Star Micronics NX-1500 Technical Manual
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Star Micronics NX-1500 Technical Manual

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DOT MATRIX PRINTER
NX-1500
LC-15
TECHNICAL MANUAL
[ FIFTH EDITION ]

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Summary of Contents for Star Micronics NX-1500

  • Page 1 DOT MATRIX PRINTER NX-1500 LC-15 TECHNICAL MANUAL [ FIFTH 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: General Specifications

    It is intended for use as a reference for periodic inspections and maintenance procedures. This manual is prepared for use at a technical level and not for the general user. Model Destination NX-1500 MULTI-FONT For American and Asian market LC-15 MULTI-FONT For European and Pacific market •...

  • Page 5: Table Of Contents

    CHAPTER 1 GENERAL SPECIFICATIONS General Specifications ..................External Appearance and Composition .............. DIP Switch Settings ....................Parallel Interface ....................4-1. General Specifications ................... 7 4-2. Connector Signals ....................7 Serial Interface (option) ..................5-1. General Specifications ................... 8 5-2. Connector Signals ....................8 5-3.
  • Page 6 GENERAL SPECIFICATIONS – 2 –...

  • Page 7: General Specifications

    Paper feed speed 2.8 inches/second max. Character set ASCII Code table (International) 3 sets *1 (For NX-1500 SU, LC-15 SU)/14 sets *2 (Others) IBM special IBM block graphic Download *1 IBM-Russian, Gost, Code page #866 *2 USA, France, Germany, England, Denmark I, Sweden, Italy, Spain I, Japan, Norway, Denmark II, Spain II, Latin America,...
  • Page 8 GENERAL SPECIFICATIONS Maximum buffer size Without Download 15KB With Download 1 line Emulations Epson mode IBM proprinter mode Interface Standard: Centronics parallel Option: RS-232C serial Ribbon type On-carriage, dedicated Black Ribbon life 3 million characters (draft pica) 590(w) × 332(d) × 127(h)mm Dimensions 23.2(w) ×...

  • Page 9: External Appearance And Composition

    GENERAL SPECIFICATIONS External Appearance and Composition Fig. 1-2 Front View of the Printer Fig. 1-3 Diagram of Internal Composition – 5 –...

  • Page 10: Dip Switch Settings

    GENERAL SPECIFICATIONS DIP Switch Settings 3-1. For NX-1500 SU, LC-15 SU Switch Function Page length 11 inches 12 inches Auto CR Character Set Gost Other (See 2-4) Auto sheet feeder Inactive Active Paper-out detector Enabled Disabled Emulation mode Standard Character set...

  • Page 11: Parallel Interface

    GENERAL SPECIFICATIONS Parallel Interface 4-1. General Specifications Item Specifications Synchronization System Via externally supplied STROBE pulses I/F Protocol By ACK and BUSY signals Logic Level Compatible with TTL level Fig. 1-4 Timing Charts of Parallel Interface 4-2. Connector Signals Pin No Signal Name Function Description Goes from high to low (for ≥...

  • Page 12: Serial Interface (Option)

    GENERAL SPECIFICATIONS Serial Interface (option) 5-1. General Specifications Item Specifications Interface RS-232C level Synchronization System Asynchronous Baud rate 150-19,200 bit per second (BPS) [selectable] 150, 300, 600, 1200, 2400, 4800, 9600, 19200BPS Word length Start bit: 1 bit Data bit: 7 or 8 bits (selectable) Parity bit: Odd, Even or None (selectable)

  • Page 13: Dip Switch Settings

    GENERAL SPECIFICATIONS 5-3. DIP Switch Settings Switch 8 data bits 7 data bits No parity Parity checked Handshaking protocols — see table below Odd parity Even parity Data transfer rate — see table below All switches are set ON when the printer leaves the factory. Protocol Switch 3 Switch 4...
  • Page 14 GENERAL SPECIFICATIONS – 10 –...
  • Page 15 CHAPTER 2 THEORY OF OPERATION Block Diagram ..................... Main Logic Board ....................2-1. Data Input Operation ..................... 14 2-1-1. Parallel Interface ....................14 2-1-2. Serial Interface ....................15 2-2. General Flow Chart ....................18 2-2-1. Editing ....................... 19 2-2-2. Print Head Driving Circuit ................19 2-2-3.

