| Electronics > Repair |
| ADVANTEST R9211B |
| << < (23/39) > >> |
| m k:
Pretty clean. Change Pattern back to xxxx and remove all triggers. Put Advantest on and wait text on screen. Then tap Run. If picture is still empty totally different than original pictures go to System Configuration menu and change Analyzer. Maybe POD 1/Analyzer 1 connection has a problem. You must turn active analyzer off first if you want to use POD 1 with Analyzer 2. If POD 1 and Analyzer 2 is not possible change to POD 2. If POD 2 and Analyzer 2 is ok try POD 2 with Analyzer 1, if possible. |
| stfjohn:
I've tried every possible combination, but I always get more or less the same image. |
| m k:
If you compare this last one and first of reply #107 you'll see that generally they are the same, but details are different. Even that both are supposed to be from the equal moment. I'd say that HP is doing its own. So are we now swapping the repair project? It can be a simple contact thing. We know it worked. |
| m k:
Previous empty waveforms display informs that the machine can possibly read what is coming in. All pins are more or less the same, so Pattern xxx1 is never happening. No error messages from the machine, so problem is more likely close to PODs. The service manual I found online doesn't have schematics, but power supply voltages seems to be there. Maybe one voltage for PODs is missing, or has lost its filter capacitor. Other "easier" possibility is a POD clock. Seems that Timing format uses internal 100MHz clock, maybe it's bad. Change Analyzers to State format, then POD clock can be selected without a doubt. Connect POD clock to CPU CLK pin 15 and POD 01 to CPU E pin 20, it's 1/10 of CPU CLK, 40/60 up/down duty cycle. Leave other POD pins as they are. Put Search Pattern as 0000 tap Run and turn Advantest on. If POD is working you should see an empty display, POD 00 A22, POD 06 R/_W and any _CS pin can't be all down. If display has a rational data the lowest byte should have that 40/60 pattern first and later it's more scrambled. If display has 0000 and FFFF with some hiccups the error is still present, but POD clock is also present. |
| stfjohn:
Here last images, |
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