This service manual provides detailed information for the Brother LZ2-B855E and LZ2-B856E electronic single‑needle zigzag lock stitchers. It includes safety instructions, machine specifications, mechanical descriptions, disassembly and assembly procedures, adjustment guidelines, and troubleshooting steps.
The manual is intended for qualified technicians and references the accompanying user instruction manuals. It contains tables of specifications, wiring diagrams, and a list of error codes to aid in maintenance and repair of the sewing machines.
| Maximum stitch length | 2.5 mm (B855E) / 5 mm (B856E) |
|---|---|
| Maximum sewing speed | 5,000 rpm |
| Needle bar stroke | 33.3 mm |
| Presser foot pressure | 20‑60 N |
| Motor power | 400 W three‑phase induction motor |
| Power supply voltage | Single‑phase 110 V / 220 V / 230 V |
| Maximum electric power consumption | 600 VA |
| Maximum zigzag width | 10 mm (standard 8 mm) |
| Built‑in sewing patterns | 14 patterns of eight types |
| Custom pattern capacity | Up to 99 patterns (10,000 stitches total) |
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord before opening the face plate.
See section 6‑2 “Adjusting the presser foot height” in the manual for step‑by‑step instructions.