HardDriveInfo
schlae
Repair info and schematics for mostly older MFM hard drives
Components (92)
| Reference | Value | Description |
|---|---|---|
| Q1,Q3,Q5 | BD436 | |
| Q2,Q4 | 2N6039 | |
| Q6,Q8-Q12 | 2N3906 | |
| Q7,Q13 | 2N3904 | |
| 1D1 | 74123 | |
| 1E1,1H1 | 7406 | |
| 1F1,1J1 | 7438 | |
| 2H1 | 74LS74 | |
| 2J1 | 74HC74 | |
| 3J1 | 74LS14 | |
| 4A1 | 75453 | |
| 4B1 | 11695-002 | |
| 4H1,8B1,8C1 | 7445 | |
| 4J1 | 7409 | |
| 5B1 | 6500/1 | |
| 5G1 | 091-001 | |
| 5H1 | SSI 280 | |
| 6D1 | 74273 | |
| 7D1 | 2716 | |
| 8D1 | 11665-001 | |
| 9E1 | 11642-001 | |
| C1,C8,C10,C13,C16,C18,C20,C27-C42 | 0.1uF | |
| C2 | 0.01uF | |
| C3,C22 | 100pF | |
| C4,C5 | ? | |
| C6 | 22pF | |
| C7 | 330pF | |
| C9 | 270pF | |
| C11,C12 | 1uF | |
| C14 | 39pF | |
| C15 | 41pF | |
| C17 | 0.068uF | |
| C19 | 0.012uF | |
| C23,C26 | 47uF | |
| C24 | 100uF | |
| C25 | 10uF | |
| C44 | 0.033uF | |
| CR1 | 1N4148 | |
| CR2-CR4 | 1N5818 | |
| D5 | LED | |
| J1 | control | |
| J2 | data | |
| J3 | POWER | |
| J4 | SPINDLE | |
| J5 | HEADS | |
| J6 | STEPPER | |
| J7 | CONFIG | |
| L1,L2 | 22uH | |
| L3,L4,L6 | 10uH | |
| L5 | 3.3uH | |
| R1,R2 | 162 | |
| R3 | 357 | |
| R4 | 39 | |
| R5 | 2.4K | |
| R6,R12,R26,R52,R53 | 100 | |
| R7 | 54.9 | |
| R8 | 2.8K | |
| R9,R37,R50,R51 | 1K | |
| R10 | 47 | |
| R11 | 1.37K | |
| R13,R49,R78 | 51 | |
| R14,R60 | 10K | |
| R15,R24,RP9 | 470 | |
| R16,R19,R31,RP13 | 3.3K | |
| R17 | 22.1K | |
| R18 | 2.2K | |
| R20,R28,R62,RP8 | 330 | |
| R22,R29 | 200 | |
| R23 | 750 | |
| R25,RP1 | 560 | |
| R27 | 0.39 | |
| R30,R82 | 6.8K | |
| R32,R35,R36 | 6.2K | |
| R33 | 5.62K | |
| R34 | 47K | |
| R38 | 39K | |
| R39-R42 | 15 | |
| R44 | 5.1 | |
| R46 | 510 | |
| R47 | 10 | |
| R58 | 825 | |
| R59 | 33K | |
| R61 | 220 | |
| R75 | 22 | |
| RP2 | 232 | |
| RP5,RP10 | 820 | |
| RP6 | 68 | |
| RP7 | 180 | |
| RP12 | 5.6K | |
| RP14 | 330,220 | |
| TP1-TP8 | TestPoint | |
| Y1 | 2MHz |