GRUNDIG Service
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Abgleichvorschriften / Adjustment Procedures
M 19-C / M 29-C
2. Tape Deck
Measuring instruments/Test equipment:
AF voltmeter, frequency counter, Cr test cassette 448A Part No.: 35079 023 0000
Alignment
Preparation
Procedure
1. Azimuth
2. Speed
3. Erase oscillator
frequency
Set the left and right channel with the respective screws for
same maximum.
With VR605 (Deck A) and VR606 (Deck B) adjust for
3150Hz
±
60Hz each.
With T601 adjust for 100kHz
±
1kHz.
Access to the adjustment screws of the audio heads is
possible through small cutouts on the front panel.
If there is no suitable screwdriver available access to the
audio head screws can be gained better by removing the
cassette compartment covers (see point 5 of the
disassembly instructions).
Play back the 10kHz sound section on the Cr test cassette
448A.
AF voltmeter to Loudspeaker outputs.
Deck A and B:
Load Cr test cassette 448A and play back the 3150Hz
sound section.
Frequency counter to Loudspeaker outputs.
Deck B: Insert empty cassette, Record.
Frequency counter to TP1.
normal
reverse
VT
Frontend
ZF-Filter / IF Filter
FM
AM
AUX IN
Lautsprecheranschluß
Loudspeaker output
+
-
Pin 8
Pin 9
TP1
Deck A
Deck B
Tuner Alignment Layout
Cassette Alignment Layout