2-16
Phaser 6121MFP Service Manual
Theory of Operation
Print Control Temperatures
•
The Fuser Roller temperature is set according to the type of media, main body
interior temperature (as measured by the temperature/humidity sensor), and
warm-up start decision.
•
For types of media other than plain paper, the fusing speed is controlled at the
1/2 speed.
Print Control Temperature Adjustments
•
The temperature during print control is adjusted using the menu available
from the control panel.
•
Adjustment steps are 0
°
C, -5
°
C, and -10
°
C.
Protection Against Abnormally High Temperature
The machine provides protection at three different stages to prevent abnormally
high temperature of the Fuser.
Soft Protection
If the Thermistor (TH1) detects a temperature exceeding a predetermined value,
the malfunction code representing abnormally high temperature is displayed. At
this time, the power supply line is shut down.
If the temperature of the Fusing Roller does not reach a predetermined value
within a predetermined period of time after the start of the warm-up cycle, the
power supply line is shut down.
Hard Protection
If the CPU overruns and the output level of the CPU of the Mechanical Control
Board becomes a HIGH or LOW level, and not a pulse output, and a predetermined
temperature or higher is detected, a circuit within the Mechanical Control Board
turns OFF the relay to shut down each power supply line.
Thermostat Protection
If a faulty Thermistor (TH) prevents detection of abnormally high temperatures by
soft protect or hard protect, the thermostat operates at a predetermined
temperature to shut down the power supply line.
Содержание PHASER 6121MFP
Страница 1: ...Phaser 6121MFP Multi Function Printer Phaser 6121MFP Service Manual...
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Страница 12: ...x Phaser 6121MFP Service Manual Contents...
Страница 22: ...xx Phaser 6121MFP Service Manual...
Страница 42: ...1 20 Phaser 6121MFP Service Manual General Information...
Страница 92: ...2 50 Phaser 6121MFP Service Manual Theory of Operation Media Handling Tray 1 Feeder s6121mfp 153...
Страница 106: ...2 64 Phaser 6121MFP Service Manual Theory of Operation...
Страница 109: ...Phaser 6121MFP Service Manual 3 3 Error Messages and Codes s6121mfp 372...
Страница 194: ...3 88 Phaser 6121MFP Service Manual Error Messages and Codes...
Страница 263: ...6 Chapter Adjustments and Calibrations In this chapter Adjust Function Procedures Service Mode Maintenance Mode...
Страница 306: ...6 44 Phaser 6121MFP Service Manual Adjustments and Calibrations...
Страница 307: ...7 Chapter Cleaning and Maintenance In this chapter Maintenance Summary Cleaning Maintenance Procedures...
Страница 327: ...Phaser 6121MFP Service Manual 8 7 Service Parts Disassembly 2 Remove the Imaging Unit s6121mfp 197...
Страница 355: ...Phaser 6121MFP Service Manual 8 35 Service Parts Disassembly 11 Remove the screw metal 6mm and the stopper s6121mfp 212...
Страница 383: ...Phaser 6121MFP Service Manual 8 63 Service Parts Disassembly 4 Unhook the tab and remove the harness guide s6121mfp 242...
Страница 395: ...Phaser 6121MFP Service Manual 8 75 Service Parts Disassembly 10 Disconnect connector CN13 s6121mfp 350 CN3...
Страница 402: ...8 82 Phaser 6121MFP Service Manual Service Parts Disassembly 7 Remove the motor cover s6121mfp 359...
Страница 405: ...Phaser 6121MFP Service Manual 8 85 Service Parts Disassembly 3 Remove the spring s6121mfp 255...
Страница 406: ...8 86 Phaser 6121MFP Service Manual Service Parts Disassembly 4 Remove 2 E rings belt 2 gears and bearing s6121mfp 256...
Страница 411: ...Phaser 6121MFP Service Manual 8 91 Service Parts Disassembly 6 Disconnect connector CN13 s6121mfp 350 CN3...
Страница 412: ...8 92 Phaser 6121MFP Service Manual Service Parts Disassembly 7 Remove the harness from the wire saddle s6121mfp 262...
Страница 414: ...8 94 Phaser 6121MFP Service Manual Service Parts Disassembly 9 Unhook the 2 tabs and remove the fan motor s6121mfp 363...
Страница 431: ...Phaser 6121MFP Service Manual 8 111 Service Parts Disassembly 3 Push the lever and remove the Duplex Unit s6121mfp 302...
Страница 432: ...8 112 Phaser 6121MFP Service Manual Service Parts Disassembly...
Страница 437: ...Phaser 6121MFP Service Manual 9 5 Parts List...
Страница 477: ...Phaser 6121MFP Service Manual 9 45 Parts List...
Страница 488: ...9 56 Phaser 6121MFP Service Manual Parts List...
Страница 489: ...10 Chapter Wiring In this chapter Plug Jack Designations and Locator Diagrams Wiring Diagrams...
Страница 507: ...A Appendix Reference In this chapter Phaser 6121MFP Menu Map Firmware Update Acronyms and Abbreviations...
Страница 530: ...1 6 Phaser 6121MFP Service Manual Index...
Страница 531: ......