Commodore CBM 8050 Cleaning and Repair
In questa gallery sono illustrate alcune fasi della pulizia del Commodore CBM 8050 Dual Drive Floppy Disk, inoltre sono state fatte delle riparazioni che descrivo qui di seguito.
Difetto:
- Died – Status LED: RED (5 Flash) Zero page error.
Componenti sostituiti:
- 1 x 6502
- 1 x 6532
- 1 x 6522
- The connectors of write enable sensors are inserted incorrectly.
- Missing +5v on the PCB of the sensor circuit.
- Dirtiness in the write enable sensor drive 0
- Cleaning floppy drive heads.
- Cleaning strap of the floppy drive.
- Removing the filter capacitor.
- The Analog PCB of the Floppy Drive is not fixed properly.
- The Locking screws of the external box are not original.
- Lost the felt which push the Floppy Disk vs the head.
- Disk is present (Switch Motor) dirty.
- General Cleaning.
Test formatting floppy disk:
I have an 8050 dual disk drive for CBM 8032SK. Appears all logic boards are good and passes initial bootup self-test. But when do some DOS command to drives (HEADER command, for example) the motor of R/W head are not move forward. Appears looks like move but don’t rotate properly.
Appears something wrong about steppermotor sequence?
Thanks for advance