Epson LC-7211 Especificações

DOT MATRIX PRINTERLC-7211TECHNICAL MANUAL[ THIRD EDITION ]

– 6 –Fig. 1-5 Diagram of internal layoutFig. 1-4 Front cover removed

– 96 –J10 *2 NPN BEADS INDUCTOR B01-RT 1 FOR US#2 NPN BEADS INDUCTOR RH035047RT-Y7 1 FOR USJ11 *2 NPN BEADS INDUCTOR B01-RT 1#2 NPN BEADS INDUCTOR RH0

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

– 98 –6-2-2. Component Layout6-2-3. Parts List6-2. I/F Board6-2-1. Circuit diagramDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANKIC101 08200125 I

– 99 –6-3. CPU Board6-3-1. Circuit diagram

– 100 –6-3-2. Component Layout6-3-3. Parts ListCPU BoardDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANKIC1 08250011 MASKED CPU HD63B01YF-IF 1IC2

– 101 –7. Waveform with Oscilloscope(1) Crystal (12 MHz) (2) RESET (Power on reset)Crystal Pin 34 of IC1 Upper : RESET input Pin 1 of IC8Time/Div : 0.

– 102 –(7) Paper Feed Motor Common Control Signal and (8) Paper Feed Motor Control Signal andDriving Signal Driving SignalUpper : LF-CM Control Signal

Printed in Japan, 80823422HF-12HDistributed byOVERSEAS SUBSIDIARY COMPANIESSTAR MICRONICS AMERICA INC.70-D Ethel Road West.Piscataway, NJ 08854-5950,

– 7 –3. Control Panel3-1. Switch Combination FunctionsFONT MODE LF ON LINEROMANCOURIERSANSERIFPRESTIGEORATORPOWERDRAFTQUIETBANK SWA1B2C3D4E56FMICRO FE

– 8 –3-2. EDS Mode SettingsBank Switch Function ON OFFA 1 Emulation Standard / EPSON IBM2 Character Table (CT) Standard / EPSON mode Graphics ItalicsI

– 9 –4. Parallel Interface4-1. General SpecificationsItem SpecificationsInterface Centronics-compatibleSynchronization System Via externally supplied

– 10 –5 Serial Interface (optional)When using the serial interface, the optional Serial-Parallel Converter must be connected to the printer.5-1. Gene

– 11 –Handshaking protocols – see table below5-3. DIP Switch SettingsSwitch ON OFF1 8 data bits 7 data bits2 No parity Parity checked345 Odd parity Ev

– 12 –6. EE-PROM mode6-1. OutlineThese settings can be changed in the EE-PROM mode by writing data directly to the EE-PROM on the main logic board:Set

– 13 –6-3. EE-PROM MPAddress Function Factory data00H EDS setting FFHBit Function 1 0b0 EmulationSTANDARD/EPSONIBMCharacter Tableb1 Standard / EPSON m

– 14 –Address Function Factory data04H EDS setting FFHIBM Code Page (Character Table=Graphics, IBM#1, #2)Function b0 b1 b2 b3 b4 Function b0 b1 b2 b3

– 15 –1AH, 1BH Top Margin in Auto-loading Tractor 48H00H1CH, 1DH Top Margin in Auto-loading Friction 48H00H1EH~21H Macro Set EPSON 00H00H22H~25H Macro

NOTICE• All rights reserved. Reproduction of any part of this manual in anyform whatsoever, without STAR’s express permission is forbid-den.• The cont

– 16 –6-4. Rewriting the EE-PROMFollow this procedure to rewrite the EE-PROM.(1) Turn the printer on.(2) Load a BASIC disk in the computer.(3) Turn th

CHAPTER 2THEORY OF OPERATION1. Block Diagram (Main logic Board) ...192. Main Logic B

– 19 –1. Block Diagram (Main logic Board)The block diagram of this printer is shown in Fig. 2-1.Fig. 2-1 Block Diagram(1) Main Logic BoardThis board r

