Brother Z-8550A User Manuals

Table of Contents

• SAFETY INSTRUCTIONS

  3
  • [1] Safety indications and their meanings

    3
  • [2] Notes on safety

    4
  • [3] Warning labels

    6
• 1. MACHINE SPECIFICATIONS

  10
• 2. SEWING PATTERN

  11
• 3. FUNCTION SETTINGS

  12
  • 3-1. Setting memory switches

    12
  • 3-2. List of memory switch settings

    13
  • 3-3. Data initialization

    23
    • 3-3-1. Resetting the settings to their defaults

      23
    • 3-3-2. When data is initialized automatically

      25
  • 3-4. Error history checking method

    26
    • 3-4-1. Error history checking method

      26
    • 3-4-2. Error history display examples

      27
  • 3-5. Software version checking method

    27
    • 3-5-1. Version update checking method

      27
  • 3-6. Checking input and output

    28
    • 3-6-1. Input and output checking method

      28
    • 3-6-2. Input and output check list

      28
  • 3-7. DIP switch setting method

    30
  • 3-8. Needle zigzag home position adjustment procedure

    31
• 4. USING CF CARDS

  32
  • 4-1. Precautions when handling CF cards (commercially available)

    32
  • 4-2. Structure of a CF card folder

    32
  • 4-3. Preparation for reading/writing data

    33
  • 4-4. Reading additional sewing data into the sewing machine

    34
  • 4-5. Writing additional sewing data to CF cards

    35
  • 4-6. Reading memory switch data into the sewing machine

    36
  • 4-7. Writing memory switch data to a CF card

    37
  • 4-8. Updating the control program version

    38
    • 4-8-1. Control program version updating procedure

      38
    • 4-8-2. Restoring the control program if an error occurs during version updating

      39
  • 4-9. Writing error log data to CF cards

    40
• 5. MECHANICAL DESCRIPTIONS

  41
  • 5-1. Needle bar and thread take-up mechanisms

    41
  • 5-2. Lower shaft and shuttle race mechanisms

    42
  • 5-3. Zigzag mechanism

    43
  • 5-4. Presser foot mechanism

    44
  • 5-5. Feed mechanism

    46
  • 5-6. Lubrication mechanism

    49
  • 5-7. Thread trimmer mechanism (8560A only)

    51
  • 5-8. Tension release mechanism

    52
  • 5-9. Thread wiper mechanism (8560A only, optional device)

    54
• 6. DISASSEMBLY

  55
  • 6-1. Covers

    56
  • 6-2. Presser foot mechanism

    57
  • 6-3. Needle bar mechanism

    57
  • 6-4. Zigzag mechanism

    58
  • 6-5. Rotary hook mechanism

    60
  • 6-6. Lubrication mechanism

    61
  • 6-7. Feed mechanism

    61
  • 6-8. Thread trimmer mechanism (8560A only)

    62
  • 6-9. Thread wiper mechanism (8560A only, optional device)

    63
• 7. ASSEMBLY

  64
  • 7-1. Thread wiper mechanism (8560A only)

    64
  • 7-2. Feed mechanism

    65
  • 7-3. Lubrication mechanism

    66
  • 7-4. Zigzag mechanism

    67
  • 7-5. Needle bar mechanism

    68
  • 7-6. Rotary hook mechanism

    69
  • 7-7. Presser foot mechanism

    70
  • 7-8. Covers

    71
  • 7-9. Thread wiper mechanism (8560A only, optional device)

    72
• 8. CHANGING THE FEED AMOUNT TO LONG STITCH

  73
• 9. ADJUSTMENTS

  76
  • 9-1. Actuator position

    76
  • 9-2. Adjusting the safety switch position

    77
  • 9-3. Thread tension spring

    78
  • 9-4. Presser foot height

    79
  • 9-5. Feed dog height

    79
  • 9-6. Feed dog angle

    80
  • 9-7. Feed dog forward/back and sideways position

    80
  • 9-8. Feed amounts for reverse stitching and condense stitching

    81
  • 9-9. Needle and feed timing

    81
  • 9-10. Needle bar height

    82
  • 9-11. Needle zigzag forward/back position

    83
  • 9-12. Needle zigzag sideways position

    84
  • 9-13. Needle zigzag load

    85
  • 9-14. Needle and rotary hook timing

    85
  • 9-15. Bobbin case holder bracket position

    86
  • 9-16. Adjusting the rotary hook lubrication amount

    87
  • 9-17. Adjusting the presser foot floating amount (minute lifting amount)

    88
  • 9-18. Adjusting the treadle

    88
  • 9-19. Adjusting the quick reverse device (8550A-A31, 8560A)

    89
  • 9-20. Adjusting the tension release during thread trimming (8560A only)

    90
  • 9-21. Adjusting the position of the thread trimming cam (8560A only)

    91
  • 9-22. Adjusting the tension of the plate spring (8560A only)

    92
  • 9-23. Adjusting the thread trailing length after thread trimming (8560A only)

    92
  • 9-24. Adjusting the thread wiper (8560A only, optional device)

    93
• 10. APPLYING GREASE (When “GrEASEUP” appears)

  94
  • 10-1. To continue sewing temporarily without applying grease

    94
  • 10-2. Applying grease

    95
  • 10-3. Resetting the cumulative operating time

    96
• 11. ELECTRICAL MECHANISM

  97
  • 11-1. Precautions while carrying out adjustments

    97
  • 11-2. Control box internal configuration

    98
  • 11-3. Description of fuses

    99
    • 11-3-1. Power supply P.C. board (fuses and fuse resistors)

      99
    • 11-3-2. Main P.C. board (fuses and fuse resistors)

      100
  • 11-4. Description of connectors

    101
    • 11-4-1. Connector positions

      101
  • 11-5. Troubleshooting

    103
    • 11-5-1. Troubleshooting procedure

      103
    • 11-5-2. Diagnosis flowchart

      104
    • 11-5-3. Remedy

      106
  • 11-6. Wiring diagrams

    110
• 12. TREADLE UNIT

  112
  • 12-1. Types

    112
  • 12-2. Standard setting values

    113
  • 12-3. Standard settings for treadle depression stroke

    114
• 13. STANDING OPERATION PEDAL

  116
  • 13-1. Installing the foot plug

    116
  • 13-2. Connectors

    117
• 14. TROUBLESHOOTING

  118
• 15. ERROR CODES

  123
• 16. SEGMENT DISPLAY DEFINITION TABLE

  126