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Snap-on Tools Corporation  Kenosha, WI  53141-1410

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FIGURE 1 - SCHEMATIC  DIAGRAM

Summary of Contents for MM250SL

Page 1: ...SERVICE MANUAL FOR SERIAL NUMBERS MM250SL 2000 AND LATER FORM WC5276 MM250SL 9 94 Rev 2 95 1 96 7 97 9 97 1 00 ...

Page 2: ...A FRONT ASSEMBLY 6 PARTS LIST 7 FIGURE B LEFT SIDE VIEW INTERNAL COMPONENTS 8 PARTS LIST 9 FIGURE B1 PRINTED CIRCUIT BOARD SN 774U 10 PARTS LIST 11 FIGURE C FRONT VIEW REMOTE FEED UNIT 12 PARTS LIST 13 FIGURE D RIGHT SIDE VIEW INTERNAL COMPONENTS 14 REMOTE FEED UNIT PARTS LIST 15 FIGURE D1 PRINTED CIRCUIT BOARD SN 529U 16 PARTS LIST 17 FIGURE D2 WIRE DRIVE ASSEMBLY SN 138C24M 18 PARTS LIST 19 FIGU...

Page 3: ...Snap on Tools Corporation Kenosha WI 53141 1410 3 FIGURE 1 SCHEMATIC DIAGRAM ...

Page 4: ...n Kenosha WI 53141 1410 FIGURE 1A SCHEMATIC WIRE FEED CIRCUIT BOARD FIGURE 1B SCHEMATIC SPOT TIME CIRCUIT BOARD R3 Q1 SR2 4 C2 D7 C3 R4 Q2 D5 C4 R6 R5 R11 2 1 3 5 6 8 D8 PC2 C5 C6 R7 7 9 1 4 2 R8 Q3 D10 D9 CR2 6 5 3 R10 PC1 SR1 ...

Page 5: ...Snap on Tools Corporation Kenosha WI 53141 1410 5 RC2 RC3 FIGURE 2 WIRING DIAGRAM CONTROL CABLE ASSEMBLY A YELLOW A B ORANGE B C BLUE C D BROWN D E RED E F BLACK F G WHITE G H PURPLE H K GREEN K ...

Page 6: ...6 Snap on Tools Corporation Kenosha WI 53141 1410 FIGURE A FRONT ASSEMBLY 1 2 3 4 5 6 7 8 21 22 23 24 25 9 10 11 12 13 14 15 16 17 18 19 20 ...

Page 7: ...1058 LABEL CONTROL 1 11 SN 5050 BAFFLE 1 12 SN 5080 FRONT 1 SN 5080A FRONT SERIAL MM250SL 5475 AND LATER 1 13 SN 211 BRACKET CYLINDER 1 14 SN 699H CLIP HAIRPIN SERIAL MM250SL 2572 AND LATER 1 15 SN 699A STOP W CLIP HOLE FEEDER REPLACES ORIGINAL 1 16 CB2 SN 519 MINI BREAKER 5A 1 17 RC1 SN 6191A RECEPTACLE CONTROL OUTPUT 1 18 SN 146C WELD CONNECTOR W GAS HOLE 2 SN 72 NUT WELD CONNECTOR 2 SN 178 GROU...

Page 8: ...8 Snap on Tools Corporation Kenosha WI 53141 1410 FIGURE B LEFT SIDE VIEW INTERNAL COMPONENTS 1 4 5 6 7 8 9 26 27 10 13 14 15 16 18 17 19 20 21 25 24 23 22 3 2 11 12 FIG B1 ...

Page 9: ...Y 8 PIN 1 SN 276CL CLIP RELAY 1 SN 236 SOCKET RELAY 8 PIN 1 12 PC1 SN 774U WIRE FEED CONTROL BOARD FIGURE B1 1 13 S2 SN 163 12 HEAT SWITCH 12 POSITION 1 14 W SN 153 CONTACTOR 24VAC 1 15 T2 SN 287M CONTROL TRANSFORMER 230V 28V 1 16 SN 600 FITTING Y HOSE 1 17 SN 353Y HOSE 2 18 D1 2 3 4 SN 260 DIODE 4 19 R2 SN 162 RESISTOR 100 OHM 25W 1 20 SN 360 HEAT SINK ASSEMBLY COMPLETE 1 SN 360T HEAT SINK ASSEMB...

Page 10: ...10 Snap on Tools Corporation Kenosha WI 53141 1410 D7 C4 R3 R6 Q2 Q1 HS2 R11 R4 FIGURE B1 PRINTED CIRCUIT BOARD SN 774U HS1 C2 SR1 R5 C3 D5 ...

Page 11: ... 50DC 1 D5 HG 579 DIODE 2A 1 D7 HG 196 DIODE ZENER 7 5V 1 HS1 CB 251 HEAT SINK SCR 1 HS2 CB 250 HEAT SINK BRIDGE RECTIFIER 1 Q1 HG 194A SCR 10A 1 Q2 MI 627 TRANSISTOR PUT 1 R3 6 CB 043 RESISTOR 1K OHM 1 2W 2 R4 MI 127 RESISTOR 100 OHM 1 2W 1 R5 MI 135A RESISTOR TRIM 1 MEG OHM 1 R11 MI 159 RESISTOR 330 OHM 1 2W 1 SR1 CB 048 RECTIFIER BRIDGE 1 PART NO DIA MKGS ITEM NO ...

