Page 1 DOT MATRIX PRINTER LC-7211 TECHNICAL MANUAL [ THIRD 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 is an introduction to the LC-7211. 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 ..............5 Control Panel ......................7 3-1. Switch Combination Functions ................3-2. EDS Mode Settings ....................Parallel Interface....................9 4-1. General Specifications ................... 4-2. Connector Signals ....................Serial Interface (optional) ................... 10 5-1.
Page 7: General Specifications
General Specifications Printing System Serial Impact Dot-Matrix Printing Speed Pitch Draft(cps/dpi) NLQ(cps/dpi) Pice (10cpi) 225/120H 56/240H Elite (12cpi) 270/120H 67/240H Condensed pica (17cpi) 191/240H 95/240H Condensed elite (20cpi) 225/240H 112/240H H:half-dot Print Direction Draft: Bi-directional logic seeking NLQ: Uni-directional/bi-directional logic seeking (selectable) Bit-Image: Uni-directional/bi-directional logic seeking (selectable) Print Head...
Page 8 Labels Backing sheet: 4.5" to 12" / 114 to 305mm Thickness: Backing sheet 0.0028" to 0.0035" / 0.07 to 0.09mm Total thickness 0.0075" / 0.19mm max. Envelope 9.4 × 4.1 / 240 × 104mm Emulation Standard Mode: EPSON ESC/P (9-pin) IBM Mode: Proprinter III Interface Standard:...
Page 9: External Appearance And Composition
External Appearance and Composition Front cover Adjustment lever Paper guide Platen knob Power switch Interface connector Control panel Fig. 1-2 Front view of the Printer Release laber Fig. 1-3 Rear view of the Printer – 5 –...
Page 10 Fig. 1-4 Front cover removed Fig. 1-5 Diagram of internal layout – 6 –...
Page 11: Control Panel
Control Panel 3-1. Switch Combination Functions BANK ROMAN POWER SANSERIF COURIER DRAFT PRESTIGE ORATOR QUIET MICRO FEED QUIET FONT MODE ON LINE = Push = Hold Short test 2 Hex-Dump Long test Short test 1 Dot-adjust mode EDS mode EDS mode Aging mode POWER-ON Quiet...
Page 12: Eds Mode Settings
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 (Not used) Paper Out Detector Enabled Disabled (Not used) Graphics Direction Bi-directional Uni-directional...
Page 13: Parallel Interface
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 4.1µs 4.1µs Data STROBE (EDS B-6 : ON) STROBE (EDS B-6 : OFF) BUSY t : More than 0.5µs Fig.
Page 14: Serial Interface (Optional)
Serial Interface (optional) When using the serial interface, the optional Serial-Parallel Converter must be connected to the printer. 5-1. General Specifications Item Specifications Interface RS-232C level Synchronization System Asynchronous Baud rate 150 - 19,200 bits per second (BPS) [selectable] 150, 300, 600, 1200, 2400, 4800, 9600, 19200 BPS Word length Start bit: 1 bit...
Page 15: Dip Switch Settings
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 to ON before the printer leaves the factory. Protocol Switch 3 Switch 4...
Page 16: Ee-Prom Mode
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 17 6-3. EE-PROM MP 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 (Not used) — — b4 Paper out Detector Enabled Disabled...
Page 18 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 #3841 #850 #3843 #860 #3844 #861 #3845 #863 #3846 #864 #3847 #866 #3848 #3840 #852 International Character Set (Character Table=Italics) Function...
Page 19 Address Function Factory data 1AH, 1BH Top Margin in Auto-loading Tractor 1CH, 1DH Top Margin in Auto-loading Friction 1EH~21H Macro Set EPSON 22H~25H Macro Set IBM 26H, 27H TEAR OFF (Short) 28H, 29H TEAR OFF (Long) 2AH, 2BH Initial Condition Area 2CH~54H Auto Start Area EPSON (41 byte) 55H~70H...
