Panasonic KX-MB763RU (serv.man5) Service Manual ▷ View online
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KX-MB763RU-B
6.12. SENSORS AND SWITCHES SECTION
All of the sensor 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.79).
(#815 of Service Mode test. Refer to TEST FUNCTIONS (P.79).
Sensor Name
Sensor Location
Reference number
Message Error
Pickup sensor
Pickup & Fan2 PCB
SW50
[PAPER JAMMED] [CHECK REAR CVR]
[WRONG PAPER & PRESS START]
[WRONG PAPER & PRESS START]
Exit sensor
Fuser PCB
PS50
[PAPER JAMMED]
Resistance& Manual paper sensor Resist & PTOP PCB
PS51
[PAPER JAMMED]
Print timing sensor
Resist & PTOP PCB
PS52
[PAPER JAMMED]
Top cover sensor
H.V.P.S
SW1
[TOP COVER OPEN]
Toner sensor
Sensor PCB
IC50
[TONER EMPTY]
[TONER LOW]
[CHECK DRUM]
[TONER LOW]
[CHECK DRUM]
Option handset hook switch
Op handset PCB
SW940
-
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KX-MB763RU-B
6.12.1. DRUM DETECTION
DRUM SENSOR is not arranged.
DRUM unit is detected when HVERR SENSOR arranged in H.V.P.S becomes effective.
DRUM unit is detected when HVERR SENSOR arranged in H.V.P.S becomes effective.
6.12.2. PICKUP SENSOR
Paper SENSOR is not arranged.
Paper is detected when PICKUP SENSOR described as follows becomes effective.
This Switch detects whether a recording paper is picked up or not, and whether Rear Cover is opened or closed.
When there is a recording paper at the position of the switch, the input signal of IC300-AE20pin becomes low level.
When there is no recording paper at the position of the switch, the input signal of IC300-AE20pin becomes high level.
Paper is detected when PICKUP SENSOR described as follows becomes effective.
This Switch detects whether a recording paper is picked up or not, and whether Rear Cover is opened or closed.
When there is a recording paper at the position of the switch, the input signal of IC300-AE20pin becomes low level.
When there is no recording paper at the position of the switch, the input signal of IC300-AE20pin becomes high level.
High Voltage ERROR Status
Drum sensor
Signal (IC300-P26)
Abnormal
DRUM can not be detected Low level
Normal
DRUM can be detected
High level
Pickup status
Idling status
Signal (IC300-AE20pin)
A paper exists
Rear Cover opened
Low level
No papers
Rear Cover closed
High level
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KX-MB763RU-B
6.12.3. EXIT SENSOR
This sensor detects whether the recording paper exits or not.
When there is a recording paper at the position of the sensor, the input signal of IC300-AD20pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AD20pin becomes high level.
HOME SENSOR is not arranged.
Home position is detected by CIS finding the special bar code pattern back side of the FB cabinet.
When there is a recording paper at the position of the sensor, the input signal of IC300-AD20pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC300-AD20pin becomes high level.
HOME SENSOR is not arranged.
Home position is detected by CIS finding the special bar code pattern back side of the FB cabinet.
Signal (IC300-AD20pin)
A paper exists
Low level
No papers
High level
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KX-MB763RU-B
6.12.4. REGISTRATION & MANUAL PAPER SENSOR
This sensor detects whether the recording paper is at the sensor position.
When the recording paper is detected, the shelter plate lets the sensor light pass.
So the photo-transistor turns on, and input signal of IC300-AF20pin becomes low level.
When the recording paper is not detected, the shelter plate closes the sensor light.
So the photo-transistor turns off, and input signal of IC300-AF20pin becomes high level.
When the recording paper is detected, the shelter plate lets the sensor light pass.
So the photo-transistor turns on, and input signal of IC300-AF20pin becomes low level.
When the recording paper is not detected, the shelter plate closes the sensor light.
So the photo-transistor turns off, and input signal of IC300-AF20pin becomes high level.
6.12.5. PRINT TIMING SENSOR
This sensor detects whether the recording paper is at the printing position.
When the recording paper is detected, the shelter plate lets the sensor light pass.
So the photo-transistor turns on, and input signal of IC300-W26pin becomes low level.
When the recording paper is not detected, the shelter plate closes the sensor light.
So the photo-transistor turns off, and input signal of IC300-W26pin becomes high level.
When the recording paper is detected, the shelter plate lets the sensor light pass.
So the photo-transistor turns on, and input signal of IC300-W26pin becomes low level.
When the recording paper is not detected, the shelter plate closes the sensor light.
So the photo-transistor turns off, and input signal of IC300-W26pin becomes high level.
Photo-transistor
Signal (IC300-AF20pin)
Paper exists
ON
Low level
No paper
OFF
High level
Photo-transistor
Signal (IC300-113pin)
Paper exists
ON
Low level
No paper
OFF
High level
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