| MODEL # | OLD P/N | M4 P/N | DESCRIPTION | PURCHASE | EXCHANGE | REPAIR |
|---|---|---|---|---|---|---|
| M490E/4890 | 122390 | 130913 | AIR PUMP ASSY | YES | YES | YES |
| M490E/4890 | 122430 | 131800 | DIGITAL DATA PCB (DDP) | YES | YES | YES |
| M490E/4890 | 128515 | 129823 | HEAD PLATE ASSY | YES | YES | YES |
| M490E/4890 | 129810 | 131050 | SCSI PCB | YES | YES | YES |
| M490E/4890 | 122600 | LACE WHEEL SENSOR | YES | NO | NO | |
| M490E/4890 | 129204 | BUTTON PAD, FRT PANEL | YES | NO | NO | |
| M490E/4890 | 129153 | COMPLETE LWR MOLDING | YES | NO | NO | |
| M490E/4890 | 130861 | BUTTON CAPS | YES | NO | NO | |
| M490E/4890 | 130862 | DC SWITCH, w/spring & c-clip | YES | NO | NO | |
| M490E/4890 | 129591 | LOWER MOLD FILTER | YES | NO | NO | |
| M490E/4890 | 129590 | UPPER MOLD FILTER | YES | NO | NO | |
| M490E/4890 | 130932 | RFI PLATE, DT MODEL | YES | NO | NO | |
| M490E/4890 | 129040 | OP PANEL INLAY | YES | NO | NO | |
| M490E/4890 | 129319 | LATCH MOTOR | YES | NO | NO | |
| M490E/4890 | 132920 | LATCH PCB, LOAD MECH | YES | YES | YES | |
| M490E/4890 | 129213 | POWER SUPPLY | YES | YES | YES | |
| M490E/4890 | 550504 | CROWN WHEEL | YES | YES | YES | |
| M490E/4890 | 129215 | FAN ASSY | YES | YES | YES | |
| M490E/4890 | 122384 | LACE WHEEL ASSEMBLY | YES | NO | NO | |
| M490E/4890 | 129217 | MAIN FILTER ASSY, w/bracket & air solenoid | YES | YES | YES | |
| M490E/4890 | 129520 | AIR FILTER (ONLY) | YES | NO | NO | |
| M490E/4890 | 129220 | PRE-AMPLIFIER ASSY | YES | YES | YES | |
| M490E/4890 | 129240 | DEVICE CONTROL | YES | YES | YES | |
| M490E/4890 | 129270 | READ PCB | YES | YES | YES | |
| M490E/4890 | 129328 | TAKE UP MOTOR | YES | NO | NO | |
| M490E/4890 | 129368 | GEAR BOX | YES | YES | YES | |
| M490E/4890 | 129327 | SUPPLY MOTOR | YES | NO | NO | |
| M490E/4890 | 129570 | SYSTEM PCB | YES | YES | YES | |
| M490E/4890 | 129603 | AIR SOLENOID | YES | YES | YES | |
| M490E/4890 | 129660 | LOADING MECHANISM | YES | YES | YES | |
| M490E/4890 | 129680 | MOTHER BD (S/N>125) | YES | NO | NO | |
| M490E/4890 | 129690 | FRONT PANEL(S/N>125) | YES | YES | YES | |
| M490E/4890 | 130449 | SERVICE MANUAL | YES | NO | NO | |
| M490E/4890 | 130904 | UPPER MOLDING (ONLY) | YES | NO | NO | |
| M490E/4890 | 131286 | MOLDING FRM FRONT | YES | NO | NO | |
| M490E/4890 | 131287 | MOLDING FRM REAR | YES | NO | NO | |
| M490E/4890 | 130970 | MOTHER BD 4M/S | YES | YES | YES | |
| M490E/4890 | 131060 | SYSTEM PCB FIPS | YES | YES | YES | |
| M490E/4890 | 131720 | READ PCB 4M/S | YES | YES | YES | |
| M490E/4890 | 130871 | LOWER MOLDING (ONLY) | YES | NO | NO | |
| M490E/4890 | 130306 | FIPS PCB | YES | NO | NO | |
| M490E/4890 | 128507 | TAKE UP HUB | YES | NO | NO | |
| M490E/4890 | 131783 | COMPLETE UP. MOLD | YES | NO | NO | |
| M490E/4890 | 131870 | DDP PCB 4M/S | YES | YES | YES | |
| M490E/4890 | 131960 | SYSTEMS PCB 4M/S | YES | YES | YES | |
| M490E/4890 | 132520 | PRE-AMP PCB 4M/S | YES | YES | YES | |
| M490E/4890 | 132800 | SCSI PCB 4M/S | YES | YES | YES | |
| 999912 | 68PIN S/E TERM. | YES | NO | NO | ||
| 999913 | 68PIN DIFF TERM. | YES | NO | NO | ||
| 999916 | 6' 68 TO 50 CENT CABLE | YES | NO | NO | ||
| 999924 | 6' 68 TO 68 CABLE | YES | NO | NO | ||
| 999926 | 6' 68 TO MINI50 CABLE | YES | NO | NO |