Panasonic KX-FLB803SA Service Manual ▷ View online
49
KX-FLB803SA
6.13. 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.87).
(#815 of Service Mode test. Refer to TEST FUNCTIONS (P.87).
6.13.1. DRUM SENSOR
This Switch detects whether the DRUM unit is set or not.
When there is the unit, the input signal of IC600-M18pin becomes low level.
When there is not the unit, the input signal of IC600-M18pin becomes high level.
When there is the unit, the input signal of IC600-M18pin becomes low level.
When there is not the unit, the input signal of IC600-M18pin becomes high level.
Sensor Name
Sensor Location
Reference number
Message Error
Drum sensor
Sensor PCB
SW2
[CHECK DRUM]
Paper sensor
Sensor PCB
SW3
[OUT OF PAPER INPUT TRAY #1]
Pickup sensor
Sensor PCB
SW4
Exit sensor
Thermistor PCB
PS5
[PAPER JAMMED]
Home sensor
FB Transit PCB
PS51
[CARRIAGE ERROR]
Read position sensor
Sensor PCB
PS2
[CHECK DOCUMENT]
Registration & Manual paper sen-
sor
sor
Sensor PCB
PS4
[PAPER JAMMED]
Print timing sensor
Sensor PCB
PS3
[PAPER JAMMED]
Document sensor
Sensor PCB
PS1
-
ADF cover sensor
Sensor PCB
SW1
[CLOSE ADF COVER]
Top cover sensor
H.V.P.S
SW1
[TOP COVER OPEN]
Toner sensor
Sensor PCB
IC40
[TONER EMPTY]
[TONER LOW]
[CHECK DRUM]
[TONER LOW]
[CHECK DRUM]
Option handset hook switch
Op handset PCB
SW940
-
Signal (IC600-M18pin)
Drum Set
Low level
No Drum
High level
50
KX-FLB803SA
6.13.2. PAPER SENSOR
This Switch detects whether there are recording papers in the paper tray #1 or not.
When there are recording papers in the tray, the input signal of IC600-N16pin becomes low level.
When there no recording papers in the tray, the input signal of IC600-N16pin becomes high level.
When there are recording papers in the tray, the input signal of IC600-N16pin becomes low level.
When there no recording papers in the tray, the input signal of IC600-N16pin becomes high level.
6.13.3. PICKUP SENSOR
This Switch detects whether a recording paper is picked up or not.
When there is a recording paper at the position of the switch, the input signal of IC604-96pin becomes low level.
When there is no recording paper at the position of the switch, the input signal of IC604-96pin becomes high level.
When there is a recording paper at the position of the switch, the input signal of IC604-96pin becomes low level.
When there is no recording paper at the position of the switch, the input signal of IC604-96pin becomes high level.
Signal (IC600-N16pin)
Paper exist
Low level
No papers
High level
Signal (IC604-96pin)
A paper exists
Low level
No papers
High level
51
KX-FLB803SA
6.13.4. 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 IC604-27pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC604-27pin becomes high level.
When there is a recording paper at the position of the sensor, the input signal of IC604-27pin becomes low level.
When there is no recording paper at the position of the sensor, the input signal of IC604-27pin becomes high level.
6.13.5. HOME SENSOR
This sensor detects whether the carriage is at it's home position or not.
When the carriage is at it's home position, a shelter plate closes the sensor light.
So the photo-transistor turns off and the input signal of IC604-110pin becomes high level.
When the carriage is not at it's home position, a shelter plate lets the sensor light pass.
So the photo-transistor turns on and the input signal of IC604-110pin becomes low level.
When the carriage is at it's home position, a shelter plate closes the sensor light.
So the photo-transistor turns off and the input signal of IC604-110pin becomes high level.
When the carriage is not at it's home position, a shelter plate lets the sensor light pass.
So the photo-transistor turns on and the input signal of IC604-110pin becomes low level.
Signal (IC604-27pin)
A paper exists
Low level
No papers
High level
Photo-transistor
Signal (IC604-110pin)
A carriage is at home.
OFF
High level
A carriage is not at home. ON
Low level
52
KX-FLB803SA
6.13.6. READ POSITION SENSOR
This sensor detects the front edge of the document.
When the front edge of the document is detected, the shelter plate closes the sensor light.
So the photo-transistor turns off and the input signal of IC604-111pin becomes high level.
When the front edge of the document is not detected, the shelter plate lets the sensor light pass.
So the photo-transistor turns on and the input signal of IC604-111pin becomes low level.
When the front edge of the document is detected, the shelter plate closes the sensor light.
So the photo-transistor turns off and the input signal of IC604-111pin becomes high level.
When the front edge of the document is not detected, the shelter plate lets the sensor light pass.
So the photo-transistor turns on and the input signal of IC604-111pin becomes low level.
6.13.7. 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 IC604-112pin 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 IC604-112pin 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 IC604-112pin 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 IC604-112pin becomes high level.
Photo-transistor
Signal (IC604-111pin)
A document exits
OFF
High level
No document
ON
Low level
Photo-transistor
Signal (IC604-112pin)
Paper exits
ON
Low level
No paper
OFF
High level
Click on the first or last page to see other KX-FLB803SA service manuals if exist.