Panasonic KX-FLB852CX Service Manual page 244

KX-FLB852CX / KX-FLB852CXS
7.12.14. MANUAL PAPER SENSOR
This sensor detects whether there are recording papers in the paper tray #2 or not.
When there are recording papers in the tray, the input signal of IC604-116pin becomes low level.
When there are no recording papers in the tray, the input signal of IC604-116pin becomes high level.
7.12.15. ADF COVER SENSOR
This switch detects whether ADF cover is opened or closed.
When ADF cover is opened, the input signal of IC604-117pin becomes high level.
When ADF cover is closed, the input signal of IC604-117pin becomes low level.
Photo-transistor
Paper exits
No paper
Cover open
Cover close
Signal (IC604-116pin)
OFF High level
ON Low level
Signal (IC604-117pin)
High level
Low level
244