HE-800B
11. TROUBLESHOOTING
156
11-13. Upper thread run out
Items with a “*” in the “Page” column should only be handled by a qualified technician.
Cause
Check
Remedy
Page
Upper thread trimmer
assembly
Installation position of
upper thread trimmer
assembly
Adjust the installation position of upper thread trimmer
assembly by moving the setting plate assembly.
・
Upper thread trimmer longitudinal position
adjustment
・
Upper thread trimmer cutting depth adjustment
98, 99
Upper thread trimmer
assembly holding force
Adjust so that the thread does not come out when you
cut it with trimmer and hold the end of the thread
between your fingers and gently swing the assembly.
・
Bend the trimmer U or replace them so that the
correct force is applied.
・
Repair any damage from striking the needle.
–
Opening cam position
Adjust the position so that the trimmer does not touch
the opening cam when the work clamp is lowered.
101
(Continued on next page)
4006Q
4005Q
4107M
Approx. 0.5 mm
Cotton yarn #60
Holding force approx. 2N
Summary of Contents for HE-800B
Page 7: ...v HE 800B Oil tank accessory 4732M 4731M 4730M ...
Page 75: ...6 ASSEMBLY HE 800B 66 D E 0688D 0690D ...
Page 126: ...9 ELECTRIC MECHANISM HE 800B 117 Power PCB Cutter PCB LCD panel PCB 0831D 0768D 0769D ...
Page 133: ...9 ELECTRIC MECHANISM HE 800B 124 0851D ...
Page 134: ...9 ELECTRIC MECHANISM HE 800B 125 0852D ...
Page 135: ...9 ELECTRIC MECHANISM HE 800B 126 0853D ...
Page 177: ...MEMO 168 HE 800B ...
Page 178: ...SERVICE MANUAL 2014 Brother Industries Ltd All Rights Reserved HE 800B I3061003D 2014 03 D 1 ...