  • Page 16: Theory Of Operation

    THEORY OF OPERATION – 12 –...

  • Page 17: Block Diagram

    THEORY OF OPERATION Block Diagram The block diagram of this printer is shown in Fig. 2-1. Fig. 2-1 Block Diagram Main Logic Board This board receives data from the host computer and stores it in the RAM in the order of arrival. The CPU on this board reads the data from the RAM, and edits it according to the program stored in the ROM.

  • Page 18: Main Logic Board

    THEORY OF OPERATION Main Logic Board 2-1. Data Input Operation 2-1-1. Parallel Interface Communications between the host computer and this printer are facilitated via parallel connectors. This section explains the handshake of this interface. The data input circuit of this interface is shown in Fig. 2-2. Fig.

  • Page 19: Serial Interface

    THEORY OF OPERATION Fig. 2-3 Timing Chart of Parallel Interface 2-1-2. Serial Interface (option) When the serial interface is used, an optional Serial Interface Board is required to be installed. The board will change the voltage level (RS-232C <-------> TTL) and the data transfer method (Serial <-------> parallel). Fig.
  • Page 20 THEORY OF OPERATION IC4 is a dual RS-232C driver/receiver which includes a capacitive voltage generator to supply RS-232C voltage levels from a single 5V supply. Data from the host computer is sent from RXD via IC4 and is input to the MPU. Serial data input to the MPU is converted into parallel data, and output to the main logic board.
  • Page 21 THEORY OF OPERATION DTR method XON/XOFF method ETX/ACK method Fig. 2-6 Data Input Timing Chart with Serial Interface – 17 –...

  • Page 22: General Flow Chart

    THEORY OF OPERATION 2-2. General Flow Chart A general flow chart of editing and printing operations is shown in Fig. 2-7. Fig. 2-7 General Flow Chart of Editing and Printing – 18 –...

  • Page 23: Editing

    THEORY OF OPERATION 2-2-1. Editing Data stored in the RAM is read out sequentially by the CPU and then edited according to a function code that has been specified in advance. This editing takes places until the CR or CR + LF code appears or the line buffer becomes full. 2-2-2.

  • Page 24: Carriage Motor Driving Circuit

    THEORY OF OPERATION Fig. 2-9 Print Head Temperature Detection Circuit 2-2-4. Carriage Motor Driving Circuit This printer employs a stepping motor as the carriage motor. Unlike regular motors on the market, this stepping motor will not operate just by connecting it to a power source. The motor operates only when a drive pulse is fed to it, but even then, it turns only a certain angle.

  • Page 25: Carriage Motor Speed Control

    THEORY OF OPERATION 2-2-5. Carriage Motor Speed Control Since the carriage motor is a stepping motor, the carriage can be stopped at a desired position by controlling acceleration and deceleration. The carriage can also move backward. The rotational speed of the carriage motor is set by the number of pulses per time unit. The character pitch (horizontal character size) in each print mode is determined by changing this rotational speed (or carriage transfer speed).
  • Page 26 THEORY OF OPERATION Fig. 2-13 Paper Feed Motor Driving Signals The utilization of voltage applied to the paper feed motor is described as follows. Mode Voltage Application Operation VH (+25.5V) Motor Drive Standby: VL (+5V) Holding Bias Voltage to the paper feed motor is changed by setting CPU port P31 to LOW or HIGH and by turning transistor TR6 and transistor array TA1 ON or OFF.

  • Page 27: Reset Circuit

    THEORY OF OPERATION 2-3. Reset Circuit The RESET signal initializes the circuit elements and prevents operation errors when the power is turned on. The RESET signal is output for approx. 34ms. when the power is turned on, or while the RESET ( INPUT-PRIME ) signal is being output from the host computer.

  • Page 28: Reset By +5V Line Voltage Detection

    THEORY OF OPERATION 2-4. Reset by +5V Line Voltage Detection A voltage-detecting IC (IC2 in Fig. 2-14) detects momentary drops in voltage or unstable voltage supply (due to power failures, etc.) on the +5V line. If the voltage on the +5V line falls below 4.25V, the RESET signal appears at the output terminal of the voltage-detecting IC.

