PC 40-40

Serial: DA4 020975

• Mainboard: NBI 4200:
  • Processor: 80286
  • Processor Speed: 10MHz
  • Onboard Memory: 1MB [512kB/512kB]
  • BIOS: Award
  • NPU Options: 80287 [none installed]

• WD1003-WA2 Hard Disk/Floppy Controller IO card

• Video Card: ATI EGA Wonder PN 16892 rev 1 1987
  • Data Bus: 8-bit ISA
  • 256K DRAM
  • Video Types Supported: Monochrome, CGA, EGA

• Floppy: Toshiba ND-08DE 5,25″ HD 1,2MB

• HDD: Hitachi DK521-5:
  • Interface: MFM
  • Physical Size: 5.25″ HH
  • Capacity: 40MB
  • Speed: 3,600RPM
  • Type 26: 823/6/17

• work performed:
  • whole machine completely dismantled and cleaned
  • PSU recapped with Rubycon 105° caps
  • three blown tantalum caps on mainboard replaced
  • sticky tape / markings removed on the back
  • metal slot covers restored to former shine and glory
  • black scuffmarks on front and metal cover mostly removed
  • floppy bezel and knob gently retrobrighted
  • HDD backup [Ghost 2]

PC 40 Technical Manual