Technical Brief (Impact Printers)
Page 1
... renowned for their reliability with LQ FX-980-Nine-pin narrow carriage Wide carriage printers have 4 number in their names EPSON Sales Training EPSON is a 9- These printers have 3 numbers in their names Narrow carriage printers have finer printhead pins which: Hit the ...vs. Reliability - MTBF M Off-carriage motor assembly Functionality-Printing technology LL Why buy an impact printer? only impact printers can handle multi-part forms and multiple paper paths that the printer are either 9- L LL L Nine-pin impact printers - Contents This technical brief provides detailed...
... renowned for their reliability with LQ FX-980-Nine-pin narrow carriage Wide carriage printers have 4 number in their names EPSON Sales Training EPSON is a 9- These printers have 3 numbers in their names Narrow carriage printers have finer printhead pins which: Hit the ...vs. Reliability - MTBF M Off-carriage motor assembly Functionality-Printing technology LL Why buy an impact printer? only impact printers can handle multi-part forms and multiple paper paths that the printer are either 9- L LL L Nine-pin impact printers - Contents This technical brief provides detailed...
Technical Brief (Impact Printers)
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... Made of the highest grade ABS plastic Offers the highest print quality for dot matrix printers Ultra Letter Quality Keeps the cartridge from warping during times of their respective owners. L EPSON's stationary ribbon cartridge Competitive design with smaller ribbon on the motor, which can jam or damage the print head Protects and extends the life...
... Made of the highest grade ABS plastic Offers the highest print quality for dot matrix printers Ultra Letter Quality Keeps the cartridge from warping during times of their respective owners. L EPSON's stationary ribbon cartridge Competitive design with smaller ribbon on the motor, which can jam or damage the print head Protects and extends the life...
Technical Brief (Impact Printers)
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LL Reliability-Off-carriage motor assembly Most EPSON impact printers use an off -carriage motor allows the print head to r EPSON Sales Training EPSON is a registered trademark of lines that the printer can vary depending on printing conditions, and is not carrying the extra motor weight. Off-carriage motor On-carriage motor P u lle y M o to r F ix e d T im in g B e lt R ack P in io...
LL Reliability-Off-carriage motor assembly Most EPSON impact printers use an off -carriage motor allows the print head to r EPSON Sales Training EPSON is a registered trademark of lines that the printer can vary depending on printing conditions, and is not carrying the extra motor weight. Off-carriage motor On-carriage motor P u lle y M o to r F ix e d T im in g B e lt R ack P in io...
Product Support Bulletin(s)
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... the printer back on. Since the initial reading upon loading a single sheet paper, the paper has skewed. This is a printhead wire protection feature. (2) PE sensor may require a repair, adjustment or replacement. NOTES: Error codes 11 and 12 are documented in printhead failures. Platen gap motor HP ...detect error. This is a printhead wire protection feature. 12 Illegal paper positioning. (1) If the paper is loaded using the knob instead of 4 LQ-2550 cont. 03 A 'Verify After Write" check to ensure proper paper handling and prevent paper jams, which can result in the Service Manual ...
... the printer back on. Since the initial reading upon loading a single sheet paper, the paper has skewed. This is a printhead wire protection feature. (2) PE sensor may require a repair, adjustment or replacement. NOTES: Error codes 11 and 12 are documented in printhead failures. Platen gap motor HP ...detect error. This is a printhead wire protection feature. 12 Illegal paper positioning. (1) If the paper is loaded using the knob instead of 4 LQ-2550 cont. 03 A 'Verify After Write" check to ensure proper paper handling and prevent paper jams, which can result in the Service Manual ...
Product Support Bulletin(s)
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...connected to the host computer using the LQ-850/ 1050 PDOS diagnostics (#B765108801 for MS-DOS compatible, #B765108901 for QX-16 computers) to troubleshoot the LQ850/950/1050 series printers, USING PDOS: To use PDOS on using a suitable cable (Epson part no parity. EPSON AMERICA SERVICE, 23610 TELO AVENUE, TORRANCE... on the LQ-850/950/1050 printers, a serial connection must be set to ON, and 2-5 and 2-6 to OFF. This sets the printer to 9600 baud, 8 data bits, and no . 8297 connects the LQ's 6-pin DIN connector to the 80 column position when performing the carriage motor test. This...
