Brother International BAS-416 Service Manual - Page 138

NO. IN FLOW CHART AND ERROR STATUS CAUSE CHECK/ADJUSTMENT/REPAIR PARTS TO BE REPLACED REF. PAGE #5 "Disk ERR." is displayed. • Floppy harness defective • FDD power supply harness defective • Floppy disk drive defective • Improper media • Main circuit board defective C) Check that connector P15 is correctly Floppy harness connected and proper continuity tested for. Check that connector P5 of power supply FDD power supply circuit board is correctly connected or harness proper continuity tested for. With connector P5 of power supply circuit board removed, measure voltage between pin 1 (+ ) and pin 3 (-). If it is not +5V, it is defective. Replace floppy disk drive. Floppy disk drive a. Check that it is correct for machine. Media b. Check that media type is correct. 2DD Media type cannot be replaced by 2HD,and vice versa: Replace main circuit board. Main circuit board #6 "Short of Area" is displayed. Mis-operation Check area and ratio in editing mode. - - #7 "th data ERR." is displayed. #8 "*th Memory OVR" is displayed. #9 Hoop does not move. Improper media • Mis-operation • Memory expansion board defective • Main circuit board defective M is-operation Refer to item #3. Check media. Replace media. Entered data exceeds the inside memory capacity and cannot be managed. Replace memory expansion board. Replace main circuit board. Area is set too small. Re-edit in editing mode. Refer to item #3. - Memory expansion board Main circuit board - Refer to item #3. Refer to item #3. #10 Sewing machine runs but hoop does not move. #11 Overload occurs immediately after sewing began. • Encoder harness defective • Rotary encoder defective • Synchronizer defective • Sewing machine motor circuit board harness defective • Sewing machine motor circuit board • Fuse Fl blown C) Check that connector P13 is correctly Encoder harness connected and proper continuity tested for. Replace rotary encoder. Rotary encoder Replace synchronizer. Synchronizer C) Check that connector P4 is correctly Sewing machine connected and proper continuity tested motor circuit board for. harness Replace sewing machine motor circuit Sewing machine board. motor circuit board Replace fuse. Fuse #12 Overload occurs during automatic thread trimming. Machinery defective Refer to item #11. Repair and adjust machinery. Refer to item #11. Refer to item #11. #13 Errors relative to needle bar case appear. • Head sensor harness defective • Needle change pulse motor defective • Circuit board defective • Fuse F2 blown ()Check that connector P12 is correctly connected and proper continuity tested for. Replace pulse motor. Index circuit board harness Pulse motor Replace PMD circuit board. Replace fuse. Main circuit board Fuse 131 BAS-401 • 412A • 416A • BES-1210AC