Philips 630 a service manual 1

Page 2

m6

Under-cliassisview.
The undersidcs of
the two condenser
blocks are indicated
zind marked A
and B." It is in
the position shown
hue that they are
Viewed in the draw-
ings showing the
connecting panels
in culs. 3 and 4
overleaf. The con»
atruciiun ol the
special tuning and
trimming con-
densers (.35-C46 is
de 'ribed under
(iciicral Nules."
Resistances R25
and R26 are wire
wound.

Eiivfi an i

z:
m

7:
a»

RE»

high impedance external Sptllkcl b)
sockets across the output at (:31, 632.
while swnch S1 permits internal spfilkfl'
to be muted if desired. Fixed lone «,m-r
recliuii by 030. Only part 01 L10 is nsmli

HT current is supplind by lull wavi-
reciilying valve (V6( Philips 1821).
Smoothing by il'olerUlEd U|I0i(( L12 unu
I'EbiaLallCe R215, in negative li'l' [mill in

Supplement In The Wireless {Er
Elgnriral Trader, August 29, 1932

VOLTAGE ADJUSTMENT P NEL

rluissis, flllii LOUlitllSCI: C33. (:34, Fuse
F1 piouzcls tin mains inan circuit in
mm? of {lLClIIcllifIi a: :1 circuiL

(1B polaulinl for V3 iWil giiiimliliniio pm: up willy) aw] V4 is ()1)
[Mind mm (linxi :ilnn; R26, whik HR
fur v5 ls Miami-ll from a lapping 0n
Lu {\lli cumin»: the (ii-up m.- R26
(Illli [ml of Hull al'lUSS L12.

(.ircuit diagram m
[ilC Philips 630A

Superinductnncc i
rcccivcr. Thctnncd
circuits :issucinlcd
with the aerial in-
put and Rl" ampliA

:Cu

fier are both band,
pass filters. ll
shnuld be nmml
that, although the
enrrhy ends nf thew
circuits are rammed
t0 chassis via 0-
densers C7 and (:8.
they are not a!
chassis pmsnlinl in
DC, and this zip,
plies [u the scrccnx
ml the gang cnn~
densnrs, R4 is [he

gain control, and
R5 is Vi tixed (ill
rcxisnmx. N m e
Lhui R2, R3 and
R9 Rm are um
pniemidl divvdrrs
goniiected in
pamllcl, and are re,
rurnerl [U clismis

\ia R4. The unipni
lrnni V5 is clinke-
( fllxily :oupisd lo

\ } \ 'ill i'onliiiiig condui-
.

58

PHILIPS
630A

lUN [ll Valfllb

. - lop " coupling (onllur

5

i humulll{

. rimming cUnLILnul's .

l l \ l :I decoupling

i . Vl wuiorlc ll; pus

\ i \I auntie (llxmmlilliz

l'l l'rip " Iuupliim lzol'ldl 7

301 ..

isiiui , miss imimiii' {
unwinding crimlrllwh

v 1 (li mndeusm

' \G decoupling

mixll m-couiilinu

* iillhmlr l)_V-plhfi

\ llUlil'LW'll'illllllLl'

\ l (H cmldi'neul . .

\ finlludl dzrnllpling .V {

- i; l nil-pi. ilJlldA'liiltJ

l'nm cnmml enmiuusm.
\' i m H AF muplinu
\l iimdv decoupling
\i cu lil'lOuplillu
\' | in \', AF r-ouplim
Ill" iwqmsa
\' .ll. llemunlinu
i". Ilii'l'mlplillfl
in." llllvl COHdI-llrel
~|~ ku- isollllinu mm
mum-s .i
} II I ~lllUUhhiIiu Iluliilll~ i
«ii.

I; l' lil'l. I,\V ll Illml'l

ii v v MW mum.
Ind-[ill pn (lining

; n. LWUininiw ,
l\l\\' Lrlmmor V.
1mm pm - .l\|ll|nu
ill I) LWliilIiInM
I: F lS-l pri. iiw n-mmi-i
in ll- p Iuniri. V
iii Inna iinrimlIi l
I: ii nix. l'. .\l\\ minim
It I" ll-l' w. mum

Variailrlcl l Pli":Ll.
"In ('ondcnaer block L"
E In candenner block ' B."

:1 liniliil

now im
U'Ilfr

U u:

l l3

0 5

ii I.

l) in mm

I) 0
n
(Tomi,-
0 :3

ll 5

ll :.

n n um:
nu lll

l n

l U

n ll"

ii will;
ll w
n m
u.
u 5,
U ll..

u my
ii-,
u»

u nil-3

'l 2

l ;

pH

1-0

H Uill w-
ll 14 Hi
ii-ui ,
mm w
J n li l

u n uni
in» in):
u ,i Ill ll
n n r. (a
n ill! in,
n nun l.
i) Illll