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3-11. SENSOR SECTION
(1) Check the read position sensor(PI301)
Check the voltage at pin 15 of IC301
Document set OV
No document 4~5V
OK
Replace IC301.
(2) Check the document sensor (PI302)
Check the voltage at pin 15 of IC301
Document set 4~5V
No document 0V
OK
Replace IC301.
(3) Check the cover open sensor(SW271)
Check the voltage at pin 31 of IC151
Open cover: 4~5V
Close cover: 0V
OK
Replace IC151.
NG
Check the soldering at R333.
When the pin
16 of IC301 is
low level.
NG
Check the soldering at R333.
When the pin
9 of IC301 is
low level.
NG
Check the soldering at R271.
OK
OK
OK
| 77 |
KX-F910BX
Check the soldering
at R331.
OK
Replace PI301.
Check the soldering
at R332.
OK
Replace PI302.
Check the soldering
at R272
OK
Replace SW271.
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