Service Manual
Page 43
...Feeding Using the FronEtntrence....2-l7 Figure 2-21. Printhead Drive Circuit 2. -29 Figure 2-30. Release Lever 2. .-.12 Figure 2-11. Control Circuit Block Diagram 2. .-22 figure 2-24. c'.'% . . % ...4 Z.ii Push Tractor Operation Using the Front Paper Entrance 2-8 Figure 2-7. Paper Path for Push ... E2PROM Control Circuit 2. .-30 LIST OF TABLES Table 2-1. Carriage Motor Drive Modes 2.27 . Sensor Circuit Block Diagram 2. .-26 Figure 2-27. Paper Path for Friction Feeding Using the Front Entrance..........2-l6 Figure 2-18. Power Supply Circuit Block...
...Feeding Using the FronEtntrence....2-l7 Figure 2-21. Printhead Drive Circuit 2. -29 Figure 2-30. Release Lever 2. .-.12 Figure 2-11. Control Circuit Block Diagram 2. .-22 figure 2-24. c'.'% . . % ...4 Z.ii Push Tractor Operation Using the Front Paper Entrance 2-8 Figure 2-7. Paper Path for Push ... E2PROM Control Circuit 2. .-30 LIST OF TABLES Table 2-1. Carriage Motor Drive Modes 2.27 . Sensor Circuit Block Diagram 2. .-26 Figure 2-27. Paper Path for Friction Feeding Using the Front Entrance..........2-l6 Figure 2-18. Power Supply Circuit Block...
Service Manual
Page 63
..."" operation of the switching circuit and then the output of +35 VDC voltage. When AC power enters the printer from the external AC power source. This feedback control arrangement ensures a stable +35 VDC voltage supply. A+5VDCvoltage... has a voltage overload protection circuit and a voltage drop protection circuit. The voltage drop protection circuit protects the printer against a sudden voltage drop that maybe caused by feeding the +35 VDCvoltagethrough the +5VDC power supply circuit, ...Operation , :.,., Figure 2-22 shows the power supply circuitry in block diagram form.
..."" operation of the switching circuit and then the output of +35 VDC voltage. When AC power enters the printer from the external AC power source. This feedback control arrangement ensures a stable +35 VDC voltage supply. A+5VDCvoltage... has a voltage overload protection circuit and a voltage drop protection circuit. The voltage drop protection circuit protects the printer against a sudden voltage drop that maybe caused by feeding the +35 VDCvoltagethrough the +5VDC power supply circuit, ...Operation , :.,., Figure 2-22 shows the power supply circuitry in block diagram form.
Service Manual
Page 64
... Circuit 9Filter Circuit AC input I I I I Secondary 1 I 1 1 I - 1 t 1 1 1 1 +5 V Line Voltage Overload Protection Circuit +35 V Line Voltage Drop Protection Circuit ZD53 - ~ Switch Figure 2-22. Power Supply Circuit Block Diagram 2-21 Smoothing < Circuit II1 Circuit 1 m I 1 1 I +5 v 1 1 Switching . 1 Regulator l------ 1 I 1 +5V 1 I Over Current I I I Control Circuit 1 I +5V 1 1 Over Voltage I 1 Control Circuit 1 t 1 I 1 ZD51 Photo- + coupler +35 V Line Detector Circuit . 4 + 3 5 VDC...
... Circuit 9Filter Circuit AC input I I I I Secondary 1 I 1 1 I - 1 t 1 1 1 1 +5 V Line Voltage Overload Protection Circuit +35 V Line Voltage Drop Protection Circuit ZD53 - ~ Switch Figure 2-22. Power Supply Circuit Block Diagram 2-21 Smoothing < Circuit II1 Circuit 1 m I 1 1 I +5 v 1 1 Switching . 1 Regulator l------ 1 I 1 +5V 1 I Over Current I I I Control Circuit 1 I +5V 1 1 Over Voltage I 1 Control Circuit 1 t 1 I 1 ZD51 Photo- + coupler +35 V Line Detector Circuit . 4 + 3 5 VDC...
Service Manual
Page 65
The output signals from the control panel are sent to the gate array, which in block diagram form. 7ETROM 4K BIT Ic 5C1 I 1- It oversees control of all the components of two circuit boards: the C094 MAIN (the main control... Circuit Operation Overview The CPU on the C094 MAIN is the 8-bit TM P90C041F microprocessor (9.83 MHz). Control Circuit Block Diagram 2-22 REV.-A 2.3 Control Circuit Operation The control circuit consists of the printer. PG SENSOR ~ +5vDc ~ +35vDc 11 PE FRONT SENSOR . - 1 m PSEENRSEOARR SLREEEVLNEESRAOSRE CR HOME SENSOR D HEAD THERMISTOR m Data bus...
