Monitors

Commodore 1084d, 1084dS

Technical Specifications:


Picture Tube                          : 14 inch, in-line slotted, pitch .42mm
Display Screen                        : 13 inch, measured diagonally
Deflection                            : 90�

Monitor input sockets for RGB signals:
1) 9-pin D                            : RGB Analog 0.7 P-P, 75 Ohm
   DIN connector                      : RGBI Digital TTL Levels

Resolution                            : 640 x 200 lines
                                        640 x 400 lines interlaced
Characters                            : RGB, RGBI, 2000 characters
                                        Composite, Seperated LCA, 1000 characters
Raster Frequency                      : 60Hz
Line Frequency                        : 15750Hz
Sound Output                          : 1WRMS
Audio Signal                          : 1.0V P-P, 47K Ohm
Mains Voltage                         : 120 VAC, 60Hz
Power Consumption                     : 75W
Dimensions (H x W x D)                : 330 x 357 x 378 mm
Weight                                : 11 kg

Looking at the back of the monitor
             Digital         Analog
Pin Number   TTL Mode        RGB Analog Mode

1            Ground          Ground
2            Ground          Ground
3            Red             Red
4            Green           Green
5            Blue            Blue
6            Intensity       N/C
7            N/C             Composite Sync
8            Horiz.Sync      N/C
9            Vert. Sync      N/C

1084 Sub-Models

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.

Other Notes

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�

Thanks to Greg Scott (National Amiga)