Page 20: Rewriting The Ee-Prom
6-4. Rewriting the EE-PROM Follow this procedure to rewrite the EE-PROM. Turn the printer on. Load a BASIC disk in the computer. Turn the computer on. Set a sheet of paper in the printer, and press the ON LINE switch. Enter the program listed below and run the program.
Page 21: Theory Of Operation
CHAPTER 2 THEORY OF OPERATION Block Diagram (Main logic Board) ..............19 Main Logic Board ....................20 2-1. General Flow Chart ....................Power Supply Circuit ..................21 Mechanisms ......................22 4-1. Print Head Mechanism ..................4-2. Print Head Carrying Mechanism ................. 4-3. Ink Ribbon Feed Mechanism ................4-4.
Page 23: Block Diagram (Main Logic Board)
Block Diagram (Main logic Board) The block diagram of this printer is shown in Fig. 2-1. Data (From Host Computer) Print head Parallel Carriage Driver interface motor Gate array Switch Masked ROM Detectors Control panel board UVE-PROM Paper feed Driver 512K motor EE-PROM...
Page 24: Main Logic Board
Main Logic Board 2-1. General Flow Chart 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 Return?
Page 25: Power Supply Circuit
Power Supply Circuit A ringing choke converter type circuit is used with a dropper type circuit in the power supply unit, fulfilling the input and output conditions described in the chart below. Voltage Range Max. Current Output Service Circuit Type 110VAC, 120VAC 1.0 A Input...
Page 26: Mechanisms
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 27: Print Head Carrying Mechanism
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 28: Ink Ribbon Feed Mechanism
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 29: Paper Feed Mechanism
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. You can select the method you want to use by setting the release lever on the optional push tractor unit.
Page 30: Detectors
4-5. Detectors Print head temperature detectors The A/D converter in the CPU detects the print head temperature at power on and before each line begins to print. Printer head Thermistor Fig. 2-8 Printer head temperature detector circuit Control Method A/D Conversion Value Temperature AN Voltage Print...
Page 31 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. Detecting signal Friction Detecting signal Skew Detecting signal Tractor Fig. 2-10Paper end detector circuit Control Method Output Detection...
Page 33 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 35 Adjustment of Gap Between Print Head and Platen Remove the front case unit ,rear angle and ribbon holder [1] according to the procedures described in chapter 4. (Fig. 3-1) Install rear angle [2]. Set adjusting lever [3] to the second position from the bottom. (Fig. 3-1) Position the center of the carriage unit [4] 55 mm from the left end of the platen assy [5].
Page 36 Adjustment of Timing Belt Tension Remove the front case unit according to the procedures described in chapter 4. Move the carriage unit [1] up to the extreme right position. Move the screw [3] fixing tension lever assembly [2] approximately 1mm to loosen the tension, then tighten the screw.
Page 37 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 39: Front Case Unit
Front Case Unit Turn off the power switch. Remove the power cord from the AC output socket. Remove • Platen knob unit [1] • Front case unit [2] Detach the five hooks marked A using the tool shown below. • Control board [3] Detach the two hooks.
Page 40: Ribbon Holder
Ribbon Holder Remove • Front case unit as described in section 1. • Two screws [1] • Rear angle [2] • Ribbon holder [3] Center the carriage unit, tile it, then remove the ribbon holder. Printer Mechanism Remove • Four screws [1] •...
Page 41: Main Logic Board Unit
Main Logic Board Unit Remove • Printer mechanism as described in section 4. • Three screws [1] • Connector [2] • Main logic board [3] Power Supply Unit Remove • Printer mechanism as described in section 4. • Seven screws [1] •...
Page 42: Print Head
Print Head Remove • Front case unit as described in section 1. • Two screws [1] • Cable [2] • Print head [3] WARNING The print head gets hot after printing. Do not touch it until it cools. Adjust • Gap between print head and platen. Refer to section 1 of Chapter 3.
