Brother Z-8550A Service Manual page 108

11. ELECTRICAL MECHANISM
Problem No. 4, 5, 6, 7
Cause
1. When [Err 200] is displayed:
• Needle zigzag motor cannot
move to home position
• Encoder cord of needle zigzag
motor is not connected.
2. When [Err 201] is displayed:
Problem with needle zigzag motor
or problem with sliding resistance
3. When [Err 202] is displayed:
Problem with home position
adjustment data for needle zigzag
motor
4. When [Err 711] is displayed:
Abnormal current detected in needle
zigzag motor
Problem No. 8, 9
Cause
1. When [Err 50] is displayed:
Sewing machine safety switch
operation detected
2. When [Err 130] is displayed:
Sewing machine motor does not
operate
Sewing machine motor operates but an error code is displayed when the treadle is depressed
Problem No. 10
forward.
Cause
When [Err 132] is displayed:
Problem with A phase encoder signal
of sewing machine motor
99
Needle bar does not move to the home position and an error code is displayed when the
power switch is turned on.
Inspection/Remedy/Adjustment
Check that connector P3 (ENC) is inserted into
the main P.C. board.
1) Check if there is too much or too little
needle zigzag sliding resistance. (Check if
there is variation in the load.)
2) Adjust the sliding resistance within the
range of 1.2 kgf to 1.5 kgf.
Check the home position adjustment.
(Replace the part(s) indicated at right.)
Sewing machine motor does not operate and an error code is displayed when treadle is
depressed forward.
Inspection/Remedy/Adjustment
Adjust the operation of the safety switch.
(Check the gap between the sewing machine
and the table.)
Check that the sewing machine motor cord is
inserted into the side of the control box.
Inspection/Remedy/Adjustment
(Replace the part(s) indicated at right.)
Z-8550A, 8560A
Replacement if a malfunction
Encoder P.C. board in needle
zigzag motor
-
-
PMD P.C. board
Replacement if a malfunction
-
Power supply P.C. board or
main P.C. board
Replacement if a malfunction
Motor or encoder P.C. board