Philips GC 012 - Maintenance and Technical Information; Routine Maintenance and Care; Replacing the Stylus Unit; Other Cartridge Compatibility and General Info

Other
pick
up
ca ridges
with RETMA standad
With lhis
record
playeÍ
is à smêll bêg conlaining:
à mounring
plále,
screws,
nuts, distancê
pieces
áncl a
jis.
Ïhe
jig
is tó
check
that
thê slylus
is in
lhe coÍect
posilion This is achieved
by moun!
ing lhê cêrlíidge
with distênce
pieces ánd
screws
lo lhe
pate
in such a
wáy lhat when
the
plale
and canridge
êÍe slid
into the slots
ol the
I
g,
lhè sly us
is e,àcl
y in thê V shèped
cul out
ol rhe
j,g
(Fig
61. The
sdês oí
rhe càrrÍidge
should be
pàralel
to rhe
lines on the
uPpêÍsde
When this
ádiustment
is
coÍrê.I
push
the termi
nêls oí
the coLoured
wnes on the
tags ol lhe car
lÍidge.
The coding is as
Iolows:
Red
Íight hand channel
While
lelt hand chánnel
Green
right+afd
retuín
Blue
lelt hand
return
Sllde
pale
and canridge
into lhe
headshel Gig
3,
B).
Reolácement
oI
rhe srylus unir
Puit the support
with the
pick-up
cêrtridge
out ol
the headshell
(fig.
3, A).
Take the
plare wilh caÍ
l dge, upside
down, in lhe
lèlt hand and
lakê the
slyus unil
wilh lhumb
and lore finger
oÍ the righl
hand Glg.
7). Now
pul
il careluly
straighl out
ól
the cárlidge
wilhoutjêrking.
Slide
the new stylus
LnirskàLghrènd
wrholl
jerirng
n'o lhe cêftridge
.nd sde
the suppoÍl
w rh
cartÍdge
bècl
inlo
ihe
Slylus
]oÍce s
lhe veÍlically
dnected downward
íorce wirh
whlch the slylus
Íêsls
in the record
qÍoove.
h is
essential
lhal
the stylus
torce Íecom
;êided by
the manulacluÍêÍ
is applied.
Forces
higher as
wêll as íorces
lower lhan
indicaled bv
the mênuÍàclurer
willeád
lo inÍerior
Íêproduclion
ánd even
groove
delormalion.
Slyus
lorce is set
by means
ol the slide
wêighl on
lhe
pick
up arm
állêr this is balanced
with the counlerweiqhl
Si.lè
thtust cmpehe
an
Side
thrusl
ls the lorce rhê1
causes
the
Prck
up
àÍm lo
móve lo the cenhe
oí
lhe Íecord Ás
a
consequencê
oí this
the slyls
tiP is
pressed
aqanstlhê
inneí
sidê oí the
groove
which
Íesuls
i;inlerior
Íacking ot the
ouler
groóve wali This
resulls
in more dislorsion.
To
prêvênt
this dislorsron
lhe
Plàyêr
is equiPPêd
^ n "n cdiu<ràblê
"ioe
ll;us, .orpen
a'or
thè
bpe
ptàtè r'siuàtcd und't the
tutnt-ble
which applies
á
presêt
lorce to
the aÍm counleF
êcring this
phênomenon.
Side
lhrusl is
pÍoporliona
10
the styus lorce and
dependent
on the type ol
the stylus used GpheÍi_
Photo eletíonic
auta-stop
The
pholo
elecÍonic
aulo slop
is actuated by
the
íáte ol inlerceplion
oï a lighl beam
stÍiking a
pho_
lo-sênsilive cadmiLm
sulphicle cel.
When
this
rále êxceeds
à
ceÍlain
value, a
bi-sláble
multivi_
brátor ls tÍlggered
which cuts off
the molor supp_
!y votage.
Thls swilch oí is
peíormed
withoul
ány mechanicàL
íor.e, hence
'thumping'
ánd
other undesnêd
eíecls 6ànnot
occur.
anolher
advanrage
is Ihêt the
pick-up
may be
pêcêd
over any
part
oJ the recoÍded
suíêce
wilholt lhe
íisk ol
pÍêmàture
switch-oí.
Elechonic
speed conhol
The
molor speed
oÍ this record
plêyer
ls con_
linuously conÍolled
and kept conslanl
by
solid
sláte circuils
ln combination
wilh a lacho
genèr
aloÍ which
ls dnêcly couped
to the molor
shêlt
ln thls
way ê high
grade oi
precision ànd
grêal
rèliêbility
is áchieved.
The íully slabillzed
cncuils
êÍe
not innLencêd by
fiuctuatiofs
ol thê malns
vohage
and êíe unaÍfecled
by chêngês
in malns
The turntabje
ánd the
plck-uP
árm aÍe
mounled
on ê sub chàssis,
which
is dànped, sprong
sus
pended ÍÍom the rigidy
mounted
maln chassis.
This conslruclion absoÍbs
mechanicál
shocks
ênd external
vibralions.
ll also alows
more ac_
curale
cueing ês
the movements
oí lhê arm-lllt
lever do not caLse
àny dlsplácemènl
ol
lhe sLb
Speed
adjustment
Ènge
Rumble {DlN
8)
<
-62
dB
0
4gl
5
_)