Page 43: Fuse
Fuse Remove • Front case unit as described in section 1. Inspect • Fuse F1 [1] Defective → Replace fuse as follows: AC voltage Fuse Type 110/120V 5TT2A-250V 220V/240V 215-1A-250V New fuse blown → Inspect circuit Tractor Unit Remove • Rear case unit as described in section 2. •...
Page 44: Carriage Motor Assy
10. Carriage Motor Assy Remove • Rear case unit as described in section 2. • Screw [1] • Spring [2] Set tension lever assy [3] in the unlocked posi- tion. • Two screws [4] • Carriage motor unit [5] Note: When assembling the carriage motor assy, the tension lever assy [3] must be secured with the screw [1] when the spring [2] is in place.
Page 45: Paper Feed Roller Assy
12. Paper Feed Roller Assy Remove • Carriage unit as described in section 11 • Four springs [1], [2], [6] • Four stop rings[7] • Two gears [3] • Two plain washer [4] • Tow paper feed roller Assy [5] 13.
Page 46: Platen Assy
14. Paper Guide Assy Remove • Paper feed roller Assy as described in section 12. • Three screws [1] • Frame support (R) [2] • Stop ring [3] • Platen gear [4] • Gear [5] • Frame holder as described in section 13. •...
Page 47: Paper Feed Motor Assy
16. Paper Feed Motor Assy Remove Platen assy as described in section 15. • Two screws [1] • Paper feed motor assy [2] 17. Paper Path Change Plate Remove • Paper feed roller A as described in section 12. • Right stop ring [1] •...
Page 48: Detector
18. Detector Remove • Paper guide assy as described in section 14. • Four detectors [1] Note: Secure the lead wires at one point using fasteners [2] . Solder side – 44 –...
Page 49: Maintenance And Lubrication
CHAPTER 5 MAINTENANCE AND LUBRICATION Maintenance ......................1-1. Cleaning ........................ 47 1-2. Checks ........................47 Lubrication ......................2-1. Lubricant ....................... 48 2-2. Lubricating Method ....................48 Lubricated Areas ....................48...
Page 51 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: Lubricated Areas
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 Fig. 5-1 Lubricated Areas (printer mechanism) – 49 –...
Page 54 Fig. 5-2 Lubricated Areas (Carriage unit ) [17] [18] [18] Fig. 5-3 Lubricated Areas (tractor unit) – 50 –...
Page 55 Fig. 5-4 Lubricated Areas (Frame R unit) – 51 –...
Page 57 CHAPTER 6 TROUBLESHOOTING Troubleshooting Procedures ................Unit Replacement Priority Chart ................ Repair by Unit Replacement................Repair by Parts Replacement ................4-1. Does not Operate at All with Power on............... 63 4-2. Power Supply Circuit Abnormal ................64 4-3. Defective Motor Operation ................... 65 4-4.
Page 59: Troubleshooting Procedures
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
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
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 (6) and waveform in item 7 of Chapter 7. Carriage motor operating waveform is normal? *1...
Page 62 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 (7) and (8) waveform in operation is normal? item 7 of Chapter 7.
Page 63 Printing operation *3 See (4) and (5) waveform in is normal? 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 (7) and (8) waveform in operation is item 7 of Chapter 7.
Page 64 Printing begins? Printing operation normal? 1) Replace I/F cable. Stop print program. 2) Replace main logic board. 3) Check host computer. Carriage moves with hand? Replace printer mechanism. Output (+33V, +5V) of power supply unit is normal? *4 1) Replace main logic board. 2) Replace printer mecha- nism.
Page 65 Output of power supply unit is normal? *4 Turn power off. Replace power supply unit. Connect connector CN6 from main logic board. Turn power on. Fuse blows out? Replace fuse. 1) Replace main logic board. 2) Replace printer mechanism. 3) Replace control panel board. *4 Power Supply Unit +33V ±...
