Hi, I have a question about connecting a LCD monitor to a PowerMac 7600.
I have a 10 pin DB15 to VGA adapter to use here but can’t figure out the pin settings needed. The monitor is HP1907 LCD
Pics show suggestions. Thanks
That's a nice adapter with resolution settings molded into the plastic. For the 10-switch adapters that I used with 17" CRT VGA displays, I set switches 1, 4, 6, 7, & 8 to the ON position. Keep in mind that your 7600 onboard graphics support is only programmed for the older 4:3 aspect ratio settings that existed when the computer was manufactured from 1996-1997. Because the HP 1907's native resolution is 1440 x 900 @ 60 Hz, its widescreen image will likely be distorted.
That's a nice adapter with resolution settings molded into the plastic. For the 10-switch adapters that I used with 17" CRT VGA displays, I set switches 1, 4, 6, 7, & 8 to the ON position. Keep in mind that your 7600 onboard graphics support is only programmed for the older 4:3 aspect ratio settings that existed when the computer was manufactured from 1996-1997. Because the HP 1907's native resolution is 1440 x 900 @ 60 Hz, its widescreen image will likely be distorted.
Here's your picture, easier to read, with the legend highlighted, and examples for "on" and "off":
According to the chart, if your monitor is using composite sync (1) and you want 800 x 600 you would need to set switches 2, 3, and 5 "on" which is not one of the configurations shown above. So, use whatever setting you found that works.
When purchased new, the default configuration would have had all switches in the OFF position, which is down. They decided to use a raised square to illustrate a switch being slid up to the ON position. The adapters that I bought years ago had no chart on the back, nor a cover to protect the switches from being inadvertently moved to OFF or ON. A small instruction sheet had the necessary info.
Thanks. Yes the configurations stamped on it really helps.
Working fine now. Btw what does SW ON mean?
Yes thank you. I just played around with the configurations stamped on the adapter to get to the resolution needed.
Working fine.
PowerMac 7600: DB15 to VGA pin settings for LCD monitor
