: Defective Motor Operation

    TROUBLESHOOTING 4-3. Defective Motor Operation Paper Feed Motor Carriage Motor START START CR-ø1, LF-CMN ø2, ø3, ø4 are signal is normal? normal? *6 Check and replace 1) TA7 Check and replace 2) TR19 1) TA 8 3) Gate array 2) Gate array LF-ø1, ø2, ø3, ø4 are Replace...

  • Page 70: Defective Print Head Operation

    TROUBLESHOOTING 4-4. Defective Print Head Operation START Does not print at all? A specific pin does not +33/40V line work? Check and replace is supplied? • TA1 (HD1, 2, 3, 4) • TA2 (HD5, 6, 7, 8) • TA3 (HD9, 10, 11, 12) •...

  • Page 71: Defective Interface Operation

    TROUBLESHOOTING 4-5. Defective Interface Operation START Press on line switch to take on line. Send print program from host computer. *8 See (14) waveform in item 7 of Chapter 7. Is I/F signal normal? *8 Incorrect print generated? Check I/F cable. Check and replace 1) IC 7 2) Gate array...
  • Page 73 5-4-2. Component Layout ......103 5-4-3. Parts List ..........103 3. Sub - Assembly ............74 5-5. Power Supply Unit (LC-4511,LC-4521) ..104 3-1. Push Tractor Unit ..........74 5-5-1. Circuit Diagram ........104 3-2. Lower Cace Unit ..........75 5-5-2.

  • Page 74: Printer Assembly

    Printer Assembly 1-1. Disassembly Drawing – 70 –...

  • Page 75: Parts List

    1-2. Parts List Q'TY DRWG.NO. REV. PARTS NO. PARTS NAME REMARKS RANK 4511 4521 89429020 MECHANISM WITH HEAD DP605 89429040 MECHANISM WITH HEAD DP605H (D) 87817050 PUSH TRACTOR UNIT HA-15(D) 87816650 PRINTER COVER UNIT HA-15(D) 87816670 REAR COVER UNIT HA-15(D) 87816660 PAPER GUIDE UNIT HA-15(D)

  • Page 76: Printer Mechanism

    Printer Mechanism 2-1. Disassembly Drawing – 72 –...

  • Page 77: Parts List

    2-2. Parts List Q'TY DRWG.NO. REV. PARTS NO. PARTS NAME REMARKS RANK 4511 4521 89162040 PRINT HEAD DP6005 89162020 PRINT HEAD DP6005H 89162021 PRINT HEAD DP6005H 86428010 BOTTOM GUIDE UNIT 86427050 TENSION LEVER UNIT 86427040 TENSION LEVER UNIT 505H 86426150 STACK GUIDE UNIT 86426151 STACK GUIDE UNIT...

  • Page 78: Sub - Assembly

    Sub - Assembly 3-1. Push Tractor Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86036360 TRACTOR L ASSY 86036350 TRACTOR R ASSY SHEET GUIDE 83904372 RELEASE ARM 83401361 RELEASE LEVER 83101700 GEAR 38X0.5 83101690 TRACTOR GEAR 83000201 TRACTOR FRAME L 83000202 TRACTOR FRAME L 83000190...

  • Page 79: Lower Cace Unit

    3-2. Lower Cace Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 83026190 LOWER CASE HA-15 LOWER CASE CHASSIS C HA-15 LOWER CASE CHASSIS B HA-15 LOWER CASE CHASSIS A HA-15 RUBBER FOOT 15X15 QBS-10 00930803 SCREW TAT 3-8 PT 80995280 SHEET 5 HA-15...

  • Page 80: Upper Case Unit

    3-3. Upper Case Unit Q'TY DRWG.NO. REV. PARTS NO. PARTS NAME REMARKS RANK 4511 4521 83026180 UPPER CASE HA-15 80088100 OPERATION SHEET HBA-15 80088110 OPERATION SHEET HBA-15H 80060320 BRAND PLATE HBA-15 80060330 BRAND PLATE HBA-15H – 76 –...

  • Page 81: Paper Chute Unit

    3-4. Paper Chute Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86424370 DETECTOR UNIT A 86424361 ROLLER HOLDER ASSY 6-2-1 83904403 ROLLER HOLDER INCLUDER DRWG.NO.6-2 6-2-2 83201071 PINCH ROLLER INCLUDER DRWG.NO.6-2 83201072 PINCH ROLLER INCLUDER DRWG.NO.6-2 6-2-3 80521111 SPRING C087-090-0172 INCLUDER DRWG.NO.6-2 83912362...