  • Page 29: Mechanisms

    THEORY OF OPERATION Mechanism 4-1. Print Head Mechanism The print head consists of 9 needle wires and 9 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 30: Ink Ribbon Feed Mechanism

    THEORY OF OPERATION Fig. 2-18 Print Head Carrying Mechanism 4-3. Ink Ribbon Feed Mechanism The ink ribbon feed mechanism is linked to the print head carrying mechanism described previously so that the ink ribbon is wound up automatically while the carriage moves left or right. The ribbon feed mechanism is driven by torque from the carriage motor, and carriage movement allows the idler gear to rotate.

  • Page 31: Paper Feed Mechanism

    THEORY OF OPERATION 4-4. Paper Feed Mechanism The paper feed motor is a PM (Permanent Magnet) type, four-phase and 48-pole pulse motor. Minimum paper feed is set at 1/432 inch. There are two ways of feeding paper available with this printer: Friction method and Tractor method. You can select one of the two methods, using the release lever.

  • Page 32: Detectors

    THEORY OF OPERATION 4-5. Detectors Home Position Detector A photo-interrupter is used in the home position detector, which is set at the left side of the frame unit. ON/OFF signals are generated according to the position of the shield plate mounted at the base of the carriage, and the printing position is determined by these signals.
  • Page 33 CHAPTER 3 ADJUSTMENTS This printer has undergone various adjustments so that it will achieve standard performance. In this chapter, a brief explanation is given of the methods of adjustments. Please check this explanation when making maintenance inspections or when replacing parts to correct malfunctions.
  • Page 34 ADJUSTMENTS – 30 –...
  • Page 35 ADJUSTMENTS Gap Adjustment Between Print Head and Platen 1-1. Measuring Gap Between Print Head and Platen Remove the upper case unit according to procedures described in Chapter 4. Set the adjustment lever [1] at step two. Remove the ribbon guide [2]. Insert a thickness gauge [3] between the print head [4] and the platen [5], and measure the gap.
  • Page 36 ADJUSTMENTS Adjustment of Timing at Belt Tension The timing belt tension should be set at from 18g to 21g. (The belt tension must be measured with the designated tension gauge [1] .) After the belt has been used for a long time, however, it may be difficult to maintain prescribed tension because of belt deterioration or wear.
  • Page 37 ADJUSTMENTS Adjustment of Home Position Detector Remove the printer cover. Loosen the screw [1]. Set the projection [3] of the home position detector [2] between the two lines stamped. Tighten the screw [1]. Fig. 3-7 Adjustment of Home Position Detector –...
  • Page 38 ADJUSTMENTS – 34 –...
  • Page 39 CHAPTER 4 PARTS REPLACEMENT This chapter explains disassembly and reassembly of the printer. Note the following precautions during disassembly and reassembly. Disconnect the printer from the wall outlet before servicing it. Assembly is the reverse of disassembly unless otherwise specified. After reassembly, coat the screw heads with locking sealant.
  • Page 40 PARTS REPLACEMENT – 36 –...

  • Page 41: Parts Replacement

    PARTS REPLACEMENT Upper Case Unit Turn off the power switch [1] Remove • Printer cover • Rear cover • Platen knob [2] • ROM cover [3] • Five tapping screws [4] Move the carriage unit [5] over the right so that it aligns with the cut-out of the upper case unit [6] .

  • Page 42: Printer Mechanism

    PARTS REPLACEMENT Printer Mechanism Remove • Upper case unit according to the procedure de- scribed in item 1. • Five tapping screws [1] • Screw [2] • Cable holder [3] Lift up the tab of the cable holder, and slide it to the left for removal.

  • Page 43: Fuse Board Unit

    PARTS REPLACEMENT Fuse Board Unit Remove • Upper case unit according to the procedure de- scribed in item 1. • Connector [1] • Two tapping screws [2] • Tapping screw [3] (Except for HK) • Tapping screw [4] • Power switch [5] •...

  • Page 44: Print Head

    PARTS REPLACEMENT Print Head Remove • Printer cover • Ink ribbon cartridge • Cable holder [1] • Two tapping screws [2] • Head cable [3] • Print head [4] WARNING: The print head become hot after print- ing so wait for it to cool before remov- ing it.

