Daniel,
Do you mean R2? This is in the MG routing circuit! Suffice to say you
description of the reset adjustment sound correct. If the top panel controls
are set to default and you switched the 367 to test, but you can¹t get the
LEDs to positions 1 and 8 then have a very carefully examination of the
circuitry around IC33. If you have a logic probe confirm you have a pulse
train on data bus DO0-7 (pins 5 to 12). Also carefully verify all the
resistive values of the components around IC27 and make sure C28 is
correctly polarised. Also test the continuity of the test switch! If you
want a second eye on the board take a shot close up and post it for us to
see. Someone eagled eyed might see the problem.
If you still can¹t spot the problem. Let me know and I will measure some
voltages from a working board for you to compare with.
On my P6 the blue wire is tacked onto the left-hand side of J2. D1 is part
of a current limiting circuit before final 5v rail output. Therefore, D1
should not be directly connected to the blue wire! The best place is either
as I have described or sometime there is a pad on the output 5v rail in the
top left-hand corner of the PSU.
Hope this helps,
Andy
On 20/08/2010 23:28, "Daniel A" <apophis93@yahoo.com> wrote:
>
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>
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> Andy,
>
> 367 - The P6 is setup as shown in Fig 1 of the service manual.
> I have complete both the P/S adjustment which was slightly off before. And
> step (1) of which I had an issue but was able to get the LEDS to go from just
> A and 1 to all of them lighting up using the 56k res and adjusting VR1. after
> removing the 56k just A and 1 remained on. I did have some wrong components
> installed original including R2 which is now correct and original part from
> old board. I just did a test with my DVM and in a previous post you stated
> that the voltage should be 3.9v with the 56k in place. I am registering a 4.6v
> on the right side of R2.
>
> 369 - yes it is a lone blue wire. So was the cut trace between D1 and J2
> intentional? If so where does the lone blue wire terminate? I understand it
> should be along the +5v rail just was trying to locate where it was soldered
> to before it came loose.
>
> Thanks in advance!
> Daniel
>
> --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Andrew
> Jury <andy@...> wrote:
>> >
>> > Hi,
>> >
>> > First off, make sure you have the top panel controls set as in section 8,
>> > figure 1 of the service manual. If the controls are set to anything other
>> > else then the D/A settings will be wrong/unobtainable.
>> >
>> > Is the connection you mentioned in the power supply not just the additional
>> > 5v rail which drives the MG LED? This would have the lone blue wire
>> > connected to it at some point.
>> >
>> > Cheers,
>> > Andy
>> >
>> >
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