Bernina 780 Manuals

Manuals and User Guides for Bernina 780. We have 2 Bernina 780 manuals available for free PDF download: Service And Maintenance Manual

Bernina 780 Service And Maintenance Manual (172 pages)

Brand: Bernina | Category: Sewing Machine | Size: 17 MB

Table of Contents
2
Chapter 1 - General Information
6
Safety Regulations
6
Warning: Dangerous Voltage Levels
7
ESD-Related Note: Electrostatic Discharge (ESD)
8
Tools and Gauges
9
Handling Adjustments
13
Abbreviations / Names Used
13
Cleaning
13
Technical Details by Model
15
Chapter 2 - Electronics and Wiring
16
PCBA-Base - General Information
16
PCBA-Base (B780, B750, B710)
16
PCBA-CPU-Module (ARM9) - General Information
17
PCBA-CPU-Module / ARM9 (B780, B750, B710)
17
Pcba
18
PCBA Left Front Cover (B710, B750, B780)
18
PCBA Right Front Cover (B710, B750, B780)
19
PCBA-Power (B710, B750, B780)
20
PCBA-Threader (B710, B750, B780)
21
PCBA-Dual-Feed Sensor (B710, B750, B780)
21
PCBA-Position (B780, B750, B710)
21
Pcba-Ret (B780, B750, B710)
22
PCBA Feed-Dog Drop Detection (B780, B750, B710)
22
PCBA-Lower-Thread Sensor
23
PCBA-Accessories Connector
23
PCBA-Presser-Foot Height Sensor
23
Sensor Support ABC (Presser Foot Recognition)
24
Cable Harness
25
BERNINA 780 Block Diagram (B750 / B710)
26
Handling of Electronic Components
27
Returning Defective Electronic Components
27
Repairs of Electronic Components (Pcba's)
27
Chapter 3 - Removal and Refitting of Components
28
Covers
28
Head Cover
28
Rear Cover
28
Front Cover
29
Free Arm Cover
30
Free Arm Cover Plate
31
Base-Plate Cover
32
Belt Cover
33
Electronics and Sensors
34
Front Left and Front Right PCBA-Covers
34
Stitch-Length and Stitch-Width Adjusting Knobs
35
Winder Unit
35
Winder Motor
36
LC Display / Touchscreen
37
PCBA-RET / Rubber Key Pad / Ribbon Cable
38
PCBA-Base
39
PCBA-CPU-Module
41
EEPROM (Electrically Erasable Programmable Read-Only Memory)
42
Freearm LED Sewing Light
43
PCBA-Power Including PCBA Housing
44
PCBA-Power
45
Head Frame LED Sewing Light
46
Presser-Foot Height Sensor
47
PCBA-Threader
48
Sensor Support ABC (Presser-Foot Recognition Sensor)
48
PCBA-Dual Feed Sensor
49
PCBA-Accessories-Interface
49
Embroidery Module Interface (BERNINA 780 and 750)
50
PCBA-Lower-Thread-Sensor
51
Mechanical Components
52
Hook and Hook Driver
52
Thread-Cutter Unit
55
Thread-Tension Unit
56
Clutch Carriage
57
Threader Head
59
Needle Bar Support
60
Needle Bar
62
Needle Clamp
63
Threader Mechanism
64
Main Motor
65
Dual Feed
66
Thread Take-Up
67
Restraint Guided Advance Link Lever
68
Stitch-Length Crankshaft
70
Base Shaft
71
Stitch-Length Stepping Motor
72
Sideways-Motion Stepping Motor (B780)
73
Presser-Foot Pressure Stepping Motor
74
Stitch-Width Stepping Motor
75
Presser-Foot Pressure - Toothed Rack Bearing
76
Chapter 4 - Settings
77
Basics - General Information
77
Belt Tensions
78
Upper / Base Shaft Tension
78
Drive Motor
79
Head-Frame Plate Position
79
Position of Head-Frame Plate/Stitch Plate in y Direction
79
Position of Head Frame Plate/Stitch Plate in X-Direction
80
Presser-Foot Settings
80
Darning Foot Height
80
Presser-Foot Fixation
81
Needle Adjustment
82
Distance between Needle Bar and Presser-Foot Bar
82
Needle Distribution
83
Zigzag Stitch Width Limiter
84
Hook, Needle Drive and Feed-Dog Movement Synchronization
85
Feed-Dog Lift and Advance (Synchronization of Base Shaft and Main Shaft)
85
Loop Lift
86
Needle / Hook Distance
87
Needle Penetration in y Direction
87
Needle Height
88
Feed-Dog Settings
89
Position of Main Feed-Dog Within Stitch Plate in X Direction
89
Dual Feed: X-Direction Positioning against Main Feed-Dog
90
Main Feeding Balance - Mechanical Basic Setting
91
Dual Feed Balance - Basic Mechanical Setting
93
Main Feed-Dog Height 0.9-1.0Mm
94
Feed-Dog/Dual Feed Synchronization
95
Clutch Carriage / Thread Cutter
96
Clutch Mechanism
96
Thread Cutter
97
Synchrinising Disc
98
Rough-Adjustment
98
Fine-Adjustment
98
Threader
99
Basting Device
100
Needle Bar Guide
100
Checking the Timing of Disengagement
