null adjustment on my ts-850

[m3vuv]

hi all,im doing some work on my ts-850,can someone explain what it means on service manual page 103 section 24  null adjustment,its as clear as mud to me.cheers m3vuv.

[9aplus]

All is clear to me....
Adjust all trimers to minimum output... assuming CW mode without key down.
If level is as listed or bellow all is good.

[m3vuv]

firstly what does the "ENT 035" mean?,tbh it still makes no sense,does it mean i have to adjust tc-1 when its in cw mode with the car knob min and the send button pressed,then adjust tc-1 for min rf output?

[m3vuv]

was there a fault lol,in a word yes,i brought it from ebay as fully working,gave it to a friend to test as at the time i had no hf antennas up,it was only doing 12w max on tx,that was blown pa drivers,when i checked all the memory slots they were all 11m chicken band!,then had bad caps on the car board,low rx sensativity,that was a bad ic on the filter board dad digital transistor on the rf board,pll going out of lock when warm,bad display caps also,its been a lot of work so far,its working fine but,when i renewed the pa board and the other bad parts,i was working thru doing a realignment and cot stuck at the null section as couldnt figure out what it was sayying 100% so stopped there,its been niggling me ever since,it seems fine on air,what would the symptoms be of the null out of whack on air,ie is it worth bothering with?,also would that alter the atu matching range as this seems to match 4-1 swr ratios,thought they were only good to 3-1 max.

[m3vuv]

i gather then this has an afect on the operation of the atu then?

[m3vuv]

is the 50mv measured with a dvm on dc or ac range or an rf voltmeter,also is that at the tp 1 or ant jack?