Grundig Musik Boy 40 RP 4200 Service Manual
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Page 1
Service Document
Exchange Set
Musik Boy 40 RP 4200
Service
Manual
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Safely
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nummer720108000000,sowiez sfitzlidi disman-
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The regulations and salary insnuoiions shall be
valid as pmvidod by ihe "Solar Service Manual,
pun number 720108000000, as we as the
respecfive nulionul deviations.
Diaes Service Dokumem is! nur in Doienfomi verliigbar
This Service Documen' is only available us Join
Anderungen vorbehullen/Subiecl to uhemfion
Made byGRUNDIG in Germany I H-543 0802
hnp://www.grundig.oom
GRUI'IDIG
Page 2
ING SONY IC CXA1191 WITHOUT FM IFT
ALIGNMENT PROCEDURE
MODEL NO.: GRUNDIG RP4200
IENTS REQUIRED GENERAL PREPARATION
Generator 1. Check souroe voltage, DC or AC according to specifioaions
|nal Generator 2. Set function switch to band being aligned
l IF Sweep Generator (10.7 MHZ for FM) 3. Signal input should be kept as low as possible to avoid AGC and AFC tunction
4. Standard modulation: AM 1 KHZ 30% mod
scope FM 1 KHZ 22.5 KHZ dev
:ncy counter
lted DC power supply
\LIGNMENT
5'6" SOURCE (AT?) RF 69" CONNECT SET SIGNAL TO ALIGNMENT INDICATOR (Oscilloscope, VTVM) CONNECT To SET RAT'gO D'A" ADJUST ADJUST FOR REMARKS
TP 4
A standard radiation 460KHZ Detector output terminal Quiet Volume control at
loop and ground Point T 2 Maximum min. position
Repeat step 1 for max. output
tLIGNMENT
9| requires no FM IF alignment as the IF is fixed by ceramic filter and discriminator CF 1 & CF 2. Please take note that correct type and same color dot of ceramic filter is used
9, diff color dot of ceramic filter may cause worse IF '8' curve characteristic and distortion.
F genescope output terminal to TP 3 & TP 2 (GND) in series with a 100 Pf capacitor, connect scope input terminal to TP 4 & TP 2 (GND), then the IF characteristic curve can be
G Ru I'l DIG Musik Boy 40 RP 4200