HardDriveInfo
schlae
Repair info and schematics for mostly older MFM hard drives
Components (107)
| Reference | Value | Description |
|---|---|---|
| Q2 | 2SD1760 | |
| Q3-Q5 | IRFD110 | |
| Q6,Q7,Q15,Q16,Q18 | BC846 | 0.1A Ic, 65V Vce, NPN Transistor, SOT-23 |
| Q13 | BC846A | |
| Q14 | "1A" | |
| Q17 | 2N3906 | PNP transistor, base/emitter/collector |
| U1 | 8051 | |
| U2 | 74LS573 | 8-bit Latch 3-state outputs |
| U3 | 74LS14 | Hex inverter schmitt trigger |
| U4 | CDM6264 | |
| U5 | AIC-010L | |
| U6 | AIC-301L | |
| U7 | SRAM_6116 | |
| U8 | 11747-501 | |
| U9 | AIC-270L | |
| U10 | DP8462 | |
| U11 | 11734-501 | |
| U13 | 74LS155 | Dual 2 to 4 lines Decoder/Demultiplexer |
| U21-U23 | 74LS174 | Hex D-type Flip-Flop, reset |
| U24 | 74LS257 | Quad 2 to 1 Multiplexer |
| U27 | 74LS00 | |
| U28 | 74LS196 | 4 (3+1)-bit presettable BCD counter |
| U29 | 74LS123 | |
| U30 | 74F08 | |
| 4H1 | 11738-502 | |
| 6A1 | SSI296 10206-501 | |
| 7C1 | 10210-501 | |
| 7E1 | 11743-501 | |
| 7F1 | 10223-502 | |
| 8F1 | 11744-502 | |
| 10E1 | 10188-501 | |
| 10F1,10H1,11F1 | 11721-501 | |
| 11E1 | 10189-502 | |
| C1,C2,C6,C9,C11,C12,C15,C16,C19,C22,C24,C28,C30,C33,C46-C48,C50-C53,C55-C58,C60,C66,C68,C70,C71,C73-C75,C78-C89 | 0.1uF | |
| C3,C35-C37 | 0.01uF | |
| C4,C17,C31,C62,C63 | 1uF 35V | |
| C5 | 0.068uF | |
| C7,C8,C13,C14,C20,C21,C23,C25,C26,C29,C34,C38,C39,C42,C49,C54,C59,C67,C69,C72,C90,C91,CR6,D2,L4-L10,Q1,Q8-Q12,R24,R30,R58,R87 | ? | Schottky diode |
| C10 | 22pF | |
| C18 | 39nF | |
| C27,C40,C44,C64,C65 | 22uF 20V | |
| C32 | 0.47uF | |
| C41 | 100pF | |
| C43 | 10uF 25V | |
| C45 | 27pF | |
| C61 | 1.5uF 35V | |
| C76,D1 | DNI | |
| CR1 | 1N5??8 | Schottky diode |
| CR4 | BZX84C5V1 | |
| CR5 | BL9 | |
| CR7 | P6KE13 | |
| D11 | RED | |
| J2 | ID | Generic connector, double row, 02x04, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3 | POWER | |
| J4 | SPINDLE | |
| J5 | STEPPER | |
| J6 | HEADS | |
| J8 | SCSI | |
| JP1,JP2 | Jumper_2_Bridged | |
| L1,L2 | 22uH | |
| L3,Langle1 | 10uH | |
| R1 | 1.1K | |
| R1B1 | 22.1 | |
| R2 | 2.21K | |
| R3 | 59.0 | |
| R4,R7,R52,R66,R86,R88-R90,R94 | 10K | |
| R5,R6,R46 | 6.19K | |
| R8 | 59.0 1% | |
| R9 | 5.1 | |
| R10,R12,R13,R19,R28,R33,R67,R67B1,R68,R68B1,R81 | 10 | |
| R11 | 242 | |
| R14-R18,R20,R34,R36-R39,R54,R62,R63,R74,R76,R91-R93,R100,R103 | 1K | |
| R21,R26,R27 | 499 1% | |
| R22,R23,R84 | 162 | |
| R25 | 100 1% | |
| R31 | 1.00K | |
| R32 | 14.7K 1% | |
| R33B1 | 10.0K | |
| R35,R79 | 3.01K | |
| R40,R56 | 100K | |
| R41 | 240 | |
| R42 | 4.75K | |
| R43 | 511 | |
| R44 | 0 | |
| R45 | 2.32K | |
| R47,R78 | 825 | |
| R48 | 53.6 | |
| R49 | 825K | |
| R50 | 22.2K | |
| R51 | 14.7K | |
| R53 | 8.89K | |
| R55 | 22K | |
| R57 | 1.62K | |
| R59 | 43.2 | |
| R60 | 20K | |
| R61 | 1.21K 1% | |
| R64,R104 | 6.2K | |
| R65 | 1M | |
| R69 | 499 | |
| R70,R75 | 1.0K | |
| R71,R99 | 3.83K | |
| R72 | 300 | |
| R73,R77 | 51 | |
| RN1-RN3 | TERM | |
| TP1-TP6,TPE1-TPE4 | 1/2 STEP | |
| Y1 | 10MHz | Two pin crystal, small symbol |
| Y2 | 15MHz | Two pin crystal, small symbol |