Akai M-10 User Manual

VIL. AMPLIFIER ADJUSTMENT
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VR-l02 2k8 VR-101 20kB
RIGHT REC RIGHT PLAYBACK
LEVER ADJUST LEVER ADJUST
1. PLAYBACK OUTPUT LEVEL
(PRE-AMPLIFIER) ADJUSTMENT
a) Connect a high sensitivity V.T.V.M. to the Line
Output Jack.
b) Set the Tape Speed Selector Switch to the “7-1/2”
position.
c) ‘Playback at 250 Hz pre-recorded tape.
d) Adjust the VR 101 (semi-fixed resistor 20 K-B,
Fig. 7-1) of the pre-amplifier so that Line Output
Voltage indicates 1.228 V (+ 4 dbm).
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VR-102 2kB VR-IOL 20kB
LEFT REC LEFT PLAYBACK
LEVER ADJUST LEVER ADJUST
Fig. 7-1
2. ADJUSTMENT OF RECORDING LEVEL
Recording Amplifier Adjustment should be made only
after Head Adjustment (vertical and horizonatal
azimuth) and Playback Amplifier Adjustments have been
made.
1) As shown in Fig. 7-2, connect an Audio Oscillator
and Attenuator to the Line Input. Connect a
High-sensitivity V.T.V.M. to the Line Output. .
2) Set Equalizer Switch and Tape Speed Selector to
“7-1/2.
3) Load a blank test tape (Scotch No. 150) on the tape
recorder and set the Rec/Playback Knob to “Rec”
position.
4) Supply a 1000 Hz signal from the audio oscillator to
the Line Input, and adjust the volume control so
that the VU Meter indicates “O’? VU (intermediate
between red and black).
5) Record the tape and check playback to see whether
the- VU Meter indicates “O”’ VU.
6) If the pointer of the VU Meter fails to register “0”
VU, repeat recording and playback by adjusting the
semi-fixed resistor VR 102 (2 KB) on the recording
pre-amplifier until the “0” VU reading is obtained
both on recording and playback.
Line Line

Akai M-10 Specifications

General

Brand	Akai
Model	M-10
Category	Tape Deck
Language	English