8. ELECTRIC MECHANISM
Error status | #16 Error code appears on the display window after the machine operates. | |||
|
|
| ||
Probable causes | Check/ repair/ adjust | Parts to be replaced | ||
2. A malfunction occurs due to | a. Make sure that the ground wire is surely |
| ||
noise or main PROM is | grounded and there is no equipment that |
| ||
defective | when error code | generates strong electrical noise in the |
| |
vicinity. |
| |||
machine is started. |
| b. If the machine has been remodeled, |
| |
([E.21]: | return the machine to its original condition |
| ||
|
|
| before checking. |
|
|
|
| c. If the error still occurs after replacement | PROM |
|
|
| of PROM, put the original PROM back |
|
|
|
| before checking. |
|
|
|
| ||
3. Power supply voltage ab- | a. Make sure that the power supply voltage |
| ||
normally | lowers when error | of the wall socket is within ±10% of the |
| |
code | voltage specification. |
| ||
machine is started. |
| b. See |
| |
([E.90]: | If 550VA/machine is not allocated at the |
| ||
|
|
|
| |
|
|
| power source, the voltage will drop as soon |
|
|
|
| as the machine is started, resulting in this |
|
|
|
| error. |
|
|
|
|
| |
|
|
| ||
Error status | #17 The machine cannot produce correct stitches. |
| ||
|
|
| ||
Probable causes | Check/ repair/ adjust | Parts to be replaced | ||
1. Synchronizer defective | • See |
| ||
|
|
| ||
2. Pulse motor is defective or | a. See |
| ||
mechanical adjustment is not | b. If stitching deviates because of |
| ||
appropriate when | stitching | insufficient pressure of the work clamp, |
| |
deviates from what it should | see “Adjusting the work clamp lift |
| ||
be. |
|
| amount” for adjustment. |
|
|
|
| c. Make adjustments if the feed mechanism |
|
|
|
| has any unnecessary looseness. |
|
|
|
|
| |
|
|
| ||
Error status | #18 The thread trimmer does not operate. |
| ||
|
|
| ||
Probable causes | Check/ repair/ adjust | Parts to be replaced | ||
1. Home position sensor not | • Adjust the thread trimmer mechanism |
| ||
adjusted properly |
| (page 54, 55 and 86). |
| |
|
|
| (When it is obvious that the thread trimmer |
|
|
|
| does not operate, perform the check/ |
|
|
|
| repair/adjust items of |
|
|
|
|
|
|
2. Thread | trimmer | solenoid | • Separate P5 (SOL) connectors on the | Thread trimmer sole- |
defective |
|
| main circuit board, and then measure the | noid |
|
|
| resistance between pins 1 and 2 in the |
|
|
|
| connector on the cable. |
|
|
|
| If the resistance is |
|
|
|
| not defective. |
|
|
| 3647Q |
|
|
|
|
|
|
|
187 |