Epson LC-7211 Spezifikationen Seite 93
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Main Logic Board
DRWG.NO. REV. PARTS NO. PARTS NAME Q’TY REMARKS RANK
C41 NPN CERA. CAPA. 0.022UF 50V 1
C42-44 NPN CERA. CAPA. 1000PF 50V 3
C45 NPN CERA. CAPA. 470PF 50V 1
C46 NOT MOUNTED
C47 NPN CERA. CAPA. 0.022UF 50V 1
CA1-3 NPN CAPA. ARRAY 100PF 50V 8EL 3
CA4 NPN CAPA. ARRAY 1000PF 50V 4EL 1
R1 NOT USED
R2 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R3-10 NPN RD RESISTOR 4.7 K-OHM 1/6W 8
R11 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R12 NPN RD RESISTOR 100 OHM 1/6W 1
R13-15 NPN RD RESISTOR 4.7 K-OHM 1/6W 3
R16 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R17 NPN RD RESISTOR 4.7 K-OHM 1/6W 1
R18 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R19 NPN RD RESISTOR 4.7 K-OHM 1/6W 1
R20 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R21-22 NPN RD RESISTOR 4.7 K-OHM 1/6W 2
R23 NPN RD RESISTOR 220 OHM 1/6W 1
R24-25 NPN RD RESISTOR 100 OHM 1/6W 2
R26-29 NPN RD RESISTOR 2.2 K-OHM 1/6W 4
R30-33 NOT USED
R34-37 NPN RD RESISTOR 220 OHM 1/6W 4
R38-41 NPN JUMPER WIRE STP122 4 P=5mm
R42 NOT MOUNTED
R43-44 NPN RD RESISTOR 4.7 K-OHM 1/6W 2
R45 NPN RN RESISTOR 5.1 K-OHM 1/6W 1
R46-47 NPN RD RESISTOR 10 K-OHM 1/6W 2
R48 NPN RN RESISTOR 2.2 K-OHM 1/6W 1
R49-50 NPN RD RESISTOR 10 K-OHM 1/6W 2
R51-52 NPN RN RESISTOR 1 OHM 2W 2
R53 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R54 NPN RD RESISTOR 33 K-OHM 1/6W 1
R55 NPN RD RESISTOR 2.2 K-OHM 1/6W 1
R56 NPN RD RESISTOR 10 K-OHM 1/6W 1
R57-58 NPN RD RESISTOR 2.2 K-OHM 1/6W 2
R59-60 NPN RN RESISTOR 1.5 K-OHM 1W 2
R61-62 NPN RD RESISTOR 220 OHM 1/6W 2
R63-71 NPN RD RESISTOR 2.2 K-OHM 1/6W 9
R72-74 NPN RD RESISTOR 220 OHM 1/6W 3
R75-76 NPN RD RESISTOR 10 K-OHM 1/6W 2
R77 NPN RN RESISTOR 1 K-OHM 1/6W 1% 1
R78 NPN RN RESISTOR 5.1 K-OHM 1/6W 1
R79-81 NPN RD RESISTOR 10 K-OHM 1/6W 3
R82-85 NPN RD RESISTOR 2.2 K-OHM 1/6W 4
R86-88 NPN RD RESISTOR 4.7 K-OHM 1/6W 3
R89-91 NPN RD RESISTOR 33 K-OHM 1/6W 3
R92-94 NPN RD RESISTOR 220 OHM 1/6W 3
R95 NPN RD RESISTOR 33 K-OHM 1/6W 1
R96-98 NPN RD RESISTOR 4.7 K-OHM 1/6W 3
R99 NPN RD RESISTOR 220 OHM 1/6W 1
R100-101 NPN RD RESISTOR 10 K-OHM 1/6W 2
RA1 NPN RESIS. ARRAY 4.7K-OHM 1/8W 8EL 1
RA2 NPN RESIS. ARRAY 2.2K-OHM 1/8W 8EL 1
RA3 NPN RESIS. ARRAY 4.7K-OHM 1/8W 4EL 1
- DOT MATRIX PRINTER 1
- INTRODUCTION 3
- CHAPTER 1 5
- GENERAL SPECIFICATIONS 5
- 1. General Specifications 7
- Weight 16.1lbs/7.3kg 8
- Fig. 1-4 Front cover removed 10
- 3. Control Panel 11
- 3-2. EDS Mode Settings 12
- 4. Parallel Interface 13
- 5 Serial Interface (optional) 14
- 5-3. DIP Switch Settings 15
- 6. EE-PROM mode 16
- 6-3. EE-PROM MP 17
- 6-4. Rewriting the EE-PROM 20
- CHAPTER 2 21
- THEORY OF OPERATION 21
- 2. Main Logic Board 24
- 3. Power Supply Circuit 25
- 4. Mechanism 26
- Gear of The Clutch Lever 28
- Idler Gear 28
- Cassette Gear 28
- 4-4. Paper Feed Mechanism 29
- 4-5. Detectors 30
- CHAPTER 3 33
- ADJUSTMENTS 33
- CHAPTER 4 37
- PARTS REPLACEMENT 37
- 1. Front Case Unit 39
- 2. Rear Case Unit 39
- 3. Ribbon Holder 40
- 4. Printer Mechanism 40
- 5. Main Logic Board Unit 41
- 6. Power Supply Unit 41
- 7. Print Head 42
- 9. Tractor Unit 43
- 10. Carriage Motor Assy 44
- 11. Carriage Unit 44
- 12. Paper Feed Roller Assy 45
- 13. Frame Holder 45
- 14. Paper Guide Assy 46
- 15. Platen Assy 46
- 16. Paper Feed Motor Assy 47
- 17. Paper Path Change Plate 47
- 18. Detector 48
- CHAPTER 5 49
- MAINTENANCE AND LUBRICATION 49
- 1-1. Cleaning 51
- 1-2. Checks 51
- 2. Lubrication 52
- CHAPTER 6 57
- TROUBLESHOOTING 57
- 1. Troubleshooting Procedures 59
- 3. Repair by Unit Replacement 61
- CHAPTER 7 73
- PARTS LIST 73
- 1. Printer Assembly 74
- 1-2. Parts List 75
- 2. Printer Mechanism 76
- 2-2. Parts List 77
- Printer Mechanism 78
- 3. Sub - Assembly 79
- 3-2. Front Case Unit 80
- 3-4. Tractor Unit 82
- 3-5. Carriage Unit 83
- 3-6. Frame Base Assy 84
- 3-7. Frame L Unit 85
- 3-8. Frame R Unit 86
- 4. Wiring Scheme of Printer 87
- 5. Electrical Parts 88
- 5-1-2. Component Layout 90
- 5-1-3. Parts List 92
- Main Logic Board 92
- 5-2. Control Panel Board 95
- 5-3. Connected Board 96
- 5-4. Power Supply Unit 97
- 5-4-2. Component Layout 98
- 5-4-3. Parts List 99
- 6-1. Wiring Scheme 101
- 6-2. I/F Board 102
- 6-3. CPU Board 103
- 6-3-2. Component Layout 104
- 6-3-3. Parts List 104
- CPU Board 104
- 7. Waveform with Oscilloscope 105
- Driving Signal Driving Signal 106
- Distributed by 108
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