  • Page 82: Platen Unit

    3-5. Platen Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 83904412 PLATEN HOLDER 83401311 ASF CLUTCH LEVER 83101820 PLATEN GEAR 83101750 CLUTCH IDLER GEAR B 82210191 WAVE WASHER 80202291 PLATEN 04020018 STOP RING SE8.0 04012503 ROLL PIN SP2.5X14 02210001 PLAIN WASHER WF10X18X1.6 –...

  • Page 83: Carriage Unit (Lc-4511)

    3-6. Carriage Unit (LC-4511) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86422610 CARRIAGE ASSY 86422611 CARRIAGE ASSY 86422580 GEAR COVER ASSY 9-2-1 HEAD GROUND SPRING INCLUDED DRWG.NO.9-2 86422400 RIBBON CASSETTE GEAR ASSY 771 86032411 GEAR A ASSY 86032400...

  • Page 84: Carriage Unit (Lc-4521)

    3-7. Carriage Unit (LC-4521) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86422600 RIBBON HOUSING ASSY 505H 86422601 RIBBON HOUSING ASSY 505H 84900111 CARRIAGE 505H 86422580 GEAR COVER ASSY 9-3-1 HEAD GROUND SPRING INCLUDED DRWG.NO.9-3 86422400 RIBBON CASSETTE GEAR ASSY 771 86032411 GEAR A ASSY 86032400...

  • Page 85: Frame L Unit

    3-8. Frame L Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 11-1 86424380 DETECTOR UNIT B 11-2 FRAME L 11-3 00926803 SCREW TAT 2.6-8 PT – 81 –...

  • Page 86: Frame R Unit

    3-9. Frame R Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 12-1 86420570 PAPER FEED MOTOR ASSY 12-2 83101760 PF IDLER GEAR 12-3 FRAME R 12-4 00930603 SCREW TAT 3-6 PT – 82 –...

  • Page 87: Serial If Unit (Option)

    3-10. Serial IF Unit (Option) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 20-1 87590120 IF BOARD UNIT IS-8H192 20-2 INTERFACE COVER HA-15 20-3 INTERFACE CHASSIS IS-8H 20-4 SCREW TAT 3-5 CT 20-5 SCREW TR 3-8 – 83 –...

  • Page 88: Pull Tractor Unit (Option)

    3-11.Pull Tractor Unit (Option) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 21-1 86592110 TRACTOR SHAFT UNIT PT-15HA 21-1-1 83101690 TRACTOR GEAR INCLUDED DRWGN0.21-1 21-2 86036360 TRACTOR L ASSY 21-3 86036350 TRACTOR R ASSY 21-4 SHEET GUIDE 21-5 83401380 TRACTOR LOCK LEVER L PT-15HA 21-6...

  • Page 89: Asf (Option)

    3-12. ASF (Option) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 22-1 86594020 ADJUSTER ASSY L SF-15HA 22-2 86594010 ADJUSTER ASSY R SF-15HA 22-3 TRACTOR STAY ASSY SF-15HA 22-4 86426660 FEED ROLLER COLLAR L ASSY 505 22-5 86426650 FEED ROLLER COLLAR R ASSY 505 22-6 86426330 ASF STOPPER ASSY...

  • Page 90: Serial-Parallel Converter (Option)

    3-13. Serial-Parallel Converter (Option) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 23-1 UPPER CASE SPC-8K 23-2 CPU BOARD UNIT SPC-8K 23-3 87590020 IF BOARD UNIT SPC-8K 23-4 LOWER CASE UNIT SPC-8K 23-5 CORD HOLDER SPC-8K 23-6 SCREW TAT 3-12 PT-FL 23-7 SCREW TAT 3-8 PT-FL 23-8...
  • Page 91 [Blank Page]...

  • Page 92: Wiring Scheme Of Printer

    Wiring Scheme of Printer LC-4511 , LC-4521 – 88 –...
  • Page 93 – 89 –...

  • Page 94: Electrical Parts

    Electrical Parts 5-1. Main Logic Board (LC-4511) 5-1-1. Circuit Diagram – 90 –...
  • Page 95 – 91 –...