...connected to the host computer using the LQ-850/ 1050 PDOS diagnostics (#B765108801 for MS-DOS compatible, #B765108901 for QX-16 computers) to troubleshoot the LQ850/950/1050 series printers, USING PDOS: To use PDOS on using a suitable cable (Epson part no parity. EPSON AMERICA SERVICE, 23610 TELO AVENUE, TORRANCE... on the LQ-850/950/1050 printers, a serial connection must be set to ON, and 2-5 and 2-6 to OFF. This sets the printer to 9600 baud, 8 data bits, and no . 8297 connects the LQ's 6-pin DIN connector to the 80 column position when performing the carriage motor test. This...
User Manual
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...Accidental disruption of cordless telephones. Choosing a Place for the Printer There are several considerations in selecting a location for easy printer operation and maintenance. Place the printer on the same circuit with large motors or other appliances that are controlled by wall switches or ...automatic timers. Leave room for your computer's and printer's memory. Avoid using electrical outlets...
...Accidental disruption of cordless telephones. Choosing a Place for the Printer There are several considerations in selecting a location for easy printer operation and maintenance. Place the printer on the same circuit with large motors or other appliances that are controlled by wall switches or ...automatic timers. Leave room for your computer's and printer's memory. Avoid using electrical outlets...
Technical Manual
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Printhead - Power Transformer FIEV.-A PEBFIL-ll- Component Locations 1-25 PEGX Board Paper Feed Motor Carriage Motor FX-850 FX-1 050 NOTE: In FX-850, the paper tension unit and push tractor unit are excluded. 1.11 MAIN COMPONENTS The FX-850/l 050 printer includes the following major subassemblies: q Model-3B 10\3B60 printer mechanism q PEGX board (main board) q PGPNL board (control panel) q PEBFIL-11 board (filter board) and power transformer q Housing Figure 1-11 shows the FX-850/l 050 component locations. - Board Paper T e n s i o n= Unit Plunger- Figure 1-11.
Printhead - Power Transformer FIEV.-A PEBFIL-ll- Component Locations 1-25 PEGX Board Paper Feed Motor Carriage Motor FX-850 FX-1 050 NOTE: In FX-850, the paper tension unit and push tractor unit are excluded. 1.11 MAIN COMPONENTS The FX-850/l 050 printer includes the following major subassemblies: q Model-3B 10\3B60 printer mechanism q PEGX board (main board) q PGPNL board (control panel) q PEBFIL-11 board (filter board) and power transformer q Housing Figure 1-11 shows the FX-850/l 050 component locations. - Board Paper T e n s i o n= Unit Plunger- Figure 1-11.
Technical Manual
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...host computer, controls the printer mechanism and control panel, and supplies DC voltage. REV.-A 1.11.2 PEGX Board (Main Board) The PEGX board is implemented using gate arrays, the PEGX board features very compact construction. Driver circuits for the motors, sensors, and printhead ...are also included on the PEGX board are: Universal IC q STK6722HZ (IC2A Carriage Motor Driver q NJM2355 (lCIA Switching Regulator IC Gate Array q E05A15HA (IC3A Paper Feed and Carriage Motors controller, and Printhead driver q E05A16GA (IC7A Host computer interface Memory IC q EP-ROM (IC4A...
...host computer, controls the printer mechanism and control panel, and supplies DC voltage. REV.-A 1.11.2 PEGX Board (Main Board) The PEGX board is implemented using gate arrays, the PEGX board features very compact construction. Driver circuits for the motors, sensors, and printhead ...are also included on the PEGX board are: Universal IC q STK6722HZ (IC2A Carriage Motor Driver q NJM2355 (lCIA Switching Regulator IC Gate Array q E05A15HA (IC3A Paper Feed and Carriage Motors controller, and Printhead driver q E05A16GA (IC7A Host computer interface Memory IC q EP-ROM (IC4A...
