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Inspection and

Adjustment

Inspection and

Adjustment

Test mode Starting test mode

1. Starting test mode

Turn on the power while pressing the [Start/Stop] button, [Thread trimming]

button and the [Automatic needle-threading] button.

2. Selecting test mode

1) Press the button on the screen, and select the test mode.

MAIN / PANEL BOARD TEST MODE

SELECTION SCREEN

MAIN BOARD TEST MODE

SELECTION SCREEN

PANEL BOARD TEST MODE

SELECTION SCREEN

Main Mechanisms13
Driveline14
Positions of Electronic Components16
Control System Block Diagram18
Layout for P.C.B. Connectors19
Operation of Other Electronic Components21
Disassembly22
Main Parts27
Needle Thread Unit49
Needle Thread Assembly Removal50
Hook Holder Assembly Removal51
TH Motor Assembly Removal52
Needle Bar Change Unit53
Change Box Center Cover Removal54
Change Box Disassembly (Step 1)55
Change Box Disassembly (Step 2)56
Thread Wiper Unit57
LED Unit Left Assy Removal58
Wiper Set Assembly Removal59
Wiper Set Disassembly60
Needle Bar Unit61
LED Unit Left Assy Disassembly62
LED Cord Guide Removal63
Thread Take-Up Lever Assembly Removal64
Needle Bar Removal65
Case Positioning Plate Assembly Removal66
Case Bracket Assembly Removal67
Case Bracket Disassembly68
Upper Shaft Unit69
Main Motor Final Assembly Removal70
Main Motor Disassembly71
Driving Jump Disassembly72
Base Needle Bar Removal73
Presser Foot Vertical Base Disassembly74
Thread Take-Up Driving Lever Disassembly75
Main Shaft Sensor Final Assembly Removal76
Pressure Foot Driving Shaft Assembly Removal77
Upper Shaft Assembly Removal78
Lower Shaft Unit79
Arm Bed and Base Frame Disconnection80
Lower Shaft Removal81
Power Unit82
Power Switch Assembly and Inlet Removal83
Adjust-Bolt Removal84
Thread Cut Unit85
Picker Disassembly86
Cutter Unit Disassembly (Step 1)87
Cutter Unit Disassembly (Step 2)88
Thread Tension Unit89
Loosen the Tension Nut Removal90
Inner Thread Eyelet Base Removal91
Upper Thread Eyelet Base Removal92
Antenna Disassembly93
Spool Stand Frame Disassembly (Step 1)94
Thread Take-Up Lever Cover Disassembly (Step 1)95
Thread Take-Up Lever Cover Disassembly (Step 2)96
Thread Take-Up Bracket Disassembly97
Operation Panel98
Operation Panel Lever Assembly Removal99
Panel Holder Removal100
Panel Rear Cover Removal101
Card Cover Removal102
Panel PCB Case Removal103
Board Supporter Removal104
LCD Supply Assy Disassembly105
SS PCB Assy Removal106
Assembly107
Operation Panel108
Speaker Set Attachment109
Attachment of LCD Supply Assy110
Board Supporter Attachment111
Panel PCB Case Attachment112
Pen Holder Attachment113
Panel Rear Cover Attachment114
Operation Panel Lever a Attachment115
Operation Panel Lever Assembly Attachment116
Thread Tension Unit117
Thread Take-Up Bracket Assembly118
Thread Take-Up Lever Cover Assembly (Step 1)119
Thread Take-Up Lever Cover Assembly (Step 2)120
Spool Stand Frame Assembly (Step 1)121
Antenna Assembly (Step 1)122
Antenna Assembly Attachment123
Thread Sensor Assembly and Head PCB Assembly Attachment124
Inner Thread Eyelet Base Attachment125
Tension Base Lead Wire Assembly Attachment126
Tension Nut Attachment127
Thread Cut Unit128
Cutter Unit Assembly (Step 1)129
Cutter Unit Assembly (Step 2)130
Picker Assembly131
Power Unit132
Adjust Bolt Attachment133
Power Supply Unit Attachment134
EX Connector Holder Attachment135
Lower Shaft Unit136
Lower Shaft Attachment137
Idle Pulley Assembly138
Connection of Arm Bed and Base Frame139
Upper Shaft Unit140
Upper Shaft Assembly141
Upper Shaft Assembly Attachment142
Presser Foot Driving Shaft Assembly143
Presser Foot Driving Shaft Assembly Attachment144
Crank Rod Assembly Attachment145
Main Shaft Sensor Final Assembly Attachment146
Thread Take-Up Driving Lever Final Assembly147
Thread Take-Up Driving Lever Final Assembly Attachment148
Vertical Set Assembly149
Base Needle Bar Attachment150
Driving Jump Assembly (1)151
Driving Jump Assembly (2)152
Driving Jump Assembly Attachment153
Main Motor Final Assembly154
Needle Bar Unit155
Case Guide UL Assembly156
