AR-F12 (serv.man8). Maintenance, inspection and troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 13

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8-8
CHAPTER 8   TROUBLESHOOTING
3) Press SW1 on the finisher controller PCB.
Pressing this switch lights LED1 on the fin-
isher controller PCB as indicated in Table
7-104 so that you can check the sensitivity
level of the transmission sensor.
Sensitivity Level
Number of
lit LEDs
Sensor not dirty
Lit 1X
Sensor slightly dirty
Lit 2X
Sensor dirty
Lit 3X
Table 8-104
4) Set all bits of DIPSW3 to OFF.
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