Technical Manual
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... 2. -19 Figure 2-17. Vx Voltage Circuit 2. -26 Figure 2-27. Figure 2-4. Constant-Voltage Control (+5V DC 2-22 Figure 2-21. REV.-A 2.3.4.5 Printer Error Detection 2-39 2.3.5 Printer Mechanism Control 2-41 2.3.5.1 Carriage Control Circuit 2-41 2.3.5.2 Carriage Motor Software Control 2-49 2.3.5.3 Paper Feed Control Circuit 2-53 2.3.5.4 Plunger Drive Circuit 2-58 2.3.5.5 Printhead Control Circuit 2-60 LIST OF FIGURES Figure...
... 2. -19 Figure 2-17. Vx Voltage Circuit 2. -26 Figure 2-27. Figure 2-4. Constant-Voltage Control (+5V DC 2-22 Figure 2-21. REV.-A 2.3.4.5 Printer Error Detection 2-39 2.3.5 Printer Mechanism Control 2-41 2.3.5.1 Carriage Control Circuit 2-41 2.3.5.2 Carriage Motor Software Control 2-49 2.3.5.3 Paper Feed Control Circuit 2-53 2.3.5.4 Plunger Drive Circuit 2-58 2.3.5.5 Printhead Control Circuit 2-60 LIST OF FIGURES Figure...
Technical Manual
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Carriage Motor Drive Circuit Block Diagram 2-44 Figure 2-37. Home Position Seek Phase States 2-52 Figure 2-43. Phase Excitation System 2.-54 Figure 2-46. Relationship Between Transistors and Plunger ........ 2-59 Figure 2-50. Half-dot Protection Circuit 2. -62 REV.-A LIST OF TABLES Table 2-1..... Pin Function of CPU 2. -27 Table 2-4. Figure 2-29. Data Transmission Timing 2. -35 Figure 2-30. Carriage Motor Control Circuit 2-48 Figure 2-40. Plunger Drive Circuit 2. -58 Figure 2-49. Power Supply Application 2. -11 Table 2-3. GA(E05A15HA) Function...
Carriage Motor Drive Circuit Block Diagram 2-44 Figure 2-37. Home Position Seek Phase States 2-52 Figure 2-43. Phase Excitation System 2.-54 Figure 2-46. Relationship Between Transistors and Plunger ........ 2-59 Figure 2-50. Half-dot Protection Circuit 2. -62 REV.-A LIST OF TABLES Table 2-1..... Pin Function of CPU 2. -27 Table 2-4. Figure 2-29. Data Transmission Timing 2. -35 Figure 2-30. Carriage Motor Control Circuit 2-48 Figure 2-40. Plunger Drive Circuit 2. -58 Figure 2-49. Power Supply Application 2. -11 Table 2-3. GA(E05A15HA) Function...
Technical Manual
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Relationship Between GA Ports and piunger Voltage 2-59 .Q 2-iv Acceleration/Deceleration Mode 2-56 Table 2-15. REV.-A Table 2-12. Paper Feed Direction and Operation 2-55 Table 2-14. Paper Feed Motor Speed 2. -55 Table 2-13.
Relationship Between GA Ports and piunger Voltage 2-59 .Q 2-iv Acceleration/Deceleration Mode 2-56 Table 2-15. REV.-A Table 2-12. Paper Feed Direction and Operation 2-55 Table 2-14. Paper Feed Motor Speed 2. -55 Table 2-13.
Technical Manual
Page 46
... Drives the plunger that opens and shuts the 2 paper bail on the PEGX board. CN8 CN9 CN 10 CN 11 Drives the paper feed motor. 6 Drives the carriage motor. 9 Transfers the state of the connectors on the PEGX board, which are listed in Table c 2-1. Table A-22 Table A-23 Table A-24... Table A-25 2-2 When 26 the optional interface board is mounted, CN 1 is connected to one of the release lever from CN7 the printer mechanism to ...
... Drives the plunger that opens and shuts the 2 paper bail on the PEGX board. CN8 CN9 CN 10 CN 11 Drives the paper feed motor. 6 Drives the carriage motor. 9 Transfers the state of the connectors on the PEGX board, which are listed in Table c 2-1. Table A-22 Table A-23 Table A-24... Table A-25 2-2 When 26 the optional interface board is mounted, CN 1 is connected to one of the release lever from CN7 the printer mechanism to ...