Case Bracket Assembly157
Case Bracket Assembly Attachment158
Case Positioning Plate Assembly159
Needle Bar Attachment160
Thread Take-Up Lever Assembly161
Thread Take-Up Lever Assembly Attachment162
Case Guide D Attachment163
Needle Bar Case Final Assembly Attachment164
LED Cord Guide Attachment165
LED Unit Left Assy Assembly166
Thread Wiper Unit167
Wiper Set Assembly168
Wiper Guide and Wiper Sensor Attachment169
Wiper Set Assembly Attachment170
Thread Presser Base Assembly171
Needle Bar Change Unit172
Change Box Assembly (Step 1)173
Change Box Assembly (Step 2)174
Change Box Assembly (Step 3)175
Change Box Center Cover Attachment176
Needle Thread Unit177
TH Motor Assembly Attachment178
Hook Assembly179
Needle Thread Assembly Attachment180
Feed Unit181
Connect PCB Final Assembly182
Y-Carriage L Assembly183
Feed Frame Assembly184
T-Belt (Y-Drive) Attachment185
X-Guide Shaft Attachment186
Hoop Sensor Attachment187
X-Sensor Dog Attachment188
X-Carriage a Assembly and X-Carriage B Assembly Attachment189
X-Feed Frame B Attachment190
Y-Frame Spacer and X-Belt Presser Attachment191
Cord Grip Attachment192
Y Driving Shaft Assembly Attachment193
Y Motor Final Assembly Attachment194
Feed Final Assembly Attachment195
T-Belt (Y-Guide) Attachment196
Main Unit197
Cutter Unit Final Assembly and Picker Final Assembly Attachment198
Rotary Hook Attachment199
Needle Plate Base Assembly200
Needle Plate Base Assembly Attachment201
Tension Base Attachment202
Thread Take-Up Lever Cover Attachment203
Operation Panel Assembly Attachment204
Board Holder U/D Attachment205
Main PCB Assembly Attachment206
LED PCB Plate Attachment207
Base Cover R Attachment208
Arm Cover L Attachment209
Arm Cover R Attachment210
Bed Cover Attachment211
Motor Cover / Carriage Cover Attachment212
Adjustment213
Needle Point Damage214
Starting Test Mode215
Input Needle Bar Data for Adjustment225
Motor Belt Tension227
Timing Belt Tension228
Needle Drop (Front/Back)229
Needle Position (Left/Right)231
Needle Bar Rising and Needle Clearance232
Needle Bar Height234
Rotary Hook Stopper Clearance236
Presser Foot Height237
Needle Bar Top Dead Center238
Needle Threader (Up/Down)239
Needle Threader (Left/Right)241
Y Belt Tension242
X Belt Tension243
Picker Activation244
Movable Knife Initial Position245
Thread Presser Base Up/Down Position246
Hoop Sensor (A/D Value)247
Upper Shaft Encoder Phase249
X, y Carriage Initial Position250
Movable Knife and Fixed Knife Engagement Load251
Movable Knife and Fixed Knife Pre-Conditioning252
LED Pointer Position253
Failure Investigation for Electronic Parts256
Error Message List257
The Power Is Not Turned on258
The Touch Panel Does Not Work261
The Panel Switch Does Not Work262
The Needle Bar Does Not Move Normally263
Thread Breakage Detection Does Not Function Normally264
The Hoop Does Not Move Normally265
The Main Shaft Does Not Rotate Normally267
Thread Is Not Cut Normally269
The Wiper Does Not Function Normally270
A Needle Is Not Threaded Normally271
The Picker Does Not Function Normally272
LED Light Does Not Turn on273
USB Function and USB Media Cannot be Used Normally274
The Hoop Sensor Does Not Function Normally275
Sound Does Not Work278
LED Pointer Does Not Light279
Cannot Upgrade Software280
Error Message282
Replacement of Main PCB Assy or Panel PCB Assy287
Correspondence Table of "Model" and "Printed-Circuit Board"288
Maintenance & Replacement289
How to Reset the Counter of the Maintenance290
Necessary Grease & Oil291
Maintenance Point (Every 1,500 Hours)292
Maintenance Point (Every 500 Hours)298
Maintenance Point (Every Day)299
Replacement Parts Location300
Main PCB Assy301
Power Supply PCB Unit304
Main Motor Assy305
Panel PCB and LCD Module308
Head Unit310
Hook Holder311
Sub Tension Assy312
Special Instructions of Wiring313

Number of Needles	6
Built-in Designs	25
USB Port	Yes
LCD Display	Yes
Type	Embroidery Machine
Built-in Fonts	28
Maximum Speed	1000 stitches per minute
Embroidery Area	300mm x 200mm

Brother PR655 Service Manual

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