HardDriveInfo
schlae
Repair info and schematics for mostly older MFM hard drives
Components (91)
| Reference | Value | Description |
|---|---|---|
| Q1,Q3,Q5 | BD436 | |
| Q2,Q4 | 2N6039 | |
| Q6,Q7,Q9 | 2N3906 | |
| 1B1,4A1 | 74123 | |
| 1C1,1D2 | 7438 | |
| 1H1,3B1 | 7406 | |
| 2E1 | 75453 | |
| 3A1 | 74HC74 | |
| 3J1 | 74LS14 | |
| 4B1 | 7409 | |
| 4F1 | 11695-002 | |
| 5B1 | 10206-002 | |
| 5D1 | 6500/1 | |
| 6D1 | 74LS74 | |
| 6F1,7F1 | 7445 | |
| 7E1 | 11665-001 | |
| 8E1 | 10014-002 | |
| 9E1 | 11642-001 | |
| C1,C4,C5,C8,C16,C18,C22,C25,C27-C30,C32-C35,C37,C38,C40,C43,C46,C47 | 0.1uF | |
| C2,C10,C13 | 0.01uF | |
| C3,C44 | 100pF | |
| C6,C42 | 22pF | |
| C7,C11,C12 | 330pF | |
| C9,C36 | 220pF | |
| C14,C15,C39,C41 | 47pF | |
| C17 | 0.068uF | |
| C19 | 0.012uF | |
| C20,C31 | 0.47uF | |
| C21 | 39 | |
| C23,C26 | 4.7uF | |
| C24 | 100uF | |
| C45 | DNI | |
| CR1 | 1N4148 | |
| CR2,CR3 | 1N5818 | |
| D5 | LED | |
| J1 | control | |
| J2 | data | |
| J3 | POWER | |
| J4 | SPINDLE | |
| J5 | HEADS | |
| J6 | STEPPER | |
| J7 | CONFIG | |
| L1,L2,L7,L8 | 22uH | |
| L3,L4,L6 | 10uH | |
| L5 | 3.3uH | |
| L9 | 33uH | |
| R1,R2 | 162 | |
| R3 | 357 | |
| R4 | 71.5 | |
| R5,R25 | 13.0K | |
| R6,R12,R26 | 100 | |
| R7 | 54.9 | |
| R8 | 2.43K | |
| R9 | 1K | |
| R10 | 47 | |
| R11 | 1.24K | |
| R13,R16,R31,R37,RP7 | 3.3K | |
| R14 | 15K | |
| R15 | 470 | |
| R17 | 22.1K | |
| R18 | 3.32K | |
| R19,RP1 | 1.00K | |
| R20,R28,R62 | 330 | |
| R21 | 0 | |
| R22,R29 | 200 | |
| R23,R51 | 750 | |
| R24 | 11.0K | |
| R27 | 0.39 | |
| R30,R35 | 6.2K | |
| R32,R36 | 8.84K | |
| R33,R34 | 43.5K | |
| R38 | 39K | |
| R39-R42 | 12 | |
| R43 | 17.4K | |
| R44 | 5.1 | |
| R45,R47 | 499 | |
| R46 | 510 | |
| R48,R49 | 10.0 | |
| R50 | 2.61K | |
| R52 | 1.05K | |
| R61 | 220 | |
| R75 | 22 | |
| Rbodge? | 62K | |
| RP3 | 6.8K | |
| RP4 | 51 | |
| RP5,RP10 | 820 | |
| RP6 | 12497-001 | |
| RP12 | 5.6K | |
| RP14 | 330,220 | |
| TP1-TP7 | TestPoint | |
| Y1 | 2MHz |