rotai RT-7900S - Page 9

legrest
power
legrest
recliner
backrest
recliner
left
armrest
button
3D COMM
signal
legrest
COMM
signal
user
connecting
PCB
5V
power
signal
backrest
recliner hall
signal
legrest
recliner
counting
signal
walking
motor
distance
signal
right
armrest air
valve
left
armrest
air valve
seat air
valve
armres
t
chargin
g
power
AC19V air
valve power
legrest
air
pump
armre
st air
pump
AC2
1V
3D
vertic
al
motor
knead
ing
motor
tappin
g
motor
back
heatin
g
walkin
g
motor
APP signal
back heat
sensing
program
update
forwarding
cylinder
Forward
cylinder
distance
signal
backrest
recliner
counting
signal
audio
signal
Maintenance Guide - Inner structure & installation
2.1. Mainboard Diagram