3.5.6. Fuser Temperature Control Circuit
IHON :
This is the IH power output control signal. When the IHON ( pin 68 of IC14 ) is a high, the current supplies from the IH power
board to the IH coil. The heat roller is heated.
IHPOWER
This signal is for controlling the IH power level which is supplied from the IH power board to the IH coil. IC14
DZCROS
This is the zero cross detection signal of AC input voltage.
VIN100V
There are 2 kinds ( power board for 100/120 VAC, power board for 220/230 VAC ) of the power supply unit for this printer. When
the 100V/200V power supply board is installed, the signal VIN100V is a low.
NCSAD
This is the chip select signal for the A/D converter on the IH power board.
SCLKAD
This is the A/D converter serial clock signal.
SDOAD
This is the A/D converter output data signal.
ADIAD
This is the A/D converter input signal.
This circuit controls the temperature of the fuser by turning the IH power on and off. To turn on the IH coil, IC14 outputs the high
level IHON (pin68 of IC14). The resistance of the thermistor varies based on the fuser temperature, which varies the voltage (
TH1HIGH, TH2HIGH ) inputted into pins 87 and 88 of IC1 (CPU). The CPU detects difference between these voltages and the
reference voltage recorded in the CPU, which controls the IHPOWER signal ( pin 67 of IC14 ). The IHPOWER signal is for
controlling the IH power output level. The IH power is varied by controlling the duty of IHPOWER. When the duty of IHPOWER is
heavy, the output from IH power is increased.
High Temperature Detection Circuit
This circuit is for detecting the abnormal high temperature of fuser. When the voltage of TH1HIGH (pin2 of IC6) is IC6 reference
voltage 0.60V or higher, the signal TH1HIGH (pin 179 of IC14) becomes a high level and IC (CPU) receives this information
through IC14. IC1 detects the fuser abnormal high temperature [210°C or more (200°C or more at preheat mode)], displays the
error message “Printer Error 41” and turns off the IH power.
Pressure Roller Temperature Detection Circuit
This circuit is for detecting the abnormal high temperature of pressure roller surface. The resistance of thermistor varies
depending on the pressure roller temperature, which changes the voltage (THFUSE) into pin 1 (IC15; Analog Switch)
29
DP-CL18
Содержание Workio DP-CL18
Страница 8: ...1 2 15 LCD Board Marked PbF 8 DP CL18 ...
Страница 12: ...DP CL18 12 ...
Страница 21: ...21 DP CL18 ...
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Страница 44: ...3 5 17 Automatic Duplex Unit ADU Detection and ADU Jam Detection Sensor Circuits 44 DP CL18 ...
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Страница 67: ...67 DP CL18 ...
Страница 71: ...4 Troubleshooting 4 1 Initial Troubleshooting Flowchart 71 DP CL18 ...
Страница 72: ...4 2 Jam 4 2 1 Print Media Problem 72 DP CL18 ...
Страница 73: ...4 2 2 Print Media Skew 73 DP CL18 ...
Страница 74: ...4 2 3 Paper Jam at the media tray 74 DP CL18 ...
Страница 75: ...4 2 4 Paper Jams at the registration roller 75 DP CL18 ...
Страница 76: ...4 2 5 Paper Jams at the 2nd bias transfer roller 76 DP CL18 ...
Страница 77: ...4 2 6 Paper Jams at the fuser unit 77 DP CL18 ...
Страница 78: ...4 2 7 Multi purpose Tray Jams 78 DP CL18 ...
Страница 79: ...4 2 8 Wrong paper length Jams 79 DP CL18 ...
Страница 80: ...4 2 9 Paper Jams at the upper optional media tray OPF1 80 DP CL18 ...
Страница 81: ...4 2 10 Paper Jams at the lower optional media tray OPF2 81 DP CL18 ...
Страница 82: ...4 2 11 Paper Jam at automatic duplex unit ADU 82 DP CL18 ...
Страница 83: ...4 2 12 HDD I O Error 83 DP CL18 ...
Страница 84: ...4 3 Print Quality 4 3 1 Blank Print 84 DP CL18 ...
Страница 85: ...4 3 2 All black Print 85 DP CL18 ...
Страница 86: ...4 3 3 Missing Primary Color 86 DP CL18 ...
Страница 87: ...4 3 4 Light Print 87 DP CL18 ...
Страница 88: ...4 3 5 Repeated spots or lines on print in line with each other 88 DP CL18 ...
Страница 89: ...4 3 6 Dark Vertical Line in Print 89 DP CL18 ...
Страница 90: ...4 3 7 White horizontal line or band in all the color of a print 90 DP CL18 ...
Страница 91: ...4 3 8 Mis transfer missing portions of toner 91 DP CL18 ...