Page 66 *5 See (9) 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
Repair by Parts Replacement 4-1. Does not Operate at All with Power on START +33V, +5V supplied? *1 See 4-2. Power Supply DC Power abnormal. Circuit Abnormal. RESET signal becomes HIGH? *2 Check RESET circuit; replace parts. Crystal waveform is normal? *3 Check crystal circuit;...
Page 68: Power Supply Circuit Abnormal
4-2. Power Supply Circuit Abnormal Remove connector CN101 from power supply unit. START Fuse F1 is blown? Replace Fuse F1 Fuse is blown again? Replace 1) Power supply unit The no load voltages are below: +33V ± 5% VH (33V) Line Between Pin 4 and Pin 3 of CN101 +5V ±...
Page 69: Defective Motor Operation
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) TR6 Check and replace 2) TR7 1) TA 2 3) Gate array 2) Gate array LF-ø1, ø2, ø3, ø4 are Replace...
Page 70: Defective Print Head Operation
4-4. Defective Print Head Operation START Does not print at all? A specific pin does not +33V line work? Check and replace is supplied? • TA3 (HD1, 2, 4, 6) • TA4 (HD3, 7, 8, 9) Check and replace 1) Power supply unit (Refer to item 4-2.) Check and replace 1) TR11...
Page 71: Defective Interface Operation
4-5. Defective Interface Operation START Press on line switch to take on line. Send print program from host computer. *8 See (9) 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 6 2) Gate array...
Page 73 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. Part that have been added in the revised edition are indicated with “#”. Part that have been abolished in the revised edition are indicated with “*”.
Page 74: Printer Assembly
Printer Assembly 1-1. Disassembly Drawing – 70 –...
Page 75: Parts List
1-2. Parts List Printer Assembly DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 89430050 MECHANISM WITH HEAD DP701E (D) 87814610 POWER SPLY BD UNIT HA-15 US(D) FOR US 87814620 POWER SPLY BD UNIT HA-15 EC(D) FOR EC,LA,RU 87814630 POWER SPLY BD UNIT HA-15 UK(D) FOR UK 87814640...
Page 76: Printer Mechanism
Printer Mechanism 2-1. Disassembly Drawing – 72 –...
Page 77: Parts List
2-2. Parts List Printer Mechanism DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 89137060 PRINT HEAD DP7001E 89137061 PRINT HEAD DP7001E 86436010 TRACTOR UNIT 701C 86432010 CARRIAGE UNIT 701C 86432011 CARRIAGE UNIT 701C 86431310 HEAD CABLE ASSY 701C FRAME BASE ASSY 791C 86430420 PF ROLLER ASSY...
Page 78 Printer Mechanism DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 04020016 STOP RING SE4.0 04020015 STOP RING SE3.0 04012501 ROLL PIN SP2.5X10 02440401 WAVE WASHER WW4X8X0.2X1.5H 02210001 PLAIN WASHER WF10X18X1.6 02206002 PLAIN WASHER WF6X13X1.0 02020401 HEXAGON NUT NH4-2 01903073 SCREW TR 3-6 FL SPECIAL 01903038 SCREW TAT 3-10 PT-FL...
Page 79: Sub-Assembly
Sub - Assembly 3-1. Lower Case Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 83026071 LOWER CASE HF-12 83026072 LOWER CASE HF-12 LOWER CASE CHASSIS HF-12 RUBBER FOOT 15X15 QBS-10 02010401 HEXAGON NUT NH4-1 00930803 SCREW TAT 3-8 PT –...
Page 80: Front Case Unit
3-2. Front Case Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 87820430 BLIND BRUSH ASSY HF-12(D) 83904512 PAPER ADJUSTER HF-12 :NOTE1 83904780 PAPER ADJUSTER HBF-12 :NOTE1 83026062 FRONT CASE HF-12 SHEET 3 HF-12 SHEET 2 HF-12 RUBBER CUSHION B HF-12 RUBBER CUSHION A HF-12...