101
Thread Regulator
102
Thread Tension
103
Upper-Thread Tension
103
Lower Thread Tension (Basic Setting)
104
Winder
104
Lower-Thread Sensor Position
105
Chapter 5 - Service Program
106
Menu 1 - Service Information
109
Machine Basic Data
109
Machine Soft- and Firmware Data
109
Machine Operating Time Data
110
Machine Stitch Counter Data
110
BSR (BERNINA Stitch Regulator) Data
110
Machine Servicing Data
111
Saving / Loading Customer Data
112
Customer Data
112
Dealer Data
113
Log File
113
Menu 2 - Display, Buttons and Clock
113
What to Test
113
Touchscreen Calibration
114
LC Display (Screen)
115
Blank Dark LC Display (Screen)
115
Blank White LCD (Screen)
115
RGB (Red, Green and Blue) Screen
116
Keyboard Lights
116
Led's and Brightness
117
Menu 3 - Sensors (Mounting Locations in the Machine)
118
What to Test
118
Threader Sensor
118
Overlift Presser Food Switch (Presser Foot Height Sensor)
119
Lower-Thread Sensor
120
Feed Dog Drop
121
Dual Feed Recognition Sensor
122
Winder Microswitch
123
Free Hand System FHS
124
Menu 4 - Signals
125
What to Test
125
Stitch Width and Stitch Length Knob(S)
125
Functions of Keys and Buttons on Machine
126
Start-/Stop Slide (SSU)
126
Foot Control
127
Upper Thread Sensor
127
BERNINA Stitch Regulator (BSR)
128
PCBA-Position
128
Mechanical Fine-Adjustment of Synchronization Disk
129
Speaker
130
USB Ports
130
Basting Solenoid
131
Presser-Foot Recognition
132
BSR Foot Interface
134
Menu 5 - Stepping Motors (Mounting Locations in the Machine)
135
What to Test
135
Stitch Width Stepping Motor
135
Presser-Foot Pressure Stepping Motor
136
Upper Thread Tension Stepping Motor
136
Pinning Positions of All Stepping Motors
137
Bobbin Winder Motor
137
Stitch Length Stepping Motor
138
Sideways Motion Stepping Motor
139
Menu 6 - Adjustments
140
What to Test
140
Sewing-Off (Customer's View)
140
Balance
141
Rough Adjustment
141
Fine-Adjustment
142
Fine-Adjustment (Sideways Feed)
144
BDF Balance
145
Buttonhole Calibration
147
Thread Cutter Clamping Mechanism (Magnet)
148
Thread Cutting Process
148
Upper-Thread Tension Reset to Default
149
Resetting to Factory Settings (Reset All)
150
Presser-Foot Height and Presser-Foot Pressure
150
Automatic Upper-Thread Tension
151
Start-/Stop Unit (SSU) Slide Control Calibration
152
Normal SSU Sewing Speed
152
BSR Sewing Mode
153
Menu 7 - Embroidery Module (EMB)
154
What to Test
154
Menu 11 - Check out
155
What to Test
155
Important
155
Check-Out Tests
155
Chapter 6 - Lubrication Diagram
156
Chapter 7 - Firmware Update
161
Update Procedure
161
Update - Alternative Access
163
Chapter 8 - Maintenance Guidelines
164
Purpose of the Maintenance Guidelines
164
Explanatory Notes on the Stitch- and Hour Counter
164
When Is a Cleaning Message Displayed
164
When Is a Maintenance Message Displayed
164
How Are the Stitches Counted
164
Implementation of the Maintenance Intervals
165
Maintenance Intervals
165
Cleaning- and Service-Stitch Reset
165
Wear-And-Tear-Parts Definition
166
Non-Hour-Related Parts
166
Operating-Time-Related Parts
167
Maintenance Checklist
168
Measures to be Taken before the Maintenance
168
Measures to be Taken after the Service
168
Functional Check
169
Maintenance Checklist BERNINA 780 / 750 / 710
170
Embroidery Module
171
Document Revision History
172

Bernina 780 Service And Maintenance Manual (62 pages)

Embroidery Module

Brand: Bernina | Category: Sewing Machine | Size: 5 MB

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Bernina 780 Manuals

Bernina 780 Service And Maintenance Manual (172 pages)

Table of Contents

Bernina 780 Service And Maintenance Manual (62 pages)

Table of Contents

Chapter 1 - General Information

Chapter 2 - Description of Technical Details

Chapter 4 - Replacing Assemblies / Parts

Chapter 5 - Adjustments

Chapter 6 - Service Program

Chapter 7 - Testing the Module Using the Service Test Pattern

Chapter 8 - Lubrication Plan

Chapter 9 - Maintenance Guidelines

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