Brother PE-180D Bedienungsanleitung
8. 2001.
• This service manual has been compiled for explaining the repair procedures for the PE-180D HOME
EMBROIDERY MACHINES.
• Use this service manual in conjunction with the Part List when you make a repair.
• This machine is manufactured based on product specifications which are current at the time of printing of this
manual. However, specifications are subject to change for improvement without notice, so contract the
manufacturer or your local sales agent for information regarding such changes.
Brother Industries, Ltd.
Nagoya, Japan
I. PRINCIPAL MECHANISMS....................................................................................2
II.DISASSEMBLY AND REASSEMBLY PROCEDURES..........................................8
III.ADJUSTMENT STANDARDS AND ADJUSTMENT PROCEDURES
FOR MECHANICAL PARTS.................................................................................13
IV.PROBLEM DIAGNOSIS PROCEDURES FOR THE ELECTRONIC
SYSTEMS.............................................................................................................34
- 1 -
Most processes in the manufacturer of LSI devices such as microprocessors involve MOS (metal oxide
semiconductor) technology. It is thus necessary to take extreme care to prevent erasure or other damage caused
by static electricity during the use and manufacture of products using such LSI devices.
This embroidery machine is manufactured and assembled under a strictly controlled system preventing such
damage.
Similar care is also required during the service and maintenance of this product.
Please be sure to observe the following.
1. Always wear rubber gloves when handling the circuit boards. Never touch metal components with your bare
hands.
2. Ground your body to prevent static charge build-up.
3. When storing and shipping circuit boards, always wrap the circuit board in the specified aluminum foil
wrapper or equivalent static-prevention bag, and protect the circuit board from physical shock.
4. During adjustment and repair, do not touch or damage the circuit board with a screwdriver or other tool, and
do not touch the circuit-side of the board.
• The following symbols are used in this service manual.
- 2 -
1.MECHANICAL CHART....................................................................................3
2.POWER TRANSMISSION ASSEMBLY (VERTICAL NEEDLE BAR
MOVEMENT,THREAD TAKE-UP MOVEMENT AND ROTARY
HOOK MOVEMENT)........................................................................................4
3.ELECTRONIC PARTSLAYOUT CHART........................................................5
4.CONTROL SYSTEM BLOCK DIAGRAM........................................................5
5.MAIN MOTOR CONTROL SYSTEM................................................................6
6.PATTERN GENERATOR.................................................................................6
7.OTHER ELECTRONIC COMPONENT FUNCTIONS......................................7
- 3 -
1. MECHANICAL CHART
- 4 -
2. POWER TRANSMISSION ASSEMBLY (VERTICAL NEEDLE BAR MOVEMENT,
THREAD TAKE-UP MOVEMENT AND ROTARY HOOK MOVEMENT)
Main motor
T pulley
Hand wheelUpper shaft gearMain shaft
Thread take-up
Cou
nt
e
r w
e
i
g
h
t
Timing belt
Rotary hook shaft pulley
Rotary hook
Needle
Needle bar
Needle bar clamp
Needle bar crank
r
od
Needle bar crank
Thread take-up
lever
Vertical shaft pulley
Vertical shaft
Vertical shaft gear
- 5 -
3. ELECTRONIC PARTS LAYOUT CHART
4. CONTROL SYSTEM BLOCK DIAGRAM
- 6 -
5. MAIN MOTOR CONTROL SYSTEM
The main motor must operate at a constant speed regardless of load fluctuations, temperature fluctuations, or
other changes in operating conditions. The main motor is therefore driven by means of PWM (Pulse Width
Modulation) control.
6. PATTERN GENERATOR
This embroidery machine stores the pattern data to memory, and drives the embroidery frame using the X and Y
pulse motors to produce the patterns. It is therefore possible to increase the number of stored patterns and the
total number of stitches by simply increasing the storage capacity of the embroidery machine.
Good positioning and response speed are also required of the pulse motors used in this machine because the
embroidery frame must be moved and stopped in a precise position while the need is up. A PM-type pulse motor
is therefore used with a simple open loop circuit configuration to drive the embroidery frame in this machine.
Pattern generator control block diagram
- 7 -
7. OTHER ELECTRONIC COMPONENT FUNCTIONS
Start/stop switch ...............................Used to start and stop machine operation. When starting, the embroidery
machine operates at low speed as long as the switch is pressed. The need
will stop in the up position if pressed immediately after the "Raise needle"
error message is displayed.
Touch panel .......................................Used to enter the pattern selection and other sewing conditions. The touch
panel replaces the conventional switches, and makes pattern selection
possible by simply touching the panel.
Presser switch...................................Detects whether the presser lever is up or down.
Rotation sensor.................................Detects the drive timing of the embroidery frame drive pulse motor and the
tension release solenoid and detects the vertical position of the needle. Also
detects the turning angle of the upper shaft by means of a photointerruptor
and shutter installed on the upper shaft.
Speed sensor.....................................Detects the operating speed of the main motor by means of a photointerruptor
and shutter installed on the upper shaft.
Bobbin winder switch.......................Detects whether the bobbin winder has been set when starting bobbin
winding.
Transformer .......................................Used for pulse motor and solenoid drive, sew light power and for the
electronic circuit power supply.
Work light...........................................Uses an 8-V, 2.4-W bulb to illuminate the presser foot area.
Tension release solenoid .................Opens the tension disc to prevent the needle thread from becoming
tangled when forming long crossover threads.
- 8 -
1.DISASSEMBLY AND REASSEMBLY PROCEDURES FOR EXTERNAL
PARTS AND MAJOR COMPONENTS........................................................... 9
2.SECURING THE LEADS................................................................................12
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