Page 81: Serial-Parallel Converter (Option)
3-3. Serial-Parallel Converter ( Option ) 17-1 17-7 17-5 17-2 17-3 17-8 17-4 17-6 17-6 17-6 DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 17-1 UPPER CASE SPC-8K 17-2 CPU BOARD UNIT SPC-8K 17-3 87590020 IF BOARD UNIT SPC-8K 17-4 LOWER CASE UNIT SPC-8K...
Page 82: Tractor Unit
3-4. Tractor Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86436330 TRACTOR L ASSY 701C 86436320 TRACTOR R ASSY 701C SHEET GUIDE 701C 83200651 TRACTOR BUSHING 83101690 TRACTOR GEAR TRACTOR SHAFT 701C TRACTOR STAY 701C 80521090 SPRING C090-060-0179 04020017 STOP RING SE5.0 2-10...
Page 83: Carriage Unit
3-5. Carriage Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86432320 CLUTCH PLATE UNIT 701C 86432310 CARRIAGE ASSY 701C 86432311 CARRIAGE ASSY 701C 86060810 IDLER ASSY 86032411 GEAR A ASSY 83912331 GEAR COVER 701C 83904490 CARD HOLDER 701C 83200990 REAR ROLLER 83120470...
Page 84: Frame Base Assy
3-6. Frame Base Assy 5-1-3 5-1-2 5-1-3 5-1-2 5-1-1 5-1-3 5-1-2 DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86430630 DETECTOR A UNIT 791C 5-1-1 87770280 CABLE ASSY A 791C(D) 80705710 CABLE UNIT A 791C 5-1-2 83904500 DETECTOR HOLDER 701C 5-1-3 08300152...
Page 85: Frame L Unit
3-7. Frame L Unit 11-1 11-3 11-1-3 11-1-2 11-1-4 11-1-5 11-1-1 11-1-3 11-3 11-2 11-1-5 DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 11-1 86430620 DETECTOR B UNIT 701C 11-1-1 87770210 CABLE ASSY B 701C(D) 80705650 CABLE UNIT B 701C 11-1-2 83904500...
Page 86: Frame R Unit
3-8. Frame R Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 86430440 PAPER FEED MOTOR ASSY 791C FRAME R ASSY 701C 83100510 GEAR 40X0.5 83100110 GEAR 26X0.5 04020010 STOP RING SE2.0 01903064 SCREW TAT 3-5 CT – 82 –...
Page 87: Wiring Scheme Of Printer
Wiring Scheme of Printer – 83 –...
Page 88: Electrical Parts
Electrical Parts 5-1. Main Logic Board 5-1-1. Circuit Diagram – 84 –...
Page 89 – 85 –...
Page 90: Component Layout
5-1-2. Component Layout – 86 –...
Page 91 – 87 –...
Page 92: Parts List
5-1-3. Parts List Main Logic Board DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 08250007 TMP90C041 08221044 PSRAM HM65256BLSP-100NS 08223300 MASKED ROM 1.0 HF-12H 08223271 MASKED ROM 2.0 HA-15 IC SOCKET ICS-32-2T 08222017 EPROM D27C1001D-150NS 08220116 EPROM 27512-150NS HF12 H *.* IC SOCKET ICS-32-2T 08210103 TTL IC 74LS06...
Page 93 Main Logic Board DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK CERA. CAPA. 0.022UF 50V C42-44 CERA. CAPA. 1000PF CERA. CAPA. 470PF NOT MOUNTED CERA. CAPA. 0.022UF 50V CA1-3 CAPA. ARRAY 100PF 50V 8EL CAPA. ARRAY 1000PF 50V 4EL NOT USED RD RESISTOR 2.2 K-OHM 1/6W R3-10...
