Singer Futura Quartet FQ-4 Service Manual page 44

Name of al
No.
code
Trouble of X
7 axis motor of
hoop H.P.
Trouble of Y
8
axis motor of
hoop H.P.
9 nil
Problem in
10
Cam1 signal
Problem in
11
Cam2 signal
Problem in
12
Cam3 signal
Problem in
13
B.H. lever
signal
44 Singer Futura XL-400 , FQ-4
W a y f o d e e t t c
HP signal is not turn to "ON" at initial movement
of hoop when turning on main power.
HP signal is not turn to "OFF" at initial movement
of hoop when turning on main power.
HP signal is not turn to "ON" at initial movement
of hoop when turning on main power.
HP signal is not turn to "OFF" at initial movement
of hoop when turning on main power.
Signal of Cam1 is not inputted while main axis
motor is operating.
Signal of Cam2 is not inputted while main axis
motor is operating.
Signal of Cam3 is not inputted while main axis
motor is operating.
Both signal of forward sensor and signal of
backward sensor are "ON" at same time when
turned on the sewing machine.
Both signal of forward sensor and signal of
backward sensor are "ON" at same time while
sewing is in practice.
Nil
S l o t u o i n
Replace switch of
stepping motor is
needed.
Replace switch of
stepping motor is
needed.
Replace switch of
stepping motor is
needed.
Replace switch of
stepping motor is
needed.
Replace cam sensor is
needed.
Replace cam sensor is
needed.
Replace cam sensor is
needed.
Replace sensor board
at BH is needed. If
trouble is not solved
after replacement of
sensor board, CPU
board is needed to be
replaced.
Replace sensor board
at BH is needed. If
trouble is not solved
after replacement of
sensor board, CPU
board is needed to be
replaced.