1084 Reference

The 1084 and its variants (1084S, 1084S-P, 1084-P, 1084S-P2, 1084-D, 1084S-D, and 2080) are all 15.75 kHz monitors. They do not handle AGA "double" screenmodes, nor will they display the deinterlaced output from the A2320 Amber board or the motherboard deinterlaced output on an A3000. However, they will show all normal 15.75 kHz displays, and many (most? all?) of the 1084 versions have a separate input for composite video.

The 1084 is a usually a variation of the Philips CM8833 monitor; the 1084S-D was made by Daewoo (as was the 1084D, probably). The display tubes used in these monitors were made by Orion, Toshiba, Hitachi, and Samsung.

At one time or another, every possible permutation of connectors and video capabilities on the 1084 seems to have been reached, so don't be surprised if your 1084 has some bizarre combination of connectors and specifications.

Common Problems

• The door covering the front-panel controls is typically broken off.    
• The attached cables or connectors on some models tended to fail, causing loss of color or other problems. Resolder the pins. You can glue connectors in place to provide support.
• Failed or insufficient insulation may cause arcing.
• The power switch may partially fail, causing separate parts of the monitor to power down.
• A phone caller suggested that internal connectors could tarnish with age, and disconnecting and cleaning them may help clear up some problems.
• Repeatedly blown fuses can indicate a bad power supply.
• A loud whistling noise indicates a bad flyback transformer (also known as an LOPT). Some 1084 monitors also have digital RGB (PC clone CGA) inputs, and there was such a profusion of minor or major variations that any 1084 might have any combination of analog RGB, digital RGB, and composite inputs.

The 2080 is a long-persistance phosphor, .39 mm dot pitch.

Specifications

  Sync Frequency 15.75 kHz (NTSC; 15.6 kHz PAL)

Pin-Outs (Analog RGB, 6-Pin DIN)

  Pin 1: Green
  Pin 2: Horizontal Sync
  Pin 3: Ground
  Pin 4: Red
  Pin 5: Blue
  Pin 6: Vertical Sync

Pin-Outs (Digital RGBI, 8-Pin DIN)

  Pin 1: Unused
  Pin 2: Red
  Pin 3: Green
  Pin 4: Blue
  Pin 5: Intensity
  Pin 6: Ground
  Pin 7: Horizontal Sync
  Pin 8: Vertical Sync

Pin-Outs (1084S DB9)

  Pin 1: Ground
  Pin 2: Ground
  Pin 3: Red
  Pin 4: Green
  Pin 5: Blue
  Pin 6: Unused
  Pin 7: Composite Sync
  Pin 8: Horizontal Sync
  Pin 9: Vertical Sync

2080 Pin-Outs (SCART Euroconnector)

   Pin 1: Unused
   Pin 2: Audio Input (0.5 Vrms/ > 10Kohms)
   Pin 3: Unused
   Pin 4: Audio Ground
   Pin 5: Blue Ground
   Pin 6: Audio Input (0.5 Vrms/ > 10Kohms)
   Pin 7: Blue Video (0.7 Vpp/ 75 ohms)
   Pin 8: Unused
   Pin 9: Green Ground
  Pin 10: Unused
  Pin 11: Green Video (0.7 Vpp/ 75 ohms)
  Pin 12: Unused
  Pin 13: Red Ground
  Pin 14: Unused
  Pin 15: Red Video (0.7 Vpp/ 75 ohms)
  Pin 16: Fast Blanking
  Pin 17: CVBS Ground
  Pin 18: Fast Blanking Ground
  Pin 19: Unused
  Pin 20: CVBS Input (1 Vpp/ 75 ohms, sync signal for linear RGB input)
  Pin 21: Screening Plug

2080 Pin-Outs (Digital RGB 8-Pin DIN)

  Pin 1: Status Computer (?)
  Pin 2: Red
  Pin 3: Green
  Pin 4: Blue
  Pin 5: Intensity
  Pin 6: Ground
  Pin 7: Horizontal Sync or Composite Sync
  Pin 8: Vertical Sync