  • Page 45: Carriage Motor Unit

    PARTS REPLACEMENT Carriage Motor Unit Remove • Printer mechanism according to the procedure described in item 3. • Cord fastener binding the lead wires. • Connector [1] • Two screws [2] • Carriage motor unit [3] Adjust • Timing belt tension Refer to item 2 of Chapter 3.

  • Page 46: Platen Unit

    PARTS REPLACEMENT 11. Platen Unit Remove • Upper case unit according to the procedure de- scribed in item 1. Move the bail lever [1] forward. Remove • Two nuts [2] • Tractor stay [3] • Ground contact spring [4] • Platen holder R [5] •...
  • Page 47 CHAPTER 5 MAINTENANCE AND LUBRICATION Maintenance ......................1-1. Cleaning ......................... 45 1-2. Checks ........................45 Lubrication ......................2-1. Lubricant ........................ 46 2-2. Lubricating Method ....................46 2-3. Lubricated Areas ....................46...
  • Page 48 – 44 –...

  • Page 49: 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 50 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. Product name Maker FLOIL GB-TS-0...
  • Page 51 MAINTENANCE AND LUBRICATION Fig. 5-1 Lubricated Areas 1 – 47 –...
  • Page 52 MAINTENANCE AND LUBRICATION Fig. 5-2 Lubricated Areas 2 – 48 –...
  • Page 53 CHAPTER 6 TROUBLESHOOTING Troubleshooting Procedures ................Unit Replacement Flow Chart ................Repair by Unit Replacement ................Repair by Replacement of Parts ................ 4-1. Does not Operate at All with Power on ............... 59 4-2. Power Supply Circuit Abnormal ................60 4-3.
  • Page 54 – 50 –...

  • Page 55: Troubleshooting

    TROUBLESHOOTING Troubleshooting Procedures Troubleshooting is never easy because various problems arise depending upon the particular location of the breakdown, but the following procedures should be adhered to in making repairs. At the first stage, conduct repairs through unit replacements. The two display codes appearing in the flow chart are defined as follows: 1) indicates main logic board replacement and 2) indicates printer mechanism replacement, to be carried out if the problem has not been corrected.

  • Page 56: Unit Replacement Flow Chart

    TROUBLESHOOTING Unit Replacement Flow 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 57: 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 Movement? Carriage operates normally? Carriage motor operating waveform is normal? *1 1) Replace main logic board.
  • Page 58 TROUBLESHOOTING On line lamps light? On line lamp signal is normal? Replace main logic board. On line switch in on. (Take Off Line) Replace control panel board. On line lamp is out? Paper feed switch is on. Paper feed switch operation is normal? Paper feed motor drive waveform...
  • Page 59 TROUBLESHOOTING Printing operation is normal? Print head drive signal waveform is normal? *3 1) Replace main logic board. 2) Replace printer mechanism. Replace printer mechanism. Paper feed operation is normal? Paper feed motor drive waveform is normal? *2 1) Replace main logic board. Ribbon feed 2) Replace printer mechanism.
  • Page 60 TROUBLESHOOTING Printing begins? Printing operation normal? 1) Replace I/F cable. Printer is normal; host 2) Replace main logic board. computer print program stops. 3) Check host computer. Works with carriage hand? Replace printer mechanism. Output (VH, VL, +5V) of power supply unit is normal? *4 1) Replace main logic board.
  • Page 61 TROUBLESHOOTING Output of power supply unit is normal? *4 Power source is off. Replace power supply unit. Connect connector CN201 of main logic board. Power source is on. Fuse blows out? Replace fuse 1) Replace main logic board. 2) Replace printer mechanism. 3) Replace control panel board.
  • Page 62 TROUBLESHOOTING I/F signal is normal? *5 Ready condition? There is data transmission? Hardware check or check I/F mode set of host computer print up properly? program. 1) Replace I/F cable. 2) Replace main logic board. I/F mode set up changed. On line switch goes ON/OFF? On line lamp...

  • Page 63: Repair By Replacement Of Parts

    TROUBLESHOOTING Repair by Replacement of Parts 4-1. Does not Operate at All with Power on START VH, VL, +5V supplied? *4 See 4-2. Power Supply DC Power abnormal. Circuit Abnormal. RESET signal becomes HIGH? *6 Check RESET circuit; replace parts. Crystal waveform is normal? *7...

