Confidential
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New toner detection mechanism
The printer detects the amount of the remaining toner with the sensor and indicates the timing to
replace the toner cartridge by displaying ‘Toner Life End’ on the LCD to the user. The problem
such as toner leak or image defect may occur when low-duty printing is continued for a long time.
To prevent such a problem, the printer provides the function displaying the ‘Toner Low’ message
on the LCD when the toner is used to a certain degree to indicate it to the user.
When replacing the toner cartridge with a new one, the printer detects that the toner cartridge is
replaced with a new one by the new toner detection switch and cancels the message on the LCD.
The mechanism to detect the new toner cartridge is as follows:
(1) A new toner cartridge is installed into the drum unit, and the drum unit is installed into the
printer.
(2) The reset gear of the toner cartridge is contacted with the new toner actuator to push the new
toner actuator.
(3) Then, the new toner actuator pushes the new toner detection switch so that it is detected that
a new toner cartridge is installed.
(4) When the toner cartridge is installed into the printer, the reset gear is rotated by the main
motor drive and moved to the position of “Toner in use”.
When the reset gear is moved to the position of “Toner in use”, the new toner actuator is
pulled back by the new toner actuator spring and returned to the original position. When the
reset gear is at the position of “Toner in use”, the reset gear is not returned to the original
position since the reset gear and drive gear of the main motor are not engaged, and the reset
gear is not rotated.
New toner sensor
Main frame L
New toner actuator
New toner sensor
New toner actuator
Drum/toner ASSY
Reset gear
Summary of Contents for Intelli FAX-2820
Page 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS FAX 2820 2825 2910 2920 MFC 7220 7225N ...
Page 13: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 20: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 44: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 63: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 66: ...Confidential 4 2 Cover page sample End page sample ...
Page 67: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 136: ...Confidential 5 67 5 1 41 Harness Routing ...
Page 137: ...Confidential 5 68 ...
Page 138: ...Confidential 5 69 ...
Page 139: ...Confidential 5 70 ...
Page 140: ...Confidential 5 71 ...
Page 141: ...Confidential 5 72 ...
Page 142: ...Confidential 5 73 ...
Page 145: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 151: ...Confidential CHAPTER 7 CLEANING ...
Page 153: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 158: ...8 4 Confidential MFC 7220 7225N Menu Set key and keys Start key Stop Exit key ...
Page 161: ...8 7 Confidential Scanning Compensation Data List a b c d e f g h i ...
Page 172: ...8 18 Confidential Cover page sample End page sample ...
Page 180: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
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Page 321: ...February 05 SM FAX037 13 8X5A01 Printed in Japan ...