[Jukebox-list] A better understanding

[Karl]

I like it when there are at least two levels of manuals.....the first level
telling a simple logical path to follow to determine which component is most
likely to be causing which problem and the next level going into more detail
including schematics to aid in the repair of components but also more in
depth diagnostics aimed at techs for problems not resolved at the first
level. I might have developed a fondness for this type of manual system from
time spent repairing military weapons systems.

Karl
Columbus Coin-Op Shop
2061 S. Lumpkin Rd
Columbus, GA 31903
Shop (706) 507-2963
----- Original Message ----- 
From: "Don" <dontutt at telus.net>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Saturday, July 01, 2006 11:59 PM
Subject: Re: [Jukebox-list] A better understanding


> Wes,
> I's likin' your "stirrin the pot".
> As and electronics tech with years of experience in service and design my
> ears always perk up when I see your post...... maybe I might learn
something
> new, er I mean old and of great value.  Enjoy the banter and humour too!
> One of my fields was installing and servicing medical xray machines for
the
> Dutch Philips company operations here in BC and Alberta (Canada). Philips
> had their stuff made all over the world and typically they would produce
ONE
> manual for a machine...... and that damned manual was written poorly in
> three languages.  So it was three times as thick as I needed it to be and
> contained only one third the info I might have liked to have on days in
the
> field when I had the blasted machine in pieces on the xray room floor and
> could not figure out what the heck the "engineers" meant by what they said
> in their twisted Dutch and German influenced English.
> So it seems some jukes and Philips xray machines have one thing in common,
> poorly written service manuals. I got a chance to write a service manual
> once and I made sure it was thorough and logically laid out.
> My point is..... we have the manuals we do and it is really nice to have
> knowledgeable folk like all you guys on here to toss around the facts and
> fictions of jukes and occasionally..... other stuff.  You really put a
> personal touch on the dry and occasionally unclear  manuals.  Wish I had a
> group like this when I was servicing those xray machines.
> Keep up the fun and information. No complaints here Atall.
> Don
>
>
>
> ----- Original Message ----- 
> From: "Ron Rich" <ronnnrich at yahoo.com>
> To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
> Sent: Saturday, July 01, 2006 4:49 PM
> Subject: Re: [Jukebox-list] A better understanding
>
>
> > Wes,
> >  I's shamed of you--"stirin the pot" again. The "why" in jukebox (and
> > almost all other manufactured things), is COST. What happens, in my
humble
> > opinion, is following things--'Marketing" dictates what it will/should
do,
> > and fit (cabinet style/size), engineers design it, and the "production
> > people" are charged with the cost of manufacturing it--It then becomes a
> > "game"-engineering says to do it thisaway, marketing says do it for this
> > cost, and production says that is impossible--OK, says engineering, if
you
> > "cut this" it will be less expensive--production says, you can also save
> > time ($$$) by doing this--marketing says "will it still work?" and
> > everyone agrees that it will "still work"--then, if the company has a
"QC"
> > dept--all hell brakes loose--and "stuff" is put back in because, after
> > all, if the "QC" dept engineers do not find anything to "fix", why do we
> > need that dept??--And then again, if the engineering dept can't come up
> > with a "re-designed" widget, why do we need
> > an engineering dept.?? --Also, we don't want to make it "last forever",
> > 'cause, we need future sales---
> >  ( I have heard RUMORS that the 3400 mech was much less expensive to
> > produce as compared to the 3300. Also have heard that, other then the
> > motors, it was made in Germany, and assembled here--don't know if true
or
> > not)
> >  Ron Rich
> >
> > Wesley Dean <wesleydean at cox.net> wrote:
> >
> > I have taken the liberty to stray today.
> > I have always believed that to better understand the workings of any
> > device is to delve into the motives of the designer. Start by asking
> > yourself WHY?
> > For instance why did Wurlitzer abandon a perfectly reliable mechanism to
> > use one that was very hard for servicemen to understand. If you examine
> > the last good mechanism on the 3300 series, you will see that the
> > mechanism could not be placed any lower in the cabinet when the trend
was
> > to produce low profile cabinets.
> > The obvious answer was to use a different mechanism. They opted to use a
> > design that the German Wurlitzer people had been using for some years.
In
> > their efforts to correct this disaster, they made small changes each
year
> > until they gave up and stopped trying.
> > The German technology was too alien for the American servicemen. Other
> > American juke manufacturers used designs that were easily adapted to the
> > new trend. That may be why all of them survived longer than Wurlitzer.
> > One problem with most mechanical devices is inertia. Once anything is
> > rotating and is required to stop precisely and not randomly requires
some
> > method of braking. With AC motors either a kick-out armature or some
kind
> > of stop is used. What is rarely used on AC devices are dynamic brakes,
> > while most everybody uses on DC motors. I have often wondered about
this.
> > Now the automotive engineers are using this principle in hybrid designs.
> > The inertia of a vehicle of this type is directed back into the energy
> > storage devices.
> > I am trying to start some controversy among you people. Wes
> >
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