Technical Manual
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E05A15HA uE05A15HA CN7 DE05A15HA Plunger / Paper End Sensor ---- Platen v r I Cantrol Circuit Feed Motor Ribbon Feed I )Kl + + Home Position CN6 Printhead Drive Circuit ( O Carriage Motor Carriage Motor Control Circuit Figure 2-2. Printer Mechanism Block Diagram The printer mechanism is a 9-pin serial dot matrix impact mechanism. Figure 2-2 shows a drawing of the following: q Printhead q Carriage Mechanism q Home Position Sensor q Ribbon Feed Mechanism...
E05A15HA uE05A15HA CN7 DE05A15HA Plunger / Paper End Sensor ---- Platen v r I Cantrol Circuit Feed Motor Ribbon Feed I )Kl + + Home Position CN6 Printhead Drive Circuit ( O Carriage Motor Carriage Motor Control Circuit Figure 2-2. Printer Mechanism Block Diagram The printer mechanism is a 9-pin serial dot matrix impact mechanism. Figure 2-2 shows a drawing of the following: q Printhead q Carriage Mechanism q Home Position Sensor q Ribbon Feed Mechanism...
Technical Manual
Page 49
... home position sensor detects the home position of the carria9e. A home-Position seek is performed when the printer is used for the carria9e motor, position. Since a stepPer motor is initialized. The carriage motor is controlled by the carria9e motor via a timin9thbeelct,aarrniad9me ocvaens bleeftsatonpdpreigdhat nadlosnt9arttheedpaltataenny. REV.-A 2.2.2 Carria9e Mechanism The carria9e is driven by a very simPle...
... home position sensor detects the home position of the carria9e. A home-Position seek is performed when the printer is used for the carria9e motor, position. Since a stepPer motor is initialized. The carriage motor is controlled by the carria9e motor via a timin9thbeelct,aarrniad9me ocvaens bleeftsatonpdpreigdhat nadlosnt9arttheedpaltataenny. REV.-A 2.2.2 Carria9e Mechanism The carria9e is driven by a very simPle...
Technical Manual
Page 51
.... (There are switched using the release lever. The paper ejection is assisted by the paper feed motor. One is for friction feed and the other is for tractor feed.) Rotational movement of the paper feed motor is conveyed to the platen in the case of friction feed, and to the push tractor... unit (the platen also rotates) in the case of the paper feed motor, platen, push tractor unit, paper tension unit, and release mechanism. The paper tension unit is mounted at the top of the platen, and is rotated...
.... (There are switched using the release lever. The paper ejection is assisted by the paper feed motor. One is for friction feed and the other is for tractor feed.) Rotational movement of the paper feed motor is conveyed to the platen in the case of friction feed, and to the push tractor... unit (the platen also rotates) in the case of the paper feed motor, platen, push tractor unit, paper tension unit, and release mechanism. The paper tension unit is mounted at the top of the platen, and is rotated...
Technical Manual
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...fan-fold paper into the tractor unit. A paper tension unit is performed by driving the paper feed motor with the paper release lever set forward to prevent irregular paper feeding and slackening. Paper Release Lever Paper... Tension Roller Gear ~ PaperTensionRoller~\-T '::::s~ Transmission Gear -n .; ' :. .,, >" Platen Gear A / Paper Feed Motor Pinion Gear "..," Paper Feed Transmission Gear (i) Side View & o (ii) Top View (a) Gear Arrangement Paper Paper Tension Roller, > P u s h - Push Tractor ...
...fan-fold paper into the tractor unit. A paper tension unit is performed by driving the paper feed motor with the paper release lever set forward to prevent irregular paper feeding and slackening. Paper Release Lever Paper... Tension Roller Gear ~ PaperTensionRoller~\-T '::::s~ Transmission Gear -n .; ' :. .,, >" Platen Gear A / Paper Feed Motor Pinion Gear "..," Paper Feed Transmission Gear (i) Side View & o (ii) Top View (a) Gear Arrangement Paper Paper Tension Roller, > P u s h - Push Tractor ...
Technical Manual
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... 12 VDC by the full-wave rectifier and smoothing circuit. Table 2-2. This circuit converts the AC voltage from outside the printer is input to the step-down transformer into the PEGX board, PEBFIL-11 board, and power supply transformer. The unregulated... Power Supply Application Voltage Application +5V Logic circuit Plunger solenoid holding voltage Paper feed motor holding voltage Signal pull-up voltage +36V (vu) Plunger solenoid driving voltage Paper feed motor driving voltage Carriage motor driving voltage +24V I Printhead driving voltage (Vp) Option interface voltage + 12V...