– 20 –Fig. 2-2 General Flow Chart of Editing and Printing2. Main Logic Board2-1. General Flow ChartThe flow chart below shows you the general flow of

– 21 –3. Power Supply CircuitA ringing choke converter type circuit is used with a dropper type circuit in the power supply unit, fulfilling the input

– 22 –4. Mechanism4-1. Print Head MechanismThe print head consists of 9 needle wires and 9 print solenoids.The following explains how each needle wire

– 23 –4-2. Print Head Carrying MechanismThe print head carrying mechanism consists of a carriage, timing belt, carriage motor, and home position detec

– 24 –4-3. Ink ribbon feed mechanismThe ink ribbon feed mechanism is linked to the print head carrying mechanism so the ink ribbon always windsautomat

– 25 –4-4. Paper Feed MechanismThe paper feed mechanism consists of a paper feed motor, an idler gear, a platen and a traction unit.The paper feed mot

INTRODUCTIONThis manual is an introduction to the LC-7211.It is designed for use as a reference for periodic inspections and maintenance procedures to

– 26 –4-5. Detectors(1) Print head temperature detectorsThe A/D converter in the CPU detects the print head temperature at power on and before each li

– 27 –Detectingsignal+5VLeaf switchR2R1+5VR1R2+5VDetectingsignalR5FrictionSkewTractorR3DetectingsignalR8R6DetectingsignalR9R4R7(3) Paper end Detec

CHAPTER 3ADJUSTMENTSThis printer has undergone various adjustments so that it will attain a given standard of performance.In this chapter, a brief exp

– 31 –1. Adjustment of Gap Between Print Head and Platen(1) Remove the front case unit ,rear angle and ribbon holder [1] according to the procedures d

– 32 –2. Adjustment of Timing Belt Tension(1) Remove the front case unit according to the procedures described in chapter 4.(2) Move the carriage unit

– 33 –CHAPTER 4PARTS REPLACEMENTThis chapter explains disassembly and reassembly of the printer. Note the following regarding disassemblyand reassembl

– 35 –(1) Turn off the power switch.(2) Remove the power cord from the AC output socket.(3) Remove• Platen knob unit [1]• Front case unit [2]Detach th

– 36 –3. Ribbon Holder4. Printer Mechanism(1) Remove• Front case unit as described in section 1.• Two screws [1]• Rear angle [2]• Ribbon holder [3]Cen

– 37 –5. Main Logic Board Unit6. Power Supply Unit(1) Remove• Printer mechanism as described in section 4.• Three screws [1]• Connector [2]• Main logi

– 38 –7. Print Head(1) Remove• Front case unit as described in section 1.• Two screws [1]• Cable [2]• Print head [3]WARNINGThe print head gets hot aft

– 39 –(1) Remove• Front case unit as described in section 1.(2) Inspect• Fuse F1 [1]Defective → Replace fuse as follows:AC voltage Fuse Type110/120V 5

– 40 –(1) 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

– 41 –(1) 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 p

– 42 –(1) 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

– 43 –(1) RemovePlaten assy as described in section 15.• Two screws [1]• Paper feed motor assy [2](1) Remove• Paper feed roller A as described in sec

– 44 –(1) Remove• Paper guide assy as described in section 14.• Four detectors [1]Note:Secure the lead wires at one point using fasteners[2] .[2][1][1

CHAPTER 5MAINTENANCE AND LUBRICATION1. Maintenance...

CHAPTER 1GENERAL SPECIFICATIONS1. General Specifications...32.

