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Post by mastertech on Mar 2, 2014 21:21:43 GMT -5
If you cannot get at the connectors with your test probe at the amp board you can follow the harness and see if you can test at the other end. To late tonight to get into testing so i will update tomorrow.
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nashou
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Post by nashou on Mar 2, 2014 21:23:38 GMT -5
K
I'll be home after 4pm or so.
Nashou
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nashou
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Post by nashou on Mar 3, 2014 17:13:34 GMT -5
Ok mac where do I jump the the relay? I tried what I thought was pin 1 to 2 of the relay shown here but I got the same result.  Attachments:
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Post by mastertech on Mar 3, 2014 17:39:53 GMT -5
You were correct to jump pins 1 and 2. There is no need to attempt to turn it on. It is on even though there is no display. You can begin testing. Just remember when it is plugged in, it is powered up. Be careful.
Test for B+ and B- and the output of Q417 first.
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nashou
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Post by nashou on Mar 3, 2014 17:41:16 GMT -5
You were correct to jump pins 1 and 2. There is no need to attempt to turn it on. It is on even though there is no display. You can begin testing. Just remember when it is plugged in, it is powered up. Be careful. Test for B+ and B- and the output of Q417 first. I added a pic is that right place? |
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Post by mastertech on Mar 3, 2014 17:44:27 GMT -5
Just check for full AC on CP302.
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nashou
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Post by nashou on Mar 3, 2014 18:09:35 GMT -5
Ok I got about 54 +/- VDC on HighB+ and HIGH B- respectfully and I measured the one side of R493 as it was easier to get to than the center leg of Q 417. I hope that was correct. That measure -54 VDC as well.
Nashou
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nashou
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Post by nashou on Mar 3, 2014 18:15:30 GMT -5
Oh and I found the values for the Protection circuit. Page 45 and 46 of the manual.
Normal is 3.3v
TR DET 0
RADI DET 0
ASO Protection 0.83V
DC 3 and 4 is 1.39V
I have not tested yet
Nashou
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nashou
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Post by nashou on Mar 3, 2014 18:38:52 GMT -5
Ok
TR DET= .259
RADI DET= .259
ASO DET= 0
DC DET3=1.5
DC DET4=1.255 that is the white wire which is on the bottom. I measure on the CPU Assembly connector.
nashou
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Post by mastertech on Mar 3, 2014 19:06:11 GMT -5
Test for any DC on each pin of CP402.
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nashou
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Post by nashou on Mar 3, 2014 19:28:31 GMT -5
Test for any DC on each pin of CP402. Yep DC on all , 53 VDC Nashou |
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Post by mastertech on Mar 3, 2014 19:33:37 GMT -5
is that + or -?
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nashou
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Post by nashou on Mar 3, 2014 19:42:10 GMT -5
Plus
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Post by mastertech on Mar 3, 2014 19:49:04 GMT -5
Look at the schematic for Q417. You need to verify you have app. -54v on every leg. You can test on surrounding components if you cannot get at the legs. let me know.
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nashou
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Post by nashou on Mar 3, 2014 19:51:38 GMT -5
Ill need to yes surrounding components. To get to legs i have to go through R493
Nashou
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