Grundig Musik Boy 40 RP 4200 Technical manual

Musik Boy 40 RP 4200
Service Document
Exchange Set
Es gelten die Vorschriften und Sicherheitshinweise
gemäßdemServiceManual"Sicherheit",Material-
nummer720108000000,sowiezusätzlichdieeven-
tuell abweichenden, landesspezifischen Vorschrif-
ten!
The regulations and safety instructions shall be
valid as provided by the "Safety" Service Manual,
part number 720108000000, as well as the
respective national deviations.
S
Dieses Service Dokument ist nur in Datenform verfügbar
This Service Document is only available as data
Änderungen vorbehalten/Subject to alteration
Made by GRUNDIG in Germany • H-S43 0802
http://www.grundig.com
S
Service
Manual
Sicherheit
Safety
Materialnr./Part No.
720108000000
ǵ

Musik Boy 40 RP 4200
ǵ
SING SONY IC CXA1191 WITHOUT FM IFT
A L I G N M E N T P R O C E D U R E
MODEL NO.: GRUNDIG RP4200
MENTS REQUIRED GENERAL PREPARATION
Generator 1. Che k sour e voltage, DC or AC a ording to spe ifi aions
gnal Generator 2. Set fun tion swit h to band being aligned
M IF Sweep Generator (10.7 MHz for FM) 3. Signal input should be kept as low as possible to avoid AGC and AFC fun tion
4. Standard modulation : AM 1 KHz 30% mod
s ope FM 1 KHz 22.5 KHz dev
en y ounter
ated DC power supply
ALIGNMENT
SIGNAL SOURCE (AM RF Gen.) CONNECT
TO SET SIGNAL TO ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT TO
SET RADIO DIAL
TO
AD UST AD UST FOR REMARKS
TP 4
A standard radiation
460KHz
Dete tor output terminal Quiet Volume ontrol at
loop and ground Point T 2 Maximum min. position
Repeat step 1 for max. output
ALIGNMENT
el requires no FM IF alignment as the IF is fixed by erami filter and dis riminator CF 1 & CF 2. Please take note that orre t type and same olor dot of erami filter is used
ng, diff olor dot of erami filter may ause worse IF 'S' urve hara teristi and distortion.
F genes ope output terminal to TP 3 & TP 2 (GND) in series with a 100 Pf apa itor, onne t s ope input terminal to TP 4 & TP 2 (GND), then the IF hara teristi urve an be

Musik Boy 40 RP 4200
ǵ
A L I G N M E N T P R O C E D U R E
MODEL NO.: GRUNDIG RP4200
FM RF ALIGNMENT
STEP SIGNAL SOURCE (FM Signal Gen.) CONNECT TO SET SIGNAL TO
ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT
TO
SET RADIO DIAL
TO
AD UST AD UST FOR REMARKS
L 4
1
87.35 MHz (Lowest end) stret h or
(modulated) squeeze
TP 1 108.25 MHz Terminals VC1 B Volume
2
through mat hing network (modulated) a ross speaker (Highest end) (Os . trimmer) Maximum ontrol at
if ne essary voi e oil L 3 (RF oil) max. position
3
88 MHz 88 MHz stret h or
(modulated) squeeze
106 MHz VC1 C
4
(modulated) 106 MHz (RF trimmer)
5
Repeat steps 3 and 4 as ne essary to minimize tra king error and also steps 1 and 2 if ne essary
AM RF ALIGNMENT
STEP SIGNAL SOURCE (AM Signal Gen.) CONNECT TO SET SIGNAL TO
ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT
TO
SET RADIO DIAL
TO
AD UST AD UST FOR REMARKS
515 KHz L 5
1
(modulated) (Lowest end) (Os . oil)
1640 KHz VC1 A Volume
2
A standard radiation (modulated) A ross speaker (Highest end) (Os . trimmer) Maximum ontrol at
loop ant. 600 KHz voi e oil L 2 max. position
3
(modulated) 558 KHz (ant. oil)
1440 KHz VC1 D
4
(modulated) 1440 KHz (ant. trimmer)
5
Repeat steps 3 and 4 as ne essary to minimize tra king error and also steps 1 and 2 if ne essary
SW RF ALIGNMENT
STEP SIGNAL SOURCE (LW Signal Gen.) CONNECT TO SET SIGNAL TO
ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT
TO
SET RADIO DIAL
TO
AD UST AD UST FOR REMARKS
5.85 KHz L 7
1 (modulated) (Lowest end) (Os . Coil)
TP1 18.5 KHz Terminals TC 2 Volume
2 through mat hing natwork (modulated) a ross speaker (Highest end) (Os . trimmer) Maximum ontrol at
if ne essary 6 KHz voi e oil L 6 max. position
3 (modulated) 6 KHz (ant. oil)
16 KHz TC 1
4 (modulated) 16 KHz (ant. trimmer)
5 SW band tra king needs pre ise alignment to a hieve best possible sensitivity. So repeat steps 3 and 4 at least 2 times, if ne essary also repeat steps 1 and 2

Musik Boy 40 RP 4200
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Musik Boy 40 RP 4200
ǵ

Musik Boy 40 RP 4200
ǵ

Musik Boy 40 RP 4200
ǵ

Musik Boy 40 RP 4200
ǵ