HP Designjet 1050C memory not recognized

**blackcat4866** · 03-17-2009

Technically only the new two 64MB DIMMs are not recognized. The old 16 + 32 are recognized fine.

I've seen a few bad memory DIMMs over the years, but not two, both brand new in the anti-static wrappers. When I insert one of the new DIMMs alongside one of the old DIMMs, the machine boots up and recognizes only the old DIMM, regardless which socket it is installed in. With the two new 64s it won't even boot up.

Is there some sort of memory clear required at a new install? Regardless, I wouldn't be able to get to a service menu to run anything.

I can only conclude that my two new 64MB DIMMs took an unscheduled trip through an MRI machine, and are forever dead. Has anyone come across this? =^..^=

**prntrfxr** · 03-26-2009

did you get any error codes?

This is probably stuff you've already tried:

The service manual suggests replacing one component at a time and perform service test to see what has failed.

When you install memory, make sure the power button on the back of the printer is off not just the front switch. Install and then power up.

To do tests you have to go to the Service Test menu. With the back switch on and the front power switch off, hold the COLOR key and switch the printer on. When you see Initializing you can release the COLOR key. Scroll to electronic systems to perform test. If it passes it will tell you if not you will see an error. Make sure that you cycle power to the printer to get out of the tests mode.

Let me know what you find out after checking this.