77
KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT
6.12.16. Toner Life Sensor Circuit
1.
General
This circuit detects whether the Toner is brand-new or secondhand.
And if Toner is detected as brand-new, after predetermined printing, Fuse, which is installed inside of the Toner is cut.
After cutting the fuse, the Toner is judged as secondhand, and Toner life counting starts.
This circuit consists of Fuse cut block and Toner type detection block.
2.
Circuit diagram
3.
Circuit Explanation of Fuse cut block
When IC300_pinK26 is "H", Q608, Q609 and Q610 are turned on. Then current flows F99 through R687/R688. Conse-
quently Fuse is cut within 1 second.
R687 and R688 are supplied to protect Q608 and Q609 from the fuse cut current.
4.
Circuit Explanation of Toner type detection block
This block detects whether Toner is brand-new or secondhand.
And also detect if the contact of the terminal is normal or abnormal (contact error).
(1) In case of Brand-new Toner
Since Fuse is not open, resistance between the fuse is approx. 4ohm.
So the voltage level of point A in the above circuit diagram is less than 1V.
As the result, both Q613 and Q614 are turned on.
(2) In case of secondhand Toner
When Fuse is open, resistance between the fuse is determined by the resistance of R99 (220ohm).
Since the resistance of R693 is 120ohm, the voltage level of point A in the above circuit diagram is approx. 3.5V.
Consequently Q614 is turned on and Q613 is turned off.
(3) In case of contact error of the terminal
Since both F99 and R99 are open condition, resistance between the fuse is infinite.
So the voltage level of point A in the above circuit diagram is approx. 5V.
Then both Q613 and Q614 are turned off.
According to the above transistor condition, the logic level of IC300_pinL24 and K26 are changed as below table.
Thus by checking these 2 signal levels, drum cartridge condition can be detected.
TNR_CNTCT
(IC300_pinK26)
TNR_LIFE
(IC300_pinL24)
Toner
status
L
L
contact error
H
L
Secondhand
L
H
(Not used)
H
H
Brand-new
IC302
IC300
10
L 24
K26
Toner_Unit
TNR_LIFE
TNR _CNTCT
R6
8
7
R
688
24V
S5V
S3.3V
S5V
R99
F99
Main Board
TNR Contact Board
1st use
Board
Fuse cut block
Toner type detection block
Q610
R691
R692
R6
8
9
Q6
0
8
Q613
R694
R6
9
3
D601
CN508
1
5
Q614
R6
9
5
R696
R6
9
7
CN80
1
5
A
C6
0
1
Q609
R6
9
0
TNRFUSECUT
Summary of Contents for KX-MB2230JT
Page 65: ...65 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 135: ...135 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 136: ...136 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2270 ...
Page 137: ...137 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 138: ...138 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2575 ...
Page 139: ...139 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 140: ...140 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 141: ...141 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT DP MB310JT ...
Page 142: ...142 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 143: ...143 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 144: ...144 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2515 ...
Page 145: ...145 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 146: ...146 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2545 ...
Page 147: ...147 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 153: ...153 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2270 ...
Page 154: ...154 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2575 ...
Page 155: ...155 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT DP MB310JT ...
Page 156: ...156 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT KX MB2515 ...
Page 194: ...194 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 7 3 Skew ...
Page 200: ...200 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 8 2 Skew ADF ...
Page 212: ...212 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 214: ...214 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 219: ...219 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 220: ...220 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 234: ...234 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 12 3 15 2 FB Motor ...
Page 241: ...241 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 2 CHG GRID ...
Page 242: ...242 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 TRA ...
Page 243: ...243 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 3 DEV DC ...
Page 244: ...244 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT TRA ...
Page 247: ...247 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 274: ...274 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 287: ...287 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 293: ...293 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 294: ...294 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 295: ...295 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 296: ...296 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT ...
Page 325: ...325 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT 15 6 1 NG Example ...
Page 342: ...342 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...
Page 356: ...356 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...
Page 370: ...370 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...
Page 384: ...384 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...
Page 398: ...398 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...
Page 437: ...437 KX MB2230JT KX MB2270JT KX MB2515JT KX MB2545JT KX MB2575JT DP MB310JT Memo ...