Page 12: ...12 Snap on Tools Corporation Kenosha WI 53141 1410 FIGURE C FRONT VIEW REMOTE FEED UNIT 1 2 6 7 8 9 11 12 13 14 3 4 5 10 ...

Page 13: ...BUMPER PAD SELF TAPPING SERIAL MM250SL 2572 AND LATER 2 4 SN 246B TERMINAL GAS CURRENT 1 5 RC4 SN 6190 RECEPTACLE CONTROL INPUT 1 6 SN 5180 FRONT FEED UNIT 1 7 SN 889F FEET RUBBER 4 8 S4 SN 425B SWITCH N O N C PURGE 1 9 SN 2520 KNOB TIMER 1 10 SN 67 KNOB FEED 1 11 S3 SN 245M SWITCH MODE 1 12 SN 5270U DOOR UPPER FEEDER 1 SN 5270UP DOOR PIN ONLY UPPER 1 13 SN 1059 LABEL FEED UNIT CONTROL 1 14 SN 527...

Page 14: ...14 Snap on Tools Corporation Kenosha WI 53141 1410 FIGURE D RIGHT SIDE VIEW INTERNAL COMPONENTS REMOTE FEED UNIT 1 9 10 12 13 14 15 16 17 2 3 4 5 6 7 8 11 FIG D1 18 FIG D2 ...

Page 15: ...TE FIGURE D2 1 9 LB 1368 LABEL ACCESS DOOR RIGHT 1 10 SN 685 TERMINAL HOUSING HARNESS BEHIND COVER 1 SN 685P PIN TERMINAL HOUSING BEHIND COVER 9 11 PC2 SN 529U SPOT TIMER BOARD BEHIND COVER FIGURE D1 1 SN 601 STAND OFF NYLON BEHIND COVER 4 12 SN 5220 SPOOL BRACKET 1 SN 5220A SERIAL MM250SL 2729 AND LATER 1 13 SN 22 SPOOL CLIP 1 14 SN 122 SPOOL HUB ASSEMBLY 1 SN 15 SHAFT 1 SN 16 BUSHING 2 SN 18 TEN...

Page 16: ...16 Snap on Tools Corporation Kenosha WI 53141 1410 D8 D9 C5 C6 R8 R10 Q3 D10 R7 CR2 SR2 FIGURE D1 PRINTED CIRCUIT BOARD SN 529U ...

Page 17: ... C5 6 MI 143 CAPACITOR 47uFD 50V 2 CR2 HG 576 RELAY 24VDC 4PDT 1 D8 9 10 HG 579 DIODE 2A 3 Q3 MI 627 TRANSISTOR PUT 1 R7 MI 125 RESISTOR 4 7K OHM 1 2W 1 R8 MI 148 RESISTOR 1 2K OHM 1 2W 1 R10 MI 126 RESISTOR 3 3K OHM 1 2W 1 SR2 CB 048 RECTIFIER BRIDGE 1 PART NO DIA MKGS ITEM NO ...

Page 18: ...18 Snap on Tools Corporation Kenosha WI 53141 1410 FIGURE D2 WIRE DRIVE ASSEMBLY SN 138C24M 32 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 8 7 10 9 10A 10B 11 12 ...

Page 19: ... ASSEMBLY NOT SHOWN 1 11 J1 AD 10 JUMPER 1 12 SN 237 CONTROL WIRE ASSEMBLY 2 13 SN 65 DRIVE ROLL LOCK WASHER 1 14 M SN 138C24 24VDC MOTOR 1 15 SN 53F ROCKER ARM 1 16 SN 158 PRESSURE ROLL 1 17 SN 55F BEARING SPACER BEHIND 1 18 HW 1420KHN 1 4 20 KEP NUT 1 19 SN 89 SPRING WASHER BEHIND 1 20 SN 52 SHOULDER BOLT 1 21 SN 33F INLET GUIDE 1 22 SN 136C INLET GUIDE TUBE 1 23 SN 34 NUT INLET GUIDE 1 HW 58ILW...

Page 20: ...MP 14 PIN PLUG 2 4 PLG2 CC 300 15 CONTROL CABLE ASSY 15 14 PIN 1 SN 6209 15 CABLE ONLY 15 1 5 RC2 SN 6191B PLUG 14 PIN MALE PINS 1 6 PS 4A POWER PLUG W GAS HOLE 1 7 SN 028 FERRULE HOSE 2 8 SN 025 CABLE FITTING 2 9 SN 023 WELD CABLE ONLY 14 10 1 10 SN 2157E 15 GAS CURRENT CABLE ASSY 15 EXTENSION 1 SN 027 15 GAS HOSE ONLY 15 1 11 SN 2008 CABLE TIE 15 12 SN 807G BOOT CABLE COVER 1 FIGURE E FEEDER CAB...

Page 21: ...MM250SL MM250SL 2000 AND LATER ...

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