  • Page 64: Power Supply Circuit Abnormal

    TROUBLESHOOTING 4-2. Power Supply Circuit Abnormal Remove connectors CN201 of the main logic board. START Fuse F1 is blown? Replace Fuse F1 Fuse is blown again? Replace Transformer. ACS1 and ACS2 are supplied? Connect the The no load voltages are below: connector CN201.

  • Page 65: Defective Motor Operation

    TROUBLESHOOTING 4-3. Defective Motor Operation START START LF-CMN CR-CMN signal is normal? signal is normal? Check or replace Check or replace 1) TA1 1) TA1 2) TR6 2) TR5 or TR1 3) CPU 3) CPU LF-ø1, CR-ø1, ø2, ø3, ø4 are ø2, ø3, ø4 are normal? *2 normal? *1...

  • Page 66: Defective Print Head Operation

    TROUBLESHOOTING 4-4. Defective Print Head Operation START Does not print at all? A specific pin does not VH(+25.5V) work? line is supplied? Check or replace 1) TR8 ~ TR16 Power supply unit abnormal. (Refer to item 4-2.) Check or replace Print is light 1) TR1 as whole?

  • Page 67: Defective Interface Operation

    TROUBLESHOOTING 4-5. Defective Interface Operation START Set at on line Start print program of host computer. Is I/F signal normal? *5 Incorrect print generated? Check I/F cable. Check or replace 1) IC3 2) Gate array 3) CPU Check operation – 63 –...
  • Page 68 – 64 –...
  • Page 69 CHAPTER 7 PARTS LIST HOW TO USE PARTS LIST DRWG. NO. This column shows the drawing number of the illustration. REVISED EDITION MARK This column shows a revision number. Parts that have been added in the revised edition are indicated with “#”. Parts that have been abolished in the revised edition are indicated with “*”.

  • Page 70: Printer Assembly

    Printer Assembly DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 89064810 MECHANISM WITH HEAD DP935 82900772 RIBBON HOLDER TO SECTION 2-2 87291130 LOWER CASE UNIT NX-1500 EXCEPT FOR SC 87291150 LOWER CASE UNIT LC-15 SC FOR SC – 66 –...
  • Page 71 PARTS NAME Q'TY REMARKS RANK 87292150 MAIN LOGIC BOARD UNIT NX-1500 US,UK,AS,TW,LA 87292160 MAIN LOGIC BD UNIT NX-1500 HK FOR HK 87292170 MAIN LOGIC BD UNIT LC-15 EC FOR EC,SC 87292170 MAIN LOGIC BD UNIT LC-15 EC FOR SU 87295900...
  • Page 72 DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 01914031 SCREW TAT 4-12 PT-FL 01914030 SCREW TAT 4-15 PT 87299160 PULL TRACTOR UNIT PT-15XJ FOR US,LA :OPTION 87299190 PULL TRACTOR UNIT PT-15XJ EXC.FOR US,LA:OPTION 89590183 ASF SF-15DJ FOR US,LA :OPTION 89590181 ASF SF-15DJ FOR EC...

  • Page 73: Printer Mechanism

    Printer Mechanism 2-1. Disassembly Drawing – 69 –...

  • Page 74: Parts List

    2-2. Parts List Printer Mechanism DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 89131010 PRINT HEAD DP9305 87060130 FRAME UNIT 87060131 FRAME UNIT NOTE1 87061110 CARRIAGE MOTOR UNIT 87067170 BAIL ROLLER SHAFT UNIT 83400650 BAIL LEVER L 83400470 RELEASE LEVER 83400471 RELEASE LEVER 83400670...

  • Page 75: Sub-Assembly

    3-1. Upper Case Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 80086550 OPERATION SHEET SPECIAL LC-15 FOR SU 80087200 OPERATION SHEET NX-1500 SU FOR SU 80086220 OPERATION SHEET NX-1500 EXCEPT FOR SU 80081910 BRAND SEAL NX-1500 FOR NX-1500 80081911 BRAND SEAL...