– 47 –1. MaintenanceIn order to maintain the optimum performance of this printer and to prevent trouble, maintenance must be carried outaccording to t

– 48 –Type of oil Product name MakerGrease MOLYKOTE EM-30L DOW CORNING ASIA LTDLubricant Mobil 1 Mobil oil2. LubricationLubrication is very important

– 49 –Fig. 5-1 Lubricated Areas (printer mechanism)

– 50 –20mm10mm10mm10mm[18][18][17]Fig. 5-3 Lubricated Areas (tractor unit)Fig. 5-2 Lubricated Areas (Carriage unit )

– 51 –Fig. 5-4 Lubricated Areas (Frame R unit)

CHAPTER 6TROUBLESHOOTING1. Troubleshooting Procedures ... 552. Unit Replacem

– 55 –1. Troubleshooting ProceduresTroubleshooting is never easy because various problems arise depending upon the particular location of the breakdow

– 56 –2211122221111112221112. Unit Replacement Priority ChartUnit Exchange SequencePowersupply unitProblemDetailsCategory Remarks23Replace ink ribbonC

– 57 –1) Replace main logicboard.2) Replace printermechanism.ANONOANO1) Replace main logicboard.2) Replace printermechanism.ANOHome positionswitch sig

– 58 –1) Replace main logic board.2) Replace printer mechanism.NO1) Replace main logic board.2) Replace printer mechanism.ANONOAASelfprinting:Carriage

– 59 –NOAPaper feed motor drive waveform isnormal? *2YES*2 See (7) and (8) waveform initem 7 of Chapter 7.Replace printer mechanism.A1) Replace ink ri

– 60 –*4 Power Supply UnitVH (33V) Line +33V ± 5% Between Pin 4 and Pin 3 of CN101VL (5V) Line +5V ± 5% Between Pin 1 and Pin 2 of CN1011) Replace I/

– 61 –*4 Power Supply UnitVH (33V) Line +33V ± 5% Between Pin 4 and Pin 3 of CN101VL (5V) Line +5V ± 5% Between Pin 1 and Pin 2 of CN101NONOA4Output

– 62 –YESNOYESYESDCAI/F mode setup properly?NOChange I/F mode.I/F signal isnormal? *5NOReady condition?YESThere is datatransmission?NOCheck hardware o

– 63 –DC Power abnormal.Check RESET circuit;replace parts.Check crystal circuit;replace parts.1) Replace CPU or ROM.2) Check relevant circuit.NONONONO

– 64 –The no load voltages are below:VH (33V) Line +33V ± 5% Between Pin 4 and Pin 3 of CN101VL (5V) Line +5V ± 5% Between Pin 1 and Pin 2 of CN101YES

– 65 –NONONOSTARTLF-CMNsignal is normal?*4YESLF-ø1,ø2, ø3, ø4 arenormal? *5YESReplaceLF motorCheck operationENDCheck and replace1) TA 22) Gate array4-

– 3 –1. General SpecificationsPrinting System Serial Impact Dot-MatrixPrinting Speed Pitch Draft(cps/dpi) NLQ(cps/dpi)Pice (10cpi) 225/120H 56/240HEli

– 66 –4-4. Defective Print Head OperationA specificpin does notwork?NOPrint is light as whole?NONONONOYESYES*7 See (4) waveform in item 7 of Chapter 7

– 67 –Check I/F cable.Check and replace1) IC 62) Gate array3) CPUNOYES4-5. Defective Interface OperationSTARTPress on line switch totake on line.Send

CHAPTER 7PARTS LISTHOW TO USE PARTS LIST(1) DRWG. NO.This column shows the drawing number of the illustration.(2) REVISED EDITION MARKThis column show

– 70 –1. Printer Assembly1-1. Disassembly Drawing

– 71 –1 89430050 MECHANISM WITH HEAD DP701E (D) 1 S2 87814610 POWER SPLY BD UNIT HA-15 US(D) 1 FOR US S87814620 POWER SPLY BD UNIT HA-15 EC(D) 1 FOR E

– 72 –2. Printer Mechanism2-1. Disassembly Drawing

– 73 –2-2. Parts ListPrinter MechanismDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK1 *2 89137060 PRINT HEAD DP7001E (D) 1 S#2 89137061 PRINT HE

– 74 –50 04020016 STOP RING SE4.0 2 S51 04020015 STOP RING SE3.0 4 S52 04012501 ROLL PIN SP2.5X10 8 S53 02440401 WAVE WASHER WW4X8X0.2X1.5H 2 S54 0221

