| Electronics > Repair |
| Series defect on agilent 167xx boards? |
| << < (30/50) > >> |
| MateKrisz:
Hi MarkL, I followed your insturctions. Here is my results: Jumper on J7, 18-20. Only do_ram_test and do_dram_test is PASS others failed extept 100,180,300,ext tests they are untested. I plugged the cables. Only the cables because of the PODs is missing for me. Results is same with the previous test. I'm surprised that my LA ignored the J7 jumper settings. |
| MateKrisz:
I ran the x modtest on the 16557D board. All passed extept the do_comparator_stest is failed. I will check the traces on this board. Maybe find somthing broken trace. |
| hackwell:
Hi everybody I ran into the same issue yesterday with my 3 16718A modules. I didn't notice the failures until I tried to use pods 2 and 3 which failed on the 3 boards. This tread helped me a lot , and I was able to fix 2 out of the 3 boards. Sure enough a bunch of tracks were sent to the 9th dimension and I had to do some heavy sewing but things went quite well. So now I'm left with one module with an error on U2 U13 and U64 U67. This seems not to be related to corrosion and may have occurred a long time ago. maybe a faulty DRAM of bad Xilinx chip. I guess I'll have to build an extension cable and use my Tek LA to troubleshoot that one. but I still have an issue with the allegedly good boards : they both pass all the tests individually (with vp and the GUI) , but my 16702B throws an error when using pods 3 and 4 of the master card when it's used in multicard configuration. The other one works just fine on all 4 pods the thing is that when vp is ran against a multicard setup it relies on the master, and tests the expander through it. weirdly enough , the failing pods 2 and 3 are located on the master card , and it passes all the self tests... I'm a bit lost here |
| hackwell:
A quick follow up to my previous message : I found another open track which was responsible for the memory error of my third card. It was located between the 2 FPGAs. It seems that this interconnection is used to access the whole memory space from the backplane bus , if it makes sense |
| MateKrisz:
Hi MarkL, I little waiting because of I ordered a HDMI 51mp microscope and I would like to check the traces after this is arrived. I tested the PC100 RAMs, I have two module, both is 100% tested with Memtestx86. So if need spare memory IC I have lot of. |
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