Akai X-360 Service Manual

4.
RECORDING AMPLIFIER
ADJUSTMENT
Recording Amplifier Adjustment should be made only
after Head Adjustment (vertical and horizontal azimuth)
and Playback Amplifier Adjustments have been
performed.
a)
b)
c)
d)
e)
p= }e-O
output
level
Load a blank test tape (Scotch No. 150) on the Tape
Recorder.
As shown in Fig. 2, connect an Audio Oscillator and
Attenuator to the Line Input. Connect a High-
sensitivity V.T.V.M. to the Line Output.
Set the Tape Speed Selector to “7-1/2” and the
Monitor Switch to “TAPE” position.
By using the Audio Oscillator, supply a 1,000 Hz
signal. Set the tape to transport, and the Record
Interlock Button to recording mode.
Adjust the Line Level Control so that the VU meter
needle indicates “0” (white dot).
Set the Monitor Switch to “SOURCE” position.
Adjust the VR28-1 (semi-fixed resistor, 20 K—B) of
Recording Amplifier Board (RD—528) so that the
VU meter needle indicates ““O”’ (white dot).
Rec. Amp. Board
TR28-1 TR2&-2 TR28-3 TR28-4
us
Line Line
Input Record Level
Control
| OOHz I KHz 1 OKHz
freqency response
Fig. 3
TR28-6
--—— RH.
AK 1206
20KHz
Play back Amp. Board
TR29-3. TR29-4 TR29-5 VU. meter
f=g=0.2mm~0.3mm
Fig. 4
10

Akai X-360 Specifications

General

Brand	Akai
Model	X-360
Category	Measuring Instruments
Language	English