... 12 VDC by the full-wave rectifier and smoothing circuit. Table 2-2. This circuit converts the AC voltage from outside the printer is input to the step-down transformer into the PEGX board, PEBFIL-11 board, and power supply transformer. The unregulated... Power Supply Application Voltage Application +5V Logic circuit Plunger solenoid holding voltage Paper feed motor holding voltage Signal pull-up voltage +36V (vu) Plunger solenoid driving voltage Paper feed motor driving voltage Carriage motor driving voltage +24V I Printhead driving voltage (Vp) Option interface voltage + 12V...
Technical Manual
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... generates Italic and Super/subscript characters so that command processing speed is improved and the load on or when the I NIT signal is converted to dot data for one vertical row. REV.-A The control circuit consists mainly of the following ICS: q p P D 7 8 1 0 H G CPU(4B) ...The KPD78 10HG CPU executes the program in the SRAM (6A) when the printer power is turned off . ' Paper feed motor drive circuit The paper feed motor drive circuit drives the paper feed motor using the motor control signals. The CPU also reads the DIP switch and jumper settings and detects the states...
... generates Italic and Super/subscript characters so that command processing speed is improved and the load on or when the I NIT signal is converted to dot data for one vertical row. REV.-A The control circuit consists mainly of the following ICS: q p P D 7 8 1 0 H G CPU(4B) ...The KPD78 10HG CPU executes the program in the SRAM (6A) when the printer power is turned off . ' Paper feed motor drive circuit The paper feed motor drive circuit drives the paper feed motor using the motor control signals. The CPU also reads the DIP switch and jumper settings and detects the states...
Technical Manual
Page 71
... generator), external SRAMS (5A and 6A), and the E05A16G and E05A15A gate arrays (7A and 3A). The CPU controls all of the printer operations either directly or indirectly. Not used IN ON-LINE switch interrupt input - Pin Function of CPU Signal Name PAO I PA5 PA6 ...Direction - Not used IN P/S (Parallel/Serial) data transfer selection signal input OUT PWD signal output OUT Paper feed motor driving control output - REV.-A 2.3.3.1 CPU Functions The printer employs the pPD78 10HG CPU. Not used 2-27 The CPU processes data using the mode register for each port, and...
... generator), external SRAMS (5A and 6A), and the E05A16G and E05A15A gate arrays (7A and 3A). The CPU controls all of the printer operations either directly or indirectly. Not used IN ON-LINE switch interrupt input - Pin Function of CPU Signal Name PAO I PA5 PA6 ...Direction - Not used IN P/S (Parallel/Serial) data transfer selection signal input OUT PWD signal output OUT Paper feed motor driving control output - REV.-A 2.3.3.1 CPU Functions The printer employs the pPD78 10HG CPU. Not used 2-27 The CPU processes data using the mode register for each port, and...
Technical Manual
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...) signal input 10 P1 IN Friction/Tractor switch status input Friction mode: High Tractor mode: Low 11 Po IN Not used 12 CRA OUT Carriage motor driving signal 13 CRB OUT 14 CRC OUT 15 CRD OUT 16 HD 1 OUT Printed driving signal I I (Head Data 1-8) 23 HD8 OUT 24 Vss - Pin... the lower address signals (AO through A7) for the ROM and RAM using data from the CPU. In addition, the gate array controls the carriage motor and paper feed motor, and drives the printhead and plunger solenoids.
...) signal input 10 P1 IN Friction/Tractor switch status input Friction mode: High Tractor mode: Low 11 Po IN Not used 12 CRA OUT Carriage motor driving signal 13 CRB OUT 14 CRC OUT 15 CRD OUT 16 HD 1 OUT Printed driving signal I I (Head Data 1-8) 23 HD8 OUT 24 Vss - Pin... the lower address signals (AO through A7) for the ROM and RAM using data from the CPU. In addition, the gate array controls the carriage motor and paper feed motor, and drives the printhead and plunger solenoids.