  • Page 96: Component Layout

    5-1-2. Component Layout – 92 –...

  • Page 97: Parts List

    5-1-3. Parts List Main Logic Board (LC-4511) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 08240082 GATE ARRAY BU12308-H24W1 08223280 MASKED ROM 1.0 HBA-15 08223281 MASKED ROM 2.0 HBA-15 09110077 IC SOCKET ICS-32-2T 08222017 EPROM D27C1001D-150NS HBA15 *.* 09110077...
  • Page 98 Main Logic Board (LC-4511) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK CERA. CAPA. 0.022UF 50V C31-32 CERA. CAPA. 22PF CERA. CAPA. 0.022UF 50V CHEM. CAPA. 47UF CHEM. CAPA. 100UF CHEM. CAPA. 10UF C37-38 CERA. CAPA. 1000PF C39-40 CERA. CAPA.
  • Page 99 Main Logic Board (LC-4511) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK R120 RD RESISTOR 100 OHM 1/6W R121 RD RESISTOR 390 OHM 1/6W R122 RD RESISTOR 220 OHM 1/6W R123 RD RESISTOR 10 K-OHM 1/6W R124-127 RD RESISTOR 2.2 K-OHM 1/6W R128 RD RESISTOR 4.7 K-OHM 1/6W...

  • Page 100: Main Logic Board (Lc-4521)

    5-2. Main Logic Board (LC-4521) 5-2-1. Circuit Diagram – 96 –...
  • Page 101 – 97 –...

  • Page 102: Component Layout

    5-2-2. Component Layout – 98 –...

  • Page 103: Parts List

    5-2-3. Parts List Main Logic Board (LC-4521) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 08240082 GATE ARRAY BU12308-H24W1 08223280 MASKED ROM 1.0 HBA-15 08223281 MASKED ROM 2.0 HBA-15 09110077 IC SOCKET ICS-32-2T 08222017 EPROM D27C1001D-150NS HBA 15H *.* 09110077 IC SOCKET ICS-32-2T NOT MOUNTED...
  • Page 104 Main Logic Board (LC-4521) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK CERA. CAPA. 0.022UF 50V C31-32 CERA. CAPA. 22PF CERA. CAPA. 0.022UF 50V CHEM. CAPA. 47UF CHEM. CAPA. 1000UF CHEM. CAPA. 10UF C37-38 CERA. CAPA. 4700PF C39-40 CERA. CAPA. 470PF CERA.
  • Page 105 Main Logic Board (LC-4521) DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK R122 RD RESISTOR 220 OHM 1/6W R123 RD RESISTOR 10 K-OHM 1/6W R124-127 RD RESISTOR 2.2 K-OHM 1/6W R128 RD RESISTOR 4.7 K-OHM 1/6W R129 RD RESISTOR 33 K-OHM 1/6W R130 RD RESISTOR 220 OHM 1/6W R131-132...

  • Page 106: Control Panel Board

    5-3. Control Panel Board 5-3-1. Circuit Diagram 5-3-2. Component Layout 5-3-3. Parts List DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK SW1-OLSW 09010041 PUSH SWITCH SKHHAL LED1-3 NOT MOUNTED LED4-11 08300151 LED LTL232 08300168 LED GL3EG8 LED12-16 NOT MOUNTED LED17-P 08300151 LED LTL232...

  • Page 107: Connected Board

    5-4. Connected Board 5-4-1. Circuit Diagram 5-4-2. Component Layout 5-4-3. Parts List DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 08300142 PHOTO-INTERRUPTER GP1S58VT – 103 –...

  • Page 108: Power Supply Unit (Lc-4511,Lc-4521)

    5-5. Power Supply Unit 5-5-1. Circuit Diagram – 104 –...

  • Page 109: Component Layout

    5-5-2. Component Layout – 105 –...

