Hello,
I'm also in the 16702B help wanted category.
Just purchased one from ebay (listed as working) shipped from the USA to UK. (Cost of which was greater than the analyzer).
It arrived slightly battered looking.
Switched it on, the analyzer booted and ran for long enough for me to play with it before shutting down and restarting. When it rebooted it again ran fine for another ten minutes then shut down and rebooted. Each time it rebooted the run time reduced. Occasionally it would shut down and not reboot just sit with the blank screen and the power led flashing and touch switch at red.
I contacted the vendor and he's appologetic and asks me what I want to do. Due to shipping costs returning the unit isn't an option. If I find faulty parts he may help out?
I have so far replaced the CMOS battery which was at 0.3V. Funnily enough after changing the battery the analyzer ran for a couple of hours.
Then returned to the shutdown/reboot
Initially when the analyzer was booting it was failing two LAN config self tests. After changing the battery the LAN tests are passing. The LAN card has to be removed to replace the battery so I can only assume the re-seating rectified the issue. I have not attempted to connect to the remote interface.
I have ran the self test procedures from the main operating admin tab, which passes all tests so long as the analyzer stays on.
I've set correct date and time
I have installed the 1k resistors on the PS2 interface and have a functional keyboard. Checked the BIOS settings which appear to be fine.
Tried disconnecting the hard drive, CD rom, and floppy drive each at seperate instances. Held the boot at start up and the analyzer still shut down.
I have had the front panel off and straightened up the aluminium mount, checked the connections. Removed the PCI card and CPU card and given them a visual inspection. Checked power supply voltages etc.
Last night just using a multimeter I was probing the what I assume is sense connector on the top PCB which comes from the power supply. Noticed the 3.3V supply would dissappear. Was just probing into the top of the connector and my connections weren't fantastic but I'm pretty sure the voltage dissapeared at a couple of points. I also heard a relay click during reboot.
Stripped out the power supply and had a look at it.
So I think the 3.3V side is shutting down but not staying down. Output measures 3.4-3.5V on the sense connector while running and while at black screen after shut down.
The power supply is a Celestica Series 7000 modular PSU. There are two parallel units on the 3.3V side. I've removed the modules from the main PCB housing. Visual check of both of the 3.3V units but nothing obvious.
I was hoping to load test the individual modules to identify the faulty one. Would also check the other modules aswell. Each module plugs onto an 8 way standard 0.1 header four of those pins are for the 360V DC input the other four I'm not very sure about? Two of them are connected in series, module to module and appear to go to the coil of a relay inside the main PSU assembly. Which would tie in with the clicking I heard on reboot.
So I may be able to use them to test for opening while load testing to see if an individual module is at fault. The other pair are a mystery I assume they are a command on signal?
If I knew for sure the pin out of the modules it would be very helpful, difficult to test the unit in the chassis.
The alternative to testing the modules individually would be testing them in the PSU frame but I'd have to know the pinout of the standby supply which has a five pin connector which I imagine must be standby output, fault, startup of some kind?
Does anyone have details, schematics for these power supplies.
Any help much appreciated.
Jim