86
KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT
6.16. Heat Lamp Control Circuit
The temperature of the fixing part of the Fuser Unit is converted to a Voltage by THERMISTOR and input to IC300_pinC21.
The heat lamp is turned on/off by the HTRCTL signal (IC300_pinAE22) through the photo triac (PC2) and the triac (SCR21).
Two thermostats are provided on the AC line as the safety protection devices.
Overheat protection circuit is provided so as to prevent the Fuser unit from overheating when CPU cannot control Fuser by any
problem.
IC504 compares Thermistor voltage (THRMSTR0) and predetermined voltage, which is determined by 3.3V, R581 and R584.
If Therm0 voltage becomes lower than this predetermined voltage (this voltage corresponds to about 240°C), output of
IC504_pin7 becomes "H", then Q530 turns ON.
Once Q530 turns on, IC507_pin7 keeps "H" even after the THRMSTR0 voltage becomes bigger than the voltage of IC504_pin5.
And when IC507_pin7 keeps "H", both Q500 and Q527 turn off.
As the result, once Fuser temperature exceeds 240°C (this temperature is abnormal condition), no current is supplied to Fuser lamp.
1.
Heater control sequence at printing mode
a. After receiving printing data, heater turns on.
b. When heater temperature reaches to the Primary Stable Temperature (170
°
C).
c. When heater temperature reaches to the Secondary Stable Temperature (170
°
C/195
°
C), paper feed starts.
Содержание KX-MB2230JT
Страница 15: ...15 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 4 2 2 General messages ...
Страница 16: ...16 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 4 2 3 Interface messages ...
Страница 46: ...46 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 W1 2 Phase excitation ...
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Страница 136: ...136 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2270 ...
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Страница 138: ...138 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2575 ...
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Страница 144: ...144 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2515 ...
Страница 145: ...145 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Страница 146: ...146 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2545 ...
Страница 147: ...147 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Страница 148: ...148 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Note The above values are the default values ...
Страница 150: ...150 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2575 DP MB310JT ...
Страница 153: ...153 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2270 ...
Страница 154: ...154 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2575 ...
Страница 155: ...155 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT DP MB310JT ...
Страница 156: ...156 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2515 ...
Страница 194: ...194 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 7 3 Skew ...
Страница 196: ...196 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 7 5 The Recording Paper Jam ...
Страница 200: ...200 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 8 2 Skew ADF ...
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Страница 215: ...215 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT CROSS REFERENCE Test Functions P 124 ...
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Страница 221: ...221 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT CROSS REFERENCE Test Functions P 124 ...
Страница 230: ...230 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 15 Toner Detection Flow ...
Страница 233: ...233 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 15 Motor Section 12 3 15 1 Main Motor ...
Страница 234: ...234 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 15 2 FB Motor ...
Страница 235: ...235 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 15 3 ADF MOTOR ...
Страница 237: ...237 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 17 CIS Control Section ...
Страница 240: ...240 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 19 High Voltage Section 1 Main ...
Страница 241: ...241 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 2 CHG GRID ...
Страница 242: ...242 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 TRA ...
Страница 243: ...243 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 DEV DC ...
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Страница 246: ...246 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 2 Confirmation of the main unit ...
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Страница 249: ...249 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Waveform of normal operation ...
Страница 250: ...250 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 21 LAN Section LAN Block Diagram ...
Страница 256: ...256 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 23 2 Troubleshooting Flow Chart ...
Страница 262: ...262 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 Remove the drum cartridge 1 ...
Страница 271: ...271 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 2 Flow Chart for Disassembly ...
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Страница 277: ...277 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 7 Remove the Speaker ...
Страница 279: ...279 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 9 Remove the Right Cover ...
Страница 280: ...280 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 10 Remove the Drive Unit ...
Страница 283: ...283 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 15 Remove the FAN ...
Страница 284: ...284 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 16 Remove the FB Unit ...
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Страница 289: ...289 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 20 Disassemble the FB Unit FB Motor ...
Страница 291: ...291 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 23 Remove the Top Cover ...
Страница 292: ...292 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 14 3 24 Remove the Main Chassis ...
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Страница 310: ...310 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 Close the document cover 1 ...
Страница 325: ...325 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 15 6 1 NG Example ...
Страница 326: ...326 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 15 7 Test Chart 15 7 1 ITU T No 1 Test Chart ...
Страница 327: ...327 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 15 7 2 ITU T No 2 Test Chart ...
Страница 342: ...342 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...
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Страница 437: ...437 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...