Document NO. M-7E-EM-English
PAGE
Page 17 of 25
Engineer Manual-Trouble Shooting
VERSION
B
2.3.
Speed sensor check:
2.3.1.Check all connect certainty.
Step
illustrate
Auxiliary Photo
1
Check the connector connection with
interface PCB certainly.
2
Check connector internal PINs, it shall
not be draw back.
2.3.2.Check outward completely and function normal.
Step
illustrate
Auxiliary Photo
1
To check the wire, it shall not be crush
injuries or breakage.
2
To turn around the front roller till the
magnet close to the speed sensor, then
measure the wire PINs by multi-meter.
It shall be have low resistance in the
normal condition.(short condition)
3
To turn around the front roller till the
magnet leave away from the speed sensor,
then measure the wire PINs by multi-meter.
It shall be have infinity resistance in the
normal condition.(open condition)