A
Values in the parentheses apply to the FX-1050. 2. Printing is possible for approximately 42 mm after the bottom edge of a page has been detected. Thus, the value 13.5 mm (lowest print position) is given for reference only. Paper feed accuracy cannot be assured in the area approximately 22 mm (0.87) from the bottom edge of the page. Figure 1-3. Cut Sheet Paper Printable Area Max. 203.3( 350)mm ,8(13.8 NOTE 1. Values in the parentheses apply to FX-1050. 2....
Chapter Disassembly Assembly And Adjustment
4.1 GENERAL REPAIR INFORMATION 4.2 DISASSEMBLY AND ASSEMBLY 4.2.1 Upper Case Removal 4.2.2 Control Panel Removal 4.2.3 Push Tractor Unit Removal 4.2.4 Circuit Board Removal 4.2.4.1 PEGX Board Removal 4.2.4.2 PEBFIL-II Board Removal 4.2.5 Printer Mechanism 4.2.5.1 Printer Mechanism Removal 4-13 4.2.5.2 Printhead 4.2.5.3 FPC (Flexible Printed Cable) Removal 4-15 4.2.5.4 Carriage Motor Removal 4.2.5.5 Timing Belt-Belt-Driven Pulley Removal 4-18 4.2.5.6 Home Position Sensor Removal 4-19 4.2.5.7...
Upper Case Removal
To check the interior of this printer, first remove the upper case using the steps listed in the paragraphs below. Prior to beginning the following procedures, be sure to disconnect the power cord and interface cable, and remove the paper installed in the printer. Step 2 Remove CBB (4 X 12) screw securing the upper and lower cases. Step 3 Detach the upper case by pressing in on the two retaining clips. These clips are located on both side of the printer case. Step 4 Disconnect connector CN 11...
List Of Tables
Board Connector Summary Power Supply Pin Function of CPU Pin Function fo GA(E05A15HA) Pin Function of GA(E05A16GA) ST-RAM Conditions 2-2 phase Excitation 1-2 phase Carriage Speed Modes Acceleration Deceleration Control 2-2 phase Excitation Table 2-12. Paper Feed Motor Speed Table 2-13. Paper Feed Direction and Operation 2-55 Table 2-14. Acceleration Deceleration Table 2-15. Relationship Between GA Ports and
Circuit PWM Comparator
Figure 2-16, NJM2355 Internal Circuit As shown in Figure 2-17, when the potential at the NJM2355 is lower than the preset voltage or current value, it is controlled by the dead-time control voltage. When it exceeds the preset value, it is controlled by the error amplifier to keep it lower than the preset value. Figure 2-17. Output Transistor Drive Waveform Figure 2-17. Output Transistor Drive Waveform Figure 2-18 shows the +5 VDC regulator circuit An NJ M2355 switching regulator IC is used for...
List Fo Tables
Troubleshooting Tools Off-Line Unit Parts Symptom and Reference Pages Power Supply Circuit Parts List Power Supply Circuit Unit Repair Control Circuit Parts List Electric Device Because various types of trouble can occur, troubleshooting is not easy to perform. Here, a simple procedure is provided to perform troubleshooting, as shown in Figure 5-1. Foult check using the diagnostic tool Figure 5-1. Troubleshooting Procedure Table 5-1 lists the troubleshooting tools contained in the printer. Use...
Printer Mechanism Operation
The printer mechanism is a 9-pin serial dot matrix impact mechanism. Figure 2-2 shows a drawing of the mechanism. The name in the rectangles indicate relationship between each mechanism and the control circuit on the PEGX board. Figure 2-2. Printer Mechanism Block Diagram Figure 2-2. Printer Mechanism Block Diagram The printer mechanism is composed of the following The printhead is an electromagnetic induction 9-pin serial dot head. Nine dot wires are driven individually to print a dot pattern...
General Repair Information
This chapter describes the disassembly procedures to be used for replacing any of the main components of the FX-850 1 050. Required and helpful tools, measuring instruments, and lubricants listed in Tables 4-1 through 4-3. o Commercially available product E EPSON exclusive tool O Commercially available product E EPSON exclusive product Figure 4-1 shows some of the parts found on the FX-850 1050. Figure 4-1 shows some of the parts found on the FX-850 1050. DIP Switches Platen Knob Paper Release...
Gaeaga
Carriage Motor Drive Circuit Block Diagram The carriage motor is controlled by the carriage motor constant current drive circuit. The phases of the carriage motor are controlled by CRA - CRD of the gate array IC3A E05A 15GA . Two drive systems, 2-2 phase and 1-2 phase excitation, are used. Because the carriage motor has one driving transistor per winding unipolar drive , two drivers become active in the 2-2 phase excitation system and one and two drivers become active alternately...
Print Control Circuit
The carriage mechanism of the printer is driven by the carriage motor. Reversing the motor rotation, holding, and phase switching for the carriage motor are controlled by the 4-phase stepper motor drive IC IC2A STK6722HZ . This IC IC2A is controlled by a gate array IC3A E05A15HA which is controlled by the CPU. The rotational speed of the carriage motor is controlled by another gate array IC3A E05A16GA . This gate array IC7A also outputs the power-down signal PD 1 that shuts off carriage motor...
Interface Overview
The FX-850 1 050 has 8-bit parallel interface as standard. 1.3.1 8-bit Parallel Interface Specifications Data Transmission Mode Synchronization Handshaking Logic Level By BUSY and ACKNLG either or both TTL compatible See Figure 1-6. 57-30360 AMPHENOL or equivalent See Figure 1-7. NOTE Transmission time rising and falling time of every input signal must be less than 0.2 fis. Figure 1-6. Data Transmission Timing of 8-bit Parallel Interface cigure 1-7. 36-Pin 57-30360 Connector Table 1-17 shows...
Ga[eaha
GA E05A15HA Function for Paper Feed Motor The paper feed motor is controlled by the open-loop constant voltage drive circuit. The phases of the paper feed motor are controlled by PFA-PFD of the gate array IC3A E05A15HA . 2-2 Phase excitation system is used. The paper feed motor has one driving transistor per winding unipolar drive , two driver's become active in the 2-2 phase excitation system. Figure 2-45 shows the 2-2 phase excitation system. Figure 2-45. Phase Excitation System...
Cable Connections
The printer components are connected to and controlled by the PEGX board. Figure 2-1 shows the interconnection of the components. Print Plunger Home -h od position PE feed Carriage Release motor motor switch Print Plunger Home -h od position PE feed Carriage Release motor motor switch Each component is connected to one of the connectors on the PEGX board, which are listed in Table 2-1. Table 2-1 describes the connectors. Standard 8-bit parallel interface connector. Used for data transfer from...
List Of Figures
Exterior Views of the FX-850 1050 1-1 Figure 1-2. Printhead Pin Configuration Figure 1-3. Cut Sheet Paper Printable Figure 1-4. Fanfold Paper Printable Figure 1-5. Head Adjustment Lever Figure 1-6. Data Transmission Timing of 8-bit Parallel Figure 1-7. 36-pin 57-30360 Figure 1-8. Self-Test Printing Figure 1-9. Hexadecimal Dump Figure 1-10. Paper End Detection Figure 1-11. Component Figure 1-13. Model-3B60 Figure 1-14. PEGX Figure 1-15. PEBFIL-II Board and Power Figure 1-16. Control...
