1 When “ER01” appears on OP Screen.
2 When “ER02” appears on OP Screen.
3 When “ER03” appears on OP Screen.
4 When “ER04” appears on OP Screen.
5 When “ER05” appears on OP Screen.
6 When “ER06” appears on OP Screen.
7 When “ER07” appears on OP Screen.
8 When “ER08” appears on OP Screen.
9 When “ER10” appears on OP Screen.
10 When “ER11” appears on OP Screen.
11 When “ER12” appears on OP Screen.
12 When “ER13” appears on OP Screen.
13 When “ER55” appears on OP Screen.
14 When “ER61”, "ER130" appears on OP Screen.
15 When “ER128” appears on OP Screen.
16 When “ER129” appears on OP Screen.
17 When “ER Err” appears on OP Screen.
18

The machine malfunctions after replacing Expansion ROM or Program ROM.

19 The Sewing Machine ' s TT(Tread Trimmer), PF(Presser Foot) and WP(Wiper) do not work.
20

Only one of TT, PF and WP of the Sewing Machine does not work.

21

ER does not appear on OP and the Sewing Machine does not work.

22

Even after the Sewing Machine is stopped, it advances a stitch more.

23

When the Sewing Machine malfunctions due to unskilled program operation.

24

How to set Extension ROM Format.