Brother International BAS-311E Network Users Manual - English - Page 119
Panel circuit board, circuit board, and check the continuity on
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Chapter 7 Error status Probable causes #17 The machine does not stop with the needle at the upper position. 1. The synchronizer is not properly adjusted. 2. Control circuit board defective #18 The machine can not sew patterns as pro- grammed. #19 The operation will not stop if the emergency stop switch is pressed. 1. EM switch defective. Check/repair/adjust Parts to be replaced • If the needle stop position varies at random every time the machine operation is complete, adjust the needle stop position to the upper position. • Refer to #8-1, 2, 3, 4. Control circuit board. • Remove connector P3 (HEAD) on the control circuit board, and check the continuity on the cord. Between pins 1 and 2: 0 Ω normally or ∞ Ω when the emergency stop switch is pressed. Between pins 2 and 3: ∞ Ωnormally or 0 Ω when the emergency stop switch is pressed. EM switch assembly. #20 The thread trimmer does not operate after the emergency stop switch is canceled. #21 The STEP BACK switch is inoperative. 1. Panel circuit board defective • Refer to #16, #17 • Refer to #1 and #2 (panel switch). Panel circuit board #22 Sewing is not resumed. • Refer to #8-1, 2, 3, 4 and #13, #14. #23 Programmi ng can not be made. 1. The programmer connector and its cable are defective. 2. The programmer is defective. 3. Panel circuit, board defective • Remove connector P2 (PGM) on the panel PCB and connector P2 on the programmer PCB, and then return them to their positions. • Replace the programmer with a new one. • Replace the panel circuit board with a new one. Programmer Panel circuit board BAS-311E.311EL.326E.326EL 111