Panasonic KX-MB1536RUB Service Manual ▷ View online
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KX-MB1536RU
6.11. Sensors and Switches Section
All of the sensors and switches are shown below.
Note:
See TEST FUNCTIONS - SENSOR CHECK SECTION for the sensor test.
(#815 of Service Mode test. Refer to Test Functions (P.92).)
Sensor Name
Sensor Location
Reference number
Message Error
Pick up & Resist & Manual
paper sensor
paper sensor
Interlock Board
IC51
[PAPER JAMMED]
[OPEN FRONT COVER]
[OPEN REAR COVER]
[CHECK PAPER]
[OPEN FRONT COVER]
[OPEN REAR COVER]
[CHECK PAPER]
Print timing sensor
Interlock Board
IC50
[PAPER JAMMED]
[OPEN FRONT COVER]
[OPEN REAR COVER]
[OPEN FRONT COVER]
[OPEN REAR COVER]
Exit sensor
LAN Board
IC52
[PAPER JAMMED]
[OPEN FRONT COVER]
[OPEN REAR COVER]
[OPEN FRONT COVER]
[OPEN REAR COVER]
Interlock switch
Interlock Board
SW50,SW51
[FRONT COVER OPEN]
Toner sensor
Toner Sensor Board
IC53
[TONER EMPTY]
[TONER LOW]
[CHANGE CARTRIDGE]
[TONER LOW]
[CHANGE CARTRIDGE]
Document sensor
ADF Board
IC55
[REMOVE DOCUMENT]
Read position sensor
ADF Board
IC54
[REMOVE DOCUMENT]
Print timing sensor
Pick up & Resist &
Manual paper sensor
Exit sensor
Read position sensor
(Front side: Operation panel)
Document sensor
Paper path
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KX-MB1536RU
6.11.1.
Pick Up & Resist & Manual Paper Sensor
This sensor detects whether a recording paper is picked up or not.
When there is a recording paper at the position of the sensor, the input signal of IC300-AF22pin becomes high level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AF22pin becomes low level.
When there is a recording paper at the position of the sensor, the input signal of IC300-AF22pin becomes high level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AF22pin becomes low level.
6.11.2.
Print Timing Sensor
This sensor detects whether a recording paper is at the printing position.
When there is a recording paper at the position of the sensor, the input signal of IC300-AA25pin becomes high level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AA25pin becomes low level.
When there is a recording paper at the position of the sensor, the input signal of IC300-AA25pin becomes high level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AA25pin becomes low level.
Signal (IC300-AF22pin)
A paper exists
High level
No papers
Low level
Signal (IC300-AA25pin)
A paper exists
High level
No papers
Low level
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KX-MB1536RU
6.11.3.
Exit Sensor
This sensor detects whether a recording paper exits or not.
When there is a recording paper at the position of the sensor, the input signal of IC300-AF23pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AF23pin becomes high level.
When there is a recording paper at the position of the sensor, the input signal of IC300-AF23pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AF23pin becomes high level.
6.11.4.
Interlock Switch
The switches detect whether the front cover is open or close.
When the front cover is close, the both switches turn ON, and the input signal of IC300-AA24pin becomes Low level.
When the front cover is open, the both switches turn OFF, and the input signal of IC300-AA24pin becomes High level.
When the front cover is close, the both switches turn ON, and the input signal of IC300-AA24pin becomes Low level.
When the front cover is open, the both switches turn OFF, and the input signal of IC300-AA24pin becomes High level.
Signal (IC300-AF23pin)
No papers
High level
A paper exists
Low level
Switch
Signal (IC300-AA24pin)
Open
OFF
High level
Close
ON
Low level
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KX-MB1536RU
6.11.5.
Toner Sensor
This sensor detects whether toner is present.
If the time of IC300-AC25pin's Low level is under 0.4s, there is enough toner in Drum cartridge, if not, toner is near empty.
If the time of IC300-AC25pin's Low level is under 0.4s, there is enough toner in Drum cartridge, if not, toner is near empty.
Toner Sensor
The rest of toner is detected by the move speed of the magnet put on the pendulum of Mixing Paddle. The pendulum is pushed
up by the Mixing Paddle, then it falls down by its own weight. The rotation speed of paddle is set slower than the one of pendu-
lum which falls down by its own weight. When the toner is still left, the pendulum falls and stops on the toner, then pushed by the
paddle, it starts to rotate. When no toner is left, the pendulum falls to the bottom. Consequently the contact time between the
magnet and Magnetic Field sensor IC becomes short when toner is left and long with no toner.
up by the Mixing Paddle, then it falls down by its own weight. The rotation speed of paddle is set slower than the one of pendu-
lum which falls down by its own weight. When the toner is still left, the pendulum falls and stops on the toner, then pushed by the
paddle, it starts to rotate. When no toner is left, the pendulum falls to the bottom. Consequently the contact time between the
magnet and Magnetic Field sensor IC becomes short when toner is left and long with no toner.
State
Display
Signal (IC300-AC25pin)
Toner full
-
Low level<0.4s
Near Empty Toner
TONER LOW
Low level>0.4s
Mixing Paddle does not rotate
CHANGE CARTRIDGE
High or Low level fix>2.7s (=2 rotations)
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