Technics RS-X101

HEAD AZIMUTH ADJUSTMENT (DECK 1/2)
1. Playback the azimuth adjustment portion (8kHz, —20dB)
of the test tape (QZZCFM). Vary the azimuth adjusting
screw until the outputs of the L-CH and R-CH are
maximized and the lissajous waveform, as illustrated,
approaches 0 degrees.
Note: If L-CH and R-CH are not maximized at the same point,
adjust to the point where the levels of each channel
are maximized and equal.
2. Perform the same adjustment in the play mode.
3. After the adjustment, apply screwlock to the azimuth
adjusting screw.
TAPE SPEED ADJUSTMENT (DECK 1/2)
Normal speed
1. Shift the edit-recording tape-speed selector to “X1”.
2. Playback the middle portion of the test tape (QZZCWAT).
3. Adjust Deck 1=VR902 and Deck 2=VR903 so that the
output is within the standard value.
High speed
4. Shift the edit-recording tape speed switch to “X2”.
5. Playback the middle portion of the test tape (QZZCWAT).
6. Adjust Deck 1=VR901 so that the output is within the
standard value.
Note: The Normal speed adjustment must be done before
the High speed adjustment.
E.HEAD R/P. HEAD
Azimuth Screw Azimuth Screw Azimuth Screw
(Forward) (Reverse)
{DECK 2) (DECK 1)
Fig. 2
LINE OUT
Digital frequency
counter
(DECK 2)Standard value: 3000 + 15 Hz [Normal (X1)], 6000 + 600 Hz [High (X2), only confirmation]
(DECK 1)Standard value: 3000 + 15 Hz [Normal (X1)], 6000 + 30 Hz [High (X2)]
PLAYBACK GAIN ADJUSTMENT (DECK 1/2)
1. Playback the gain adjusted portion (315Hz, 0dB) of the
test tape (QZZCFM).
2. Adjust Deck 1= VR3 (L-CH) [[VR4 (R-CH)]] and Deck
2 =VR5 (L-CH) [[VR6 (R-CH)]] so that the output is within
the standard value.
Standard value: 0.4V+0.5dB
PLAYBACK FREQUENCY RESPONSE (DECK 1/2)
1. Playback the frequency response portion (315Hz,
12.5kHz~63Hz, —20dB) of the test tape (QZZCFM).
2. Assure that the frequency response is within the range
shown in Fig. 6 for both L-CH and R-CH.
LINE OUT
LINE OUT
4-4 +508
|_|+3B
+208
ae 048
: ; —20B
4 --+}-|—34B
1 q
: HE —54B
T T
Littl
63Hz 100Hz 200Hz [s00Hz 1kHz 2kHz2 4kHz 12.5kHz
315Hz 8kHz
Fig. 6
RS-X101
ERASE CURRENT ADJUSTMENT (DECK 2)
1. Insert the Metal blank test tape (QZZCRZ) and set the unit
to the Record Pause mode.
2. Adjust VR301 so that the output between TP3 and GND ERASE HEAD EVM
is within the standard value. .
R301 10 (Electronic
Standard value: 190+5mA (Metal)...EVM Reading: 190+5mV Fig. 7 Voltmeter)
OVERALL FREQUENCY RESPONSE (DECK 2) Normal Overall frequency response chart (NR OUT)
1. Insert the Normal blank test tape (QZZCRA) and set the
unit to the Record Pause mode.
2. Apply a reference input signal (1kHz, —24dB) through an
attenuator.
3. Attenuate the signal by 20dB and adjust the frequency
from 50Hz~10kHz.
4. Record the frequency sweep.
5. Playback the recorded signal and assure that it is within
the range shown in Fig. 8 in comparison to the reference 50Hz 100Hz 200Hz 500Hz 1kHz 2kHz
frequency (1kHz).
6. If it is not within the standard range, adjust VR303 Fig. 8
(L-CH) and VR302 (R-CH) so that the frequency level is
within the standard range. CrO, Metal Overall frequency response chart (NR OUT)
¢ Level up in high frequency range Increase the bias current.
¢ Level down in high frequency range ...Decrease the bias current.
7. Repeat steps 2~6 above using the CrO, tape (QZZCRX)
and the Metal tape (QZZCRZ) increasing the frequency
range to 12.5kHz (50Hz~ 12.5 kHz).
8. Assure that the level is within the range shown in Fig. 9.
+6dB
+4dB
+20B
0dB
—20B
—40B8
—6dB) H
LINE IN LINE OUT
SOHz 100Hz 200Hz SOOHz 1kHz 2kHz
EVM Oscilloscope Fig. 9
OVERALL GAIN ADJUSTMENT (DECK 2)
. Insert the Normal blank test tape (QZZCRA) and set the
unit to the Record pause mode.
- Apply a _ reference input signal (1kHz, -—24dB).
Attenuate the output so that its level becomes 0.4V.
. Record this input signal. LINE IN LINE OUT
. Playback the signal recorded in step 3 above, and assure
that the output is within the standard value.
. If it is not within the standard value, adjust VR7 (L-CH)
and VR8 (R-CH).
. Repeat the step 2~5 above until the output is within the
standard