Page 94 Main Logic Board DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 09100615 CONNECTOR 57RE4036080BD29A 09100621 CONNECTOR 53253-1210 09100573 CONNECTOR 53253-0610 09100620 CONNECTOR 53253-0810 09100267 CONNECTOR 5483-06A 09100317 CONNECTOR 5483-04A CN8-9 09100624 CONNECTOR 51048-1300 CN10 09100622 CONNECTOR 51016-1100 CN11 09100623 CONNECTOR 51020-1100 80705570 FLAT CABLE 11X215...
Page 95: Control Panel Board
5-2. Control Panel Board 5-2-1. Circuit Diagram 5-2-2. Component Layout 5-2-3. Parts List Control Panel Board DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK SW0-2 09010041 PUSH SWITCH SKHHAL OLSW 09010041 PUSH SWITCH SKHHAL LED0-5,P 08300151 LED LTL232 08300168 LED GL3EG8 –...
Page 96: Connected Board
5-3. Connected Board 5-3-1. Component Layout 5-3-2. Parts List Relay Board DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK 09100373 CONNECTOR HLEM16S-1 J118 JUMPER WIRE STP122 – 92 –...
Page 97: Power Supply Unit
5-4. Power Supply Unit 5-4-1. Circuit Diagram – 93 –...
Page 98: Component Layout
5-4-2. Component Layout – 94 –...
Page 99: Parts List
5-4-3. Parts List Power Supply Unit DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK CEMENT RESISTOR 5.6 OHM 5W FOR US CEMENT RESISTOR 10 OHM 5W EXCEPT FOR US RN RESISTOR 62 K-OHM 3W RD RESISTOR 330 K-OHM 1/4W FOR US RD RESISTOR 680 K-OHM 1/4W EXCEPT FOR US...
Page 100 DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK BEADS INDUCTOR B01-RT FOR US BEADS INDUCTOR RH035047RT-Y7 FOR US BEADS INDUCTOR B01-RT BEADS INDUCTOR RH035047RT-Y7 NOISE FILTER HR-24-183 FOR US L1-2 NOISE FILTER LF-4D-183 EXCEPT FOR US NOISE FILTER 64A-6001 EXCEPT FOR US OPTCOUPLER PC123FY2 TRANSISTOR 2SC4546...
Page 101: Serial-Parallel Converter Board ( Option )
Serial - Parallel Converter Board ( Option ) 6-1. Wiring Scheme – 97 –...
Page 102: 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 103: Cpu Board
6-3. CPU Board 6-3-1. Circuit diagram – 99 –...
Page 104: Component Layout
6-3-2. Component Layout 6-3-3. Parts List CPU Board 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...
Page 105: Waveform With Oscilloscope
Waveform with Oscilloscope (1) Crystal (12 MHz) (2) RESET (Power on reset) (4V) (2V) (0V) (0V) (4V) (0V) Crystal Pin 34 of IC1 Upper : RESET input Pin 1 of IC8 Time/Div : 0.2 µs Lower : RESET output Pin 3 of IC8 Volt/Div : 1V Time/Div : 10 ms...
Page 106 (7) Paper Feed Motor Common Control Signal and (8) Paper Feed Motor Control Signal and Driving Signal Driving Signal (4V) (5V) (0V) (0V) (30V) (60V) (0V) (0V) Upper : LF-CM Control SignalPin 39 of IC6 Upper : LF-ø1 Control Signal Pin 13 of IC1 Lower : LF-CM Driving SignalPin 1 of CN3 Lower : LF-ø1 Driving Signal Pin 3 of CN3 Time/Div : 20 ms...
Page 108 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...

Star Micronics LC-7211 Technical Manual

Table of Contents

Chapter 2 Theory of Operation 2

Chapter 4 Parts Replacement

Chapter 6 Troubleshooting

Chapter 7 Parts List

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Summary of Contents for Star Micronics LC-7211

Table of Contents