  • Page 76: Lower Case Unit

    3-2. Lower Case Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 83023410 LOWER CASE NX-1500 83023411 LOWER CASE NX-1500 83023413 LOWER CASE NX-1500 82010900 BOARD CHASSIS NX-1500 82010910 POWER CHASSIS NX-1500 82501050 GROUND SPRING NX-1500 82901390 GROUND BRACKET...

  • Page 77: Interface Cartridge Unit

    83023450 INTERFACE COVER NX-1500 83024920 INTERFACE COVER ZB-15 83024921 INTERFACE COVER ZB-15 16-2 87297030 PARALLEL IF BOARD UNIT NX-1500 87299260 SERIAL I/F BOARD UNIT EXCEPT FOR HK:OPTION 87299270 SERIAL I/F BOARD UNIT X15 HK FOR HK :OPTION 16-3 01903064 SCREW TAT 3-5 CT...

  • Page 78: Pull Tractor Unit (Option)

    3-4. Pull Tractor Unit (option) DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 22- 1 87299340 FRAME R UNIT PT-15X 22- 2 87299350 FRAME L UNIT PT-15X 22- 3 83023560 TRACTOR COVER R PT-15X 22- 4 83023570 TRACTOR COVER L PT-15X 22- 5 83200090...

  • Page 79: Frame Unit

    3-5. Frame Unit – 75 –...
  • Page 80 Frame Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 36-1 83910901 GEAR COVER 36-2 83902300 CARD HOLDER 36-3 83902320 CARRIAGE 83902321 CARRIAGE 87060471 CARRIAGE ASSY INCLUDES NO.36-7 36-4 81210310 BUSHING 4X5X4.5 36-5 80902140 TIMING BELT HTD102 524X4.8 36-6 80203010 REAR SLIDER 80203011...

  • Page 81: Tractor Unit

    3-6. Tractor Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS 12-1 83901620 TRACTOR HOLDER R 12-2 83901631 TRACTOR HOLDER L 12-3 81360620 TRACTOR SHAFT 81360622 TRACTOR SHAFT 12-4 81370660 TRACTOR STAY 12-5 83110110 SPROCKET WHEEL 12-6 83400311 CLAMP LEVER R 12-7 83400321 CLAMP LEVER L...

  • Page 82: Platen Unit

    3-7. Platen Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 10-1 80202140 PLATEN B 10-1 80202141 PLATEN B 10-2 83100550 PLATEN GEAR A 10-3 83100560 PLATEN GEAR B 10-4 83902310 PLATEN HOLDER 10-5 80530520 PLATEN GEAR SPRING 10-6 04020014 STOP RING SE6.0 04020022...

  • Page 83: Wiring Scheme Of Printer

    Wiring Scheme of The Printer – 79 –...

  • Page 84: Main Logic Board

    Main logic board 5-1. Circuit Diagram – 80 –...
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  • Page 86 – 82 –...
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  • Page 88: Component Layout

    5-2. Component Layout (Main Logic Board) – 84 –...

  • Page 89: Parts List

    5-3. Parts List Main Logic Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 08210052 TTL IC 74LS374P 08200109 IC-RESET M51953BL 08210017 TTL IC 74LS05 08240020 GATE ARRAY MB623153U-XL 08222026 EPROM 27256-150NS XL15.**.C :EXC. SU,PL 08222026 EPROM 27256-150NS XL15.**.SUCG :FOR SU 08222026 EPROM 27256-150NS...
  • Page 90 Main Logic Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 06054734 RD RESISTOR 47 K-OHM 1/6W 06051034 RD RESISTOR 10 K-OHM 1/6W R53-61 06053314 RD RESISTOR 330 OHM 1/6W 06051514 RD RESISTOR 150 OHM 1/6W R63-64 06052214 RD RESISTOR 220 OHM 1/6W R65-67 06051034 RD RESISTOR 10 K-OHM 1/6W...
  • Page 91 Main Logic Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK C207 05024781 CHEM. CAPA. 4700UF C208 05152231 CERA. CAPA. 0.022UF 50V C209-210 05022271 CHEM. CAPA. 220UF DB201-202 *1 08990217 DIODE STACK RBA-401 08990220 DIODE STACK D3SB10 08990227 DIODE STACK D3SB20 XTAL1 09250035 CERA.

  • Page 92: Control Panel Board

    Control Panel Board 6-1. Circuit Diagram – 88 –...