Страница 92: ...4 3 9 Dirty Background 92 DP CL18 ...
Страница 93: ...4 3 10 Partial Primary Color Dots 4 3 11 Dark Irregular Streaks in Print 93 DP CL18 ...
Страница 94: ...4 3 12 Primary Color Irregular Streaks 94 DP CL18 ...
Страница 95: ...4 3 13 Ghosting 95 DP CL18 ...
Страница 96: ...4 3 14 Unfused or Partially Fused Printing 96 DP CL18 ...
Страница 97: ...4 3 15 Image is skewed on the paper 97 DP CL18 ...
Страница 98: ...4 3 16 Stains on Back of Print 98 DP CL18 ...
Страница 99: ...4 3 17 No Printing on Edge of Print 99 DP CL18 ...
Страница 100: ...4 3 18 Image is not centered on the print when it should be 100 DP CL18 ...
Страница 101: ...4 4 Printer Error Call Service 4 4 1 Printer Error 10 101 DP CL18 ...
Страница 102: ...4 4 2 Printer Error 11 102 DP CL18 ...
Страница 103: ...4 4 3 Printer Error 20 103 DP CL18 ...
Страница 104: ...4 4 4 Printer Error 24 104 DP CL18 ...
Страница 105: ...4 4 5 Printer Error 35 105 DP CL18 ...
Страница 106: ...4 4 6 Printer Error 36 106 DP CL18 ...
Страница 107: ...4 4 7 Printer Error 37 and Printer Error 38 107 DP CL18 ...
Страница 108: ...4 4 8 Printer Error 40 and Printer Error 43 108 DP CL18 ...
Страница 109: ...4 4 9 Printer Error 41 109 DP CL18 ...
Страница 110: ...4 4 10 Printer Error 45 110 DP CL18 ...
Страница 111: ...4 4 11 Printer Error 46 111 DP CL18 ...
Страница 112: ...4 4 12 Printer Error 47 112 DP CL18 ...
Страница 113: ...4 4 13 Printer Error 48 113 DP CL18 ...
Страница 114: ...4 4 14 Printer Error 50 114 DP CL18 ...
Страница 115: ...4 4 15 Printer Error 53 115 DP CL18 ...
Страница 116: ...4 4 16 Printer Error 54 116 DP CL18 ...
Страница 117: ...4 4 17 Printer Error 56 117 DP CL18 ...
Страница 118: ...4 4 18 Printer Error 65 118 DP CL18 ...
Страница 119: ...4 4 19 Printer Error 66 119 DP CL18 ...
Страница 120: ...4 4 20 Printer Error 70 120 DP CL18 ...
Страница 121: ...4 4 21 Printer Error 72 121 DP CL18 ...
Страница 122: ...4 4 22 Printer Error 73 122 DP CL18 ...
Страница 123: ...4 4 23 Printer Error 80 123 DP CL18 ...
Страница 124: ...4 4 24 Printer Error 81 124 DP CL18 ...
Страница 125: ...4 4 25 Printer Error 82 125 DP CL18 ...
Страница 126: ...4 4 26 Printer Error 83 126 DP CL18 ...
Страница 127: ...4 4 27 Printer Error 84 127 DP CL18 ...
Страница 128: ...4 4 28 Printer Error 90 128 DP CL18 ...
Страница 129: ...4 4 29 Printer Error 91 Printer Error 92 and Printer Error 96 129 DP CL18 ...
Страница 130: ...4 4 30 Printer Error 93 94 130 DP CL18 ...
Страница 131: ...4 4 31 Printer Error 95 131 DP CL18 ...
Страница 132: ...4 4 32 Printer Error 98 132 DP CL18 ...
Страница 133: ...4 5 No Message 133 DP CL18 ...
Страница 134: ...4 6 No Printing 4 6 1 Using Parallel Interface 134 DP CL18 ...
Страница 135: ...4 6 2 Using USB Interface 135 DP CL18 ...
Страница 136: ...4 6 3 Using Network Interface 136 DP CL18 ...
Страница 137: ...4 6 4 No LCD Message 137 DP CL18 ...
Страница 138: ...138 DP CL18 ...
Страница 139: ...5 Schematic Diagram and Component Reference Guide 139 DP CL18 ...
Страница 140: ...140 DP CL18 ...
Страница 172: ...DP CL18 172 ...
Страница 184: ...6 Replacement Parts List 6 1 Printer Main Control Board 184 DP CL18 ...
Страница 203: ...6 3 Engine Control Board 203 DP CL18 ...
Страница 204: ...Integrated Circuits and Transistors Ref No Part No Part Name Description IC1 C2DBYG000010 IC 204 DP CL18 ...