  • Page 110: Parts List

    5-5-3. Parts List Power Supply Unit Q'TY DRWG.NO. REV. PARTS NO. PARTS NAME REMARKS RANK 4511 4521 BEADS INDUCTOR B-01AT BEADS INDUCTOR RH35047AT-Y7 B2-3 BEADS INDUCTOR B01-RT BEADS INDUCTOR RH35047RT-Y7 BEADS INDUCTOR B-01AT BEADS INDUCTOR RH35047AT-Y7 FILM CAPA. 0.22UF 250V C2-3 NOT MOUNTED C4-5...
  • Page 111 Power Supply Unit Q'TY DRWG.NO. REV. PARTS NO. PARTS NAME REMARKS RANK 4511 4521 R2-3 RN RESISTOR 56 K-OHM 2W EXCEPT FOR US RN RESISTOR 30 K-OHM 2W FOR US RN RESISTOR 62 K-OHM 3W RN RESISTOR 100 OHM 3W RN RESISTOR 0.15 OHM 2W RD RESISTOR 100 OHM 1/4W RD RESISTOR...

  • Page 112: Serial Interface Board Is-8H192 (Option)

    5-6. Serial Interface Board IS-8H192 (Option) 5-6-1. Circuit Diagram – 108 –...

  • Page 113: Component Layout

    5-6-2. Component Layout 5-6-3. Parts List DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 08250011 MASKED CPU HD63B01YF-IF 08200157 IC-I/F ADM232LJR*SOL16 08221021 SRAM HM6264LFP-100NS 08240083 GATE ARRAY LZ95300-ISH C1-2 CERA. CAPA. CHIP 0.1UF 50V C3-4 CERA. CAPA. CHIP 1000PF 50V CERA.

  • Page 114: Serial - Parallel Converter Board ( Option )

    Serial - Parallel Converter Board ( Option ) 6-1. Wiring Scheme – 110 –...

  • Page 115: I/F Board

    6-2. I/F Board 6-2-1. Circuit diagram 6-2-2. Component Layout 6-2-3. Parts List DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK IC101 08200125 IC-I/F LT1081CN IC102 08200109 IC-RESET M51953BL R101 RD RESISTOR 3.3 K-OHM 1/6W C101-104 CHEM. CAPA. 4.7UF C105 CAPACITOR 0.1UF 50V CN101 09100461...

  • Page 116: Cpu Board

    6-3. CPU Board 6-3-1. Circuit diagram – 112 –...

  • Page 117: Component Layout

    6-3-2. Component Layout 6-3-3. Parts List DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 08250011 MASKED CPU HD63B01YF-IF 08221021 SRAM HM6264LFP-100NS 07603007 DIGITAL TRANSISTOR RTIN434C-T CHIP RESISTOR 4.7 K-OHM 1/10W TR2-4 06751021 CHIP RESISTOR 1 K-OHM 1/10W 06754721 CHIP RESISTOR 4.7 K-OHM 1/10W TR6-7 06783313 CHIP RESISTOR 330 OHM 1/8W...

  • Page 118: Waveform With Oscilloscope

    Time/Div : 0.2 µs Lower : RESET output Pin 3 of IC8 Volt/Div : 1V Time/Div : 10 ms Volt/Div : 2V (3) Protection Circuit (4) Head Energizing Control Signal (LC-4511) (4V) (4V) (0V) (0V) (4V) (4V) (0V) (0V) Upper : RESET...
  • Page 119 Volt/Div : Upper 5V Volt/Div : Upper 5V Lower 20V Lower 50V (9) Carrige Motor Control Signal and Driving Signal (10) Paper Feed Motor Common Control Signal and (LC-4521) Driving Signal (LC-4511) (4V) (5V) (0V) (0V) (30V) (50V) (0V) (0V) Upper : Carriage-ø1 Control Signal Pin 117 of IC1...
  • Page 120 (13) Paper Feed Motor Control Signal and Driving (14) Parallel Interface (parallel type Only) Signal (LC-4521) (5V) (0V) (5V) (0V) (60V) (4V) (0V) (0V) Upper : LF-ø1 Control Signal Pin 13 of IC6 Upper : STB Pin 1 of CN1 Lower : LF-ø1 Driving Signal Pin 3 of CN7 Lower : BUSY Pin 11 of CN1...
  • Page 122 HEAD QUARTERS OVERSEAS SUBSIDIARY COMPANIES STAR MICRONICS U.K.LTD. STAR MICRONICS CO., LTD. JAPAN STAR MICRONICS AMERICA INC. Star House, Peregrine Business Park, Gomm Road, High Wycombe 536 Nanatsushinya, Shimizu, 70-D Ethel Road West. Bucks, HP13 7DL U.K. Shizuoka, 424, Japan Piscataway, NJ 08854-5950, U.S.A...

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Lc-4521

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