PC 40-III “Rosenthal”

Serial: 015334

• CPU: Intel 80286 running at 6MHz (standard) or 12MHz (double)
• Optional 80287 math co-processor
• RAM: 1024K [640K Base, 384K extended]
• ROM: 2.03
• Floppy Drives:
  • A: 1,2M 5,25″ Chinon FZ-506
  • B: 1,44M 3,5″ Mitsumi
• Hard Drive: QUANTUM: PRODRIVE 40 AT 42MB 3.5″ [Type 17]
• Ports:
  • 9-pin d-sub bus mouse port compatible with Commodore Amiga 1352 mouse [MOS 5720]
  • RCA audio out
  • 25-pin d-sub RS-232 serial port
  • 25-pin d-sub 8-bit Centronics parallel port
  • VGA
• Video: onboard Paradise VGA
• 4x ISA slots for expansion [3x 16bit, 1x 8bit]

• work performed:
  • DALLAS IC: voltage divider added for power supply
  • HDD repaired: Sticky head stops / stuck bearings
  • whole machine completely dismantled and cleaned
  • FDDs disassembled, cleaned and lubricated
  • mainboard and PSU recapped with Rubycon brand 105° type
  • HDD backup [Ghost 2]