  • Page 93: Component Layout

    6-2. Component Layout 6-3. Parts List Control Panel Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK R1-2 06042715 RD RESISTOR 270 OHM 1/4W NOT MOUNTED R4-11 06042715 RD RESISTOR 270 OHM 1/4W LED1 08300055 LED LT-1H11A LED2 08300058 LED LT-1E21A LED3 NOT MOUNTED...

  • Page 94: Fuse Board

    Fuse Board 7-1. Circuit Diagram 7-2. Component Layout 7-3. Parts List DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 05291042 FILM CAPA. 0.1UF 250V C2-3 05192224 CERA. CAPA. 2200PF 400V EXCEPT FOR HK,SU NOT MOUNTED :HK,SU 09251106 LINE FILTER SU10V-05050 09990058 FUSE 5TT1A 250V FOR US,TW...

  • Page 95: Parrallel Straight Board

    Parallel Straight Board 8-1. Circuit Diagram – 91 –...

  • Page 96: Component Layout

    8-2. Component Layout [Old Board] [New Board] 8-3. PartsList Parallel Straight Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 06041521 RD RESISTOR 1.5 K-OHM 1/4W 09100155 CONNECTOR 57L-40360-770B-D147 09100327 CONNECTOR AKD-30DLMDB2R J1-2 93930001 JUMPER WIRE STP123 NOT MOUNTED 93930001 JUMPER WIRE STP123 93930001...

  • Page 97: Serial Buffer Board (Option)

    Serial Buffer Board (option)] 9-1. Circuit Diagram – 93 –...

  • Page 98: Component Layout

    9-2. Component Layout [Old Board] [New Board] – 94 –...

  • Page 99: Parts List

    9-3. Parts List Serial Buffer Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 08220102 HD63A03YF 08250011 MASKED CPU HD63B01YF-IF IC6 IS NOT MOUNTED NOT MOUNTED 08210112 TTL IC 74LS00 (FLAT TYPE) 08200126 IC-I/F LT1081CS 08200127 IC-I/F MC34051M 08220090 EPROM 2764-200NS X.**.OPB...

  • Page 100: Parallel Buffer Board (Option)

    10. Parallel Buffer Board (option) 10-1. Circuit Diagram – 96 –...

  • Page 101: Component Layout

    10-2. Component Layout – 97 –...

  • Page 102: Parts List

    10-3. Parts List Parallel Buffer Board DRWG.NO. REV. PARTS NO. PARTS NAME Q'TY REMARKS RANK 08250011 MASKED CPU HD63B01YF-IF NOT MOUNTED 08221033 PSRAM TC518128AFL-80 08210113 TTL IC 74LS05 (FLAT TYPE) IC5-6 08210112 TTL IC 74LS00 (FLAT TYPE) 08210114 TTL IC 74LS112 (FLAT TYPE) NOT MOUNTED NOT MOUNTED 06751021...

  • Page 103: Waveform With Oscilloscope

    11. Waveform with Oscilloscope (1) Crystal (10 MHz) (2) RESET (Power on reset) Crystal Pin 33 of IC9 Upper : RESET input Pin 4 of IC2 Time/Div : 0.2 µs Lower : RESET output Pin 5 of IC2 Volt/Div : 1V Time/Div : 10 ms Volt/Div : 2V...
  • Page 104 (7) Carriage Motor Control Signal and Driving Signal (8) Paper Feed Motor Common Control Signal and Driving Signal Upper : Carriage-ø1 Control Signal Pin 13 of IC9 Upper : LF-CMN Control Signal Pin 22 of IC9 Lower : Carriage-ø1 Driving Signal Pin 3 of CN5 Lower : LF-CMN Driving Signal Pin 1 of CN6 Time/Div : 1 ms...
  • Page 106 HEAD QUARTERS OVERSEAS SUBSIDIARY COMPANIES STAR MICRONICS DEUTSCHLAND GMBH STAR MICRONICS U.K.LTD. STAR MICRONICS CO., LTD. JAPAN STAR MICRONICS AMERICA INC. Westerbachstraße 59 P.O.Box 940330 Star House, Peregrine Business D-60489 Frankfurt/Main 90 Park, Gomm Road, High Wycombe 536 Nanatsushinya, Shimizu, 70-D Ethel Road West.

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