The output signals from the control panel are sent to the gate array, which in block diagram form. 7ETROM 4K BIT Ic 5C1 I 1- It oversees control of all the components of two circuit boards: the C094 MAIN (the main control... Circuit Operation Overview The CPU on the C094 MAIN is the 8-bit TM P90C041F microprocessor (9.83 MHz). Control Circuit Block Diagram 2-22 REV.-A 2.3 Control Circuit Operation The control circuit consists of the printer. PG SENSOR ~ +5vDc ~ +35vDc 11 PE FRONT SENSOR . - 1 m PSEENRSEOARR SLREEEVLNEESRAOSRE CR HOME SENSOR D HEAD THERMISTOR m Data bus...
Service Manual
Page 69
Sensor Circuit Block Diagram 2-26 REV.-A 2.3.3 Sensor Circuits .>~ ( The FX-870/l 170 printer has the following sensors: CRHOME, pE (FRONT), pE (REAR), pG (platen 9ap), RELEASE LEVER, and HEAD TEMPERATURE. The +35 V monitor circuit is used to print at a half speed. (The PF motor also slows down , the printer resumes printing automatically. As soon asthevoltage...
Sensor Circuit Block Diagram 2-26 REV.-A 2.3.3 Sensor Circuits .>~ ( The FX-870/l 170 printer has the following sensors: CRHOME, pE (FRONT), pE (REAR), pG (platen 9ap), RELEASE LEVER, and HEAD TEMPERATURE. The +35 V monitor circuit is used to print at a half speed. (The PF motor also slows down , the printer resumes printing automatically. As soon asthevoltage...
Service Manual
Page 79
...the main components of each procedure. Note: Exploded diagrams in the printer by simply reversing the procedure for Disassembling the Printer 3-4 Figure 3-1. In general, you need to disassemble the printer. 1 START 1 Disconnect the printer's power cord and interface cable. The flowchafi below... components fit together. Be sure to them as L-=-, necessary. Also disconnect the interface cable. .- WARNING Before disassembling the printer, read the warning in these notes. Refer to follow the instructions in Section3.1. If necessary, special notes on assembling or...
...the main components of each procedure. Note: Exploded diagrams in the printer by simply reversing the procedure for Disassembling the Printer 3-4 Figure 3-1. In general, you need to disassemble the printer. 1 START 1 Disconnect the printer's power cord and interface cable. The flowchafi below... components fit together. Be sure to them as L-=-, necessary. Also disconnect the interface cable. .- WARNING Before disassembling the printer, read the warning in these notes. Refer to follow the instructions in Section3.1. If necessary, special notes on assembling or...
Service Manual
Page 129
..., C094 MAIN A. -.3 Table A-4. CN8 (Board Assembly, C094 MAIN A-4 Table A-9. CN12 (Board Assembly, C094 MAIN A-4 Table A-1 1. FX-I 170 Case Outline Drawing A.l7 LIST OF TABLES Table A-1. BOARD ASSEMBLY, C076 PSE Circuit Diagram A-10 Figure A-8. BOARD ASSEMBLY, C076PSB Circuit Diagram A-8 Figure A-6. BOARD ASSEMBLY, C076 PSE Component Layout A-14 Figure A-12. C094 MAIN Board Connector Summary...
..., C094 MAIN A. -.3 Table A-4. CN8 (Board Assembly, C094 MAIN A-4 Table A-9. CN12 (Board Assembly, C094 MAIN A-4 Table A-1 1. FX-I 170 Case Outline Drawing A.l7 LIST OF TABLES Table A-1. BOARD ASSEMBLY, C076 PSE Circuit Diagram A-10 Figure A-8. BOARD ASSEMBLY, C076PSB Circuit Diagram A-8 Figure A-6. BOARD ASSEMBLY, C076 PSE Component Layout A-14 Figure A-12. C094 MAIN Board Connector Summary...
Service Manual
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d4 r'+ . :> J m / u) EN--l I , t / \ I '=m .0 O-* C2 c. -1 : I I m I 'I k ,,, I 1 * Figure A-4, BOARD ASSEMBLY, C076 PSB Circuit Diagram (Annotated) A-7
d4 r'+ . :> J m / u) EN--l I , t / \ I '=m .0 O-* C2 c. -1 : I I m I 'I k ,,, I 1 * Figure A-4, BOARD ASSEMBLY, C076 PSB Circuit Diagram (Annotated) A-7