Blaupunkt Frankfurt 12V - Blaupunkt Frankfurt Alignment Procedures; AM and FM Alignment Steps

7
ALIGNMENT INSTRUCTIONS
AM AliGNMENT
.
Vo
lume coot r ol should be at maximum ~ Itloo. Outp ut of I! lgnOil gen e rat or !Sho uld be no hig hH than Jl t!£ c .s ary to obtain an output
read ing .
Usc
an In8ulated alignment sc r ll .... drlv e r for adju..-iUng.
DUMMY
ANlENNA
SIGNAL
GENEItATOA
~INC
SIGNAL
?f<'!i~~~~
BAND
SWITCH
PO .
RADI O
SE~~'
S G
OUTPUT
METER
ADJUST
REMAAKS
. 05mfd
Rlgh s i de to pin 2 (grid) of
e:CHBI IV3) . Low
~ i d e to
460KC
{.Oo-. Mod)
AM 550KC
Across Vo ice
coil
AI,A2
A3,A4
Adju8t for maxim um output
chalSbls.
Fig. I
Thru du mmy to ant c rilla
receptacle.
46 0 KC AM 550KC Ac ross Voi ce
coIl.
A5
Adjust far MlNlMUM output
Fig. I
Thru dummy to antenn a
r
ec eptacle .
IBI0KC
AM Tuning ga ng
lullyopen .
Across Voic e
ca ll
AO
Adjust for wwmum o utput
Flg . I Thru dummy to ant ellna
1400KC
AM 1400KC ACr Olll s V oic e A7
Adju st for mwo l um output
rec e ptacle .
Co
il.
Fig. I
Tbrl.l
dummy to antenna 600KC AM BOOK C Acroas Vo ic e AB,A9
Adju s t for maximum output
r ec epta cle. coil
Fig. I
Thru dummy to antenna
re c cptacle .
200KC
LW
200 KC Acr oall Vo ice
cot!
AIO , AI
Adjust fa r maximum ou tput
FM IF ALIGNMENT USING AM SIGNAL GENERATOR AND VTVM
c~ne c t two matched l OO K {! fG reaiJJ t(J rs In .G ri l!lI fo rm p oi nt ~ to ch u si s.
as !j hown on the schcmOlt.i c.
Ttl_
jun ctio n of the se two r es Is tors hi a llgnmenl polnl
DUMMY
ANTENNA
SIGNAL
~~J~'6'
SIC NAl
?REE~E~~g~
BAND
S~6'~H
RADiO
DIAL
SEnlNG
CO
NN ECt
VTVM
ADJUST REMARKS
2 00mmf .
High
side to pin 2 (grid) of
ECHal
(V) . Low s ide to
c
hass1 s.
10 . 7MC
(Unmed . l
PM
.-
PM
aOMC
DC
p($ e 10
poi
nt . CO mm o
to chas !l lti .
AI2,
AI
AI4,A I
Adlust lOr moaimum deUectl o n.
FIg. 1
Thru dummy 10 ante nna
recept<Lclc.
1O .7 MC
90MC
~~n~~ol~mon
to chaSSis .
AIS,
A17
AlB
Adjust for maAimum defl e cll fl n.
FIg. I
Thru dumm y to anl cn na
r e cept a cle .
10 . 7MC
FM 90 Me
DC
pr obe to
point B cQ:D1on
to point ,
AlB
Adjust (o r z ero re ad ") g. A p os itive
"'lid l1t.:g a tlve r C:ldlng will bt.. o bta l ncd
on e ither sid e of the corre ct tHHU ng .
FM IF ALIG N M~NT USI NG FM SLGNAL GENERATOR AND OO CILLOSC OPE
U se f re qu e ncy modul;l,t ~ .'I n al with S en. m od ul ati on and 450KC
~w c e- p . UI '-, 12 0'\. sawt oo lh voltage in a C ~1Il tor 11 0 rilOnlai de flecti on.
SIGNAL
RA DIO
SIGNAL
BAND
CONNECT
DUMMY
REMARKS
OIAl ADJUST
SWIT CH
ANTENNA
SCOPE
~~G~~~R ~AEEtg~~~g~
POS SEmNG
90 MC Vert Amp to Adjust lor curv e of maximum a mplitude
EC HBI (V3). Low !lide to
7 200 mmf Hi gh sid e to pin 2 (gr id) of FM All,AI3
10 . 'MC
(450KC AI4 , AI5 and symmetr y s imilar to Fig . 2
c
hu lIl • •
pOint<¢>. Low
Sweep) a id e to Ch a a, l lt .
V fl rt !Imp to Adjust for c urve or maxJmum I.I m plltud c
rl' cc pt ac le
Thru dumm y to :atl te nna PM iIOMe A18 , AI"
8. Fig. I 10 . " MC
AI 8
and sYO'Imetry similar to Fig . 2
sid . to Cha ss \1i .
.. Fig. 1
PO i 1it~>LOW
90Me Adjust 11 0 that 10 . 7MC O CC urs at cl!nter
T h
ru dumm y to ailt en n" 10.7MC FM AI.
Ve
rt ®p to
point . Low of cross o ver II ne~ 1!llm ll ar to rig. 3
1!lld e to Ch a.s s l .., .
r ~ct' p l a cle .
SLIGHTLY retouc h AI2 for max I mum
3Implitude and straightn e ss of cr os s·
ov e r U p." .
FM RF A LIGNME:NT
0
I
DUMMY
ANTfNNA
SIGNAL
~~J:t,~~.
SIGNAL
¥:E~~~g~
BAND
SWITCH
P~S .
RADIO
DIAL
SEntNG
CONNECT
V
TVM
ADJUST REMARKS
Fig. I Tb ru dummy to antenna
receptacl e
105MC
(U nmod . )
PM
10 5 MC DC pro be to
point~
Comm on \0
cha. lI!I ls .
A20 , A21 Adj u6t for ma xI mum defi e{: l\on.
Fig . I Tl lru dumm y to OI n te n na
r oce placle.
88MC
FM
SaMC
DC
pr~ to
point .
Co
mmon to
chaSS is .
A22, A23
AdjUBI fo r ma
:dmum dcflectl on.
I Wit h radi o I MUlIe d I tl COlT and ant f' l"lf1 a fu ll y r-. .u el1 d t>d, tu ne In.J. w (f;tX il lation 1li" !IJr 600 KC a nd Ol dju s t A7 for max i mu m vol ume .
,---- - ----'
I 20 I
TO I MMF t --------t TO
SIGNAL 0 ----' c=3 ANTENNA I ( I
GENERATOR]l 1-- -----...1 RECEPTACLE
I .JS I
l _____ I~M~J
FIG .
f1G.2
fiG . 3
I
I