Grundig freaxx 20, Руководство по обслуживанию

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GRUNDIG Service FREAXX 20 RRCD 4202
2 - 3
Adjustment Procedures
1. Cassette Deck
Measuring instruments/equipment: Frequency counter, AF voltmeter, wow and flutter meter, e.g. Fe test cassette 449.
Connect the frequency counter to the headphone
socket .
Play test cassette 3150Hz (e.g. 449).
Connect the wow and flutter meter to the headphone
socket . Play test cassette 3150Hz (e.g. 449).
Connect the AF-voltmeter to the headphone socket .
Play test cassette 8kHz (e.g. 449).
Connect the frequency counter to connector CN207A
Pin 1 / Pin 4 (GND).
Insert a recordable cassette.
Function: Record-Start.
With adjustment control (in the cassette motor) set the
frequency to
3150Hz
±
0.1% .
Deviation < 0.35% (aurally compensated). Playback
measuring time
≥
30 seconds.
With the head adjustment screw 1 set the
left and right channel to maximum level .
The levels of the two channels must not
differ by more than 3dB.
Set the frequency to 62kHz
±
1kHz with L201 .
1. Tape speed
2. Wow and flutter
3. Head gap angle
(Azimuth)
4. Bias frequency
Adjustment Preparations Adjustment Process
Bandgeschw.
Tape speed
1