– 75 –4-1 *2 83026071 LOWER CASE HF-12 1 S#2 83026072 LOWER CASE HF-12 1 S4-2 NPN LOWER CASE CHASSIS HF-12 14-3 NPN RUBBER FOOT 15X15 QBS-10 24-4 0201

– 4 –LabelsBacking sheet: 4.5" to 12" / 114 to 305mmThickness:Backing sheet 0.0028" to 0.0035" / 0.07 to 0.09mmTotal thickness 0.0

– 76 –7-1 87820430 BLIND BRUSH ASSY HF-12(D) 27-2 *1 83904512 PAPER ADJUSTER HF-12 1 :NOTE1#1 83904780 PAPER ADJUSTER HBF-12 1

– 77 –17-817-217-517-717-117-317-417-617-617-63-3. Serial-Parallel Converter ( Option )DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK17-1 NPN UP

– 78 –3-4. Tractor UnitDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK2-1 86436330 TRACTOR L ASSY 701C 1 S2-2 86436320 TRACTOR R ASSY 701C 1 S2-3

– 79 –3-1 86432320 CLUTCH PLATE UNIT 701C 1 S3-2 *2 86432310 CARRIAGE ASSY 701C 1#2 86432311 CARRIAGE ASSY 701C 13-3 86060810 IDLER ASSY 921 13-4 8603

– 80 –5-1 #2 86430630 DETECTOR A UNIT 791C 1 S5-1-1 *2 87770280 CABLE ASSY A 791C(D) 1 S#2 80705710 CABLE UNIT A 791C 15-1-2 83904500 DETECTOR HOLDER

– 81 –11-1 #2 86430620 DETECTOR B UNIT 701C 1 S11-1-1 *2 87770210 CABLE ASSY B 701C(D) 1 S#2 80705650 CABLE UNIT B 701C 1 S11-1-2 83904500 DETECTOR HO

– 82 –3-8. Frame R UnitDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK9-1 86430440 PAPER FEED MOTOR ASSY 791C 1 S9-2 NPN FRAME R ASSY 701C 19-3 8

– 83 –4. Wiring Scheme of Printer

– 84 –5. Electrical Parts5-1. Main Logic Board5-1-1. Circuit Diagram

– 85 –

– 5 –2. External Appearance and CompositionFig. 1-3 Rear view of the PrinterFig. 1-2 Front view of the PrinterFront coverPlaten knobInterface connect

– 86 –5-1-2. Component Layout

– 87 –

– 88 –5-1-3. Parts ListMain Logic BoardDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANKIC1 08250007 CPU TMP90C041 1 SIC2 08221044 PSRAM HM6525

– 89 –Main Logic BoardDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANKC41 NPN CERA. CAPA. 0.022UF 50V 1C42-44 NPN CERA. CAPA. 1000PF 50V 3C45 NPN

– 90 –CN1 09100615 CONNECTOR 57RE4036080BD29A 1CN2 09100621 CONNECTOR 53253-1210 1CN3 09100573 CONNECTOR 53253-0610 1CN4 09100620 CONNECTOR 53253-0810

– 91 –SW0-2 09010041 PUSH SWITCH SKHHAL 3OLSW 09010041 PUSH SWITCH SKHHAL 1LED0-5,P *2 08300151 LED LTL232 7#2 08300168 LED GL3EG8 75-2-2. Component L

– 92 –5-3-2. Parts ListRelay Board5-3. Connected Board5-3-1. Component LayoutDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANKCN7 09100373 CONNECTO

– 93 –5-4. Power Supply Unit5-4-1. Circuit Diagram

– 94 –5-4-2. Component Layout

– 95 –5-4-3. Parts ListPower Supply UnitDRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANKR1 NPN CEMENT RESISTOR 5.6 OHM 5W 1 FOR USNPN CEMENT RESIS