This page was automatically translated from Japanese. BETA

Back to search results

View Original Web
Page

Remove frame

■CASIO DH200 repair description

Last update: 03/09/07

Digital horn recent
portrait

* In
beginning
DH200 which recently, former times was used was
excavated from the room. That, this DH200 time of the junior high school
student having in friend's house, connects the MIDI terminal of the
Electone of the friend MIDI terminal and digital horn, connects with [u]
[wa] [keburu] sound sounds! When it is enormous, the time where you are
agitated mono is. In a word to be enormous it is story before. Naturally,
after that I shifted in Yamaha WX11/AKAI EWI3000, DH200 the [tsu] drill
which is lent to the friend flew away to the far side of memory that way,
that (it is to be a in terrible state where but once being done, hurting,
it does, that especially it did not touch,…) you say return, but because
the Casio product of public unless there is a reason which breaks down at
this extent binding high, when it passes through electricity “the [gi]
[yu] - is” with, gives out the kind of sound which is scream, it has
become, is not, is? So, it is to have started throwing that way with
breakdown, but…
Unintentionally some days ago, the sight
where the repair method of DH100/200 is stated with the site of
Internet was found. In addition to this sight similar report has risen
with the sight of 2,3, “Squeak " you question and the lie arm…, you give
out the extent scream which becomes well, don't you think? is, you will be
the same as by yourself, or that with just a little it will try reading.
Of course, because this sight, description language is English, (method of
writing what C language may be, and > by yourself it may dishearten you
are to become, but if you look at the figure, because so it is simple, as
written,… without reading well securely, you corrected suitably. It tried
collecting the fact that I did then. Whether or not it becomes reference,
you report as difference. Furthermore, assuming, that you were repaired on
the basis of this page by yourself, broke your own digital horn this one
we are not concerned.

* Necessary item
It
is the necessary part, but below mono is necessary.

The solder, your solder [te], the tester (as much as possible one
which is better, is,…)

Radio plier or pincette

But the electrolytic condenser (above pressure-resistant 6V looking
at room, above 15V? As for capacity 33uF, as for this one use 47uF item
of 25V resisting pressure)

Failing, nature or it does not dishearten love, or those which can
be substituted in those

* Repair

First it begins from the fact that digital horn is dismantled. This is
simple, but it is serious as for we want noting, the screw of the [u] and
others of the speaker to be far well enough, to turn. There is a screw
even in the rear electric battery box. You will remove entirely. When so
it can dismantle safely, the following kind of baseplate is visible.

As for we want noting here you think and the [tsu] open up, do not crumble
up the cables. When [kore] is done, you put away.
Because so, the
screw stop of this baseplate are certain 3,4 places, please remove [sore].
Because because there is the repair point on reverse side of this
baseplate, is. Removing the screw, when you turn over, it becomes as
follows.

It is the place where the place where it encloses blackly has the
target of the latest repair. To tell the truth when it tries checking
respectively with the tester which can measure the capacity of the
condenser because also the other condenser the well enough useless [tsu]
[po] to be, unless in each case you exchange, being useless, because the
shank… with, this is not main thread, it goes next.

So,
expanded the place where it encloses with square is the mono this figure.
This C39 the condenser which is written seems like the principal of latest
" Squeak ". With it seems that is connected to the tip/chip, BU4066 of the
appearance. As for this IC, 74H (C?)Being the same as 4066 series, the
shank. It is generally known general-purpose CMOS-IC. If only [sore] you
understand, feeling at rest, the iron you can insert. <>As for this
condenser, 6.xV (it has stopped being able to read any inside) it is the
tip/chip electrolytic condenser of 33uF. Because the solder of the
tip/chip part how we would not like to do, it corresponds with the normal
electrolytic condenser. Some time ago the sight which is introduced being
like the Tantalum electrolytic capacitor it is used, the shank. The [ma],
in specified capacity has reached the one which in calling the shank. So,
it is method of peeling this chip capacitor, but it did as follows.

From both sides being pulled out with the relatively thin conductive
material, it increases the foot of the hip electrolytic condenser. If this
if each one side it peels, you take. First your solder [te] is applied to
the solder of the foot of the condenser of the one which we would like to
take. While and heating, that the knob it lifts with the pincette, you
say, or detrude on opposite side. When it makes also opposite side
similar, the tip/chip electrolytic condenser can take as follows from the
baseplate.

Here, the electrolytic condenser 25V/47uF which is prepared some time
ago is soldered. The dirty solder you say! Because (wry smile) the solder
was not enough, having the solder, it did again to pile up. Some time ago,
with the sight which is introduced it seems solder margin or that is
written in the hole of next door,… it does not make the air, (blast)

It is the baseplate after the soldering. This way when it does again
to assemble digital horn, because it strikes with the plastic part of next
door, it stands upright the condenser. The way try to be assembled.
It
is repair end now. Once, when it checks, whether the both terminal it does
not short with the tester, it is good, probably will be.
* Test playing
Connecting power source, you will verify.
I verified with the adapter for the Family Computer. When condition does
not heal,… the baseplate probably will be verified once more now. You drop
the solder into the strange place, being able to hurt, increase the cable
you are?
I where sound sounds without problem multi records tried
doing with digital horn with example.
Happy
treasure box (From Ys)
In addition whether Ys! With it may be
said, (the sweat) first sound recording schedule it is, to be light of the
glowfly, therefore disquiet before recording, however you stopped. When
digital horn ends, the ear (laughing) nevertheless, this digital horn,
noise be terrible. Is the AC adapter probably useless? Because the
capacity coming out of the electrolytic condenser in is terrible, perhaps
around there side the part the one which is exchanged is better. The power
circuit rotting, don't you think? so is,…
End

Reference sight:
Dorian's
DH100 Page