Panasonic KX-FLM663RU Service Manual ▷ View online
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KX-FLM663RU
6.10. LSU (Laser Scanning Unit) SECTION
Note:
Do not disassemble the LSU (Laser Scanning Unit).
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6.11. 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.80).
(#815 of Service Mode test. Refer to TEST FUNCTIONS (P.80).
6.11.1. HOOK SWITCH
When the handset is raised, the switch is turned OFF, and the signal at pin U24 of IC300 is high.
When the handset is returned, the switch is turned ON, and the signal at pin U24 of IC300 is low.
When the handset is returned, the switch is turned ON, and the signal at pin U24 of IC300 is low.
6.11.2. DRUM SENSOR
The Switch detects whether the OPC unit is set or not.
When there is the DRUM unit, the input signal of IC300-AF21pin becomes a high level.
When there is no DRUM unit, the input signal of IC300-AF21pin becomes a low level.
When there is the DRUM unit, the input signal of IC300-AF21pin becomes a high level.
When there is no DRUM unit, the input signal of IC300-AF21pin becomes a low level.
Sensor Circuit Location
Sensor
Sensor or Switch Name
Message Error
Operation Panel
PS101
Document set
[CHECK DOCUMENT]
Operation Panel
SW146
Paper Feed
[REMOVE DOCUMENT]
High Voltage PCB
SW101
Printer Open
[COVER OPEN]
Toner Sensor PCB
SW1
OPC Set
[CHECK DRUM]
Paper Regist Sensor PCB PS2
Register
[FAILED PICKUP]
Paper Regist Sensor PCB PS3
Paper
[OUT OF PAPER]
Exit Sensor PCB
PS1
Exit
[PAPER JAMMED]
Toner Sensor PCB
SW1,IC1
Dev & Toner Set
[TONER EMPTY]
[TONER LOW]
[CHECK DRUM]
[TONER LOW]
[CHECK DRUM]
Handset PCB
SW2
Hook
————
Signal (IC300-AF21 pin)
DRUM Set
High level
No DRUM
Low level
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6.11.3. 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.
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.
6.11.4. PAPER FEED SENSOR
The Sensor detects the front edge of the document.
When a document is detected, the switch turns ON, and the input signal of IC300-AD22pin becomes a low level. When there is no
document, the switch turns OFF, and the input signal of IC300-AD22pin becomes a high level.
When a document is detected, the switch turns ON, and the input signal of IC300-AD22pin becomes a low level. When there is no
document, the switch turns OFF, and the input signal of IC300-AD22pin becomes a high level.
Signal (IC300-AD20pin)
A paper exists
Low level
No papers
High level
Switch
Signal (IC300-AD22pin)
Read Position
ON
Low level
Non Read Position
OFF
High level
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