Bernina 1090 - Table of Contents

Contents
Technical doto 5
Description of Print L-1230 6
Print A-KAO 6
Print S-KAO 5
Block schematic model 1090 7
Plug connections 8
Print A-KAO 9
Print S-KAO 10
Print L-1230 т
Diagnosing instructions 12
Test adapter L-4200 13
Benet = i208 м
Service panel 15
Test Se service-panel 16
Warning against dangerous voltages т
Starting the service programme 17
Ending the service programme 17
Diagnosis
L-1230
Print L-1230 /R-4200 (Drive signal)
с Connection S-KAO/L-1230 22
D Mains cord (cord reel) 23
Е Connection of print 5-КАО /foot control unit 24
F Print Р-4200 25
G Complete light holder 26
H Step motors: 27
О Print S-KAO
О Hall-sensors
Hz | О Position Hall-sensor S.L. 28
О Position Hall-sensor S.B.
1 Step motors pinning position 2
к Foot control unit 30
L Foot control digital/analog з
м Print A-KAO 32
Print 5-КАО
Print L-1230
N Ret-button 3
о Equalization of the forward/reverse feed з
E ` Bobbin winder motor 35
Q Sewing-off: 3%
O Stitch length
O Stitch width
О Needle position L.C.R.
stitch
R Бе min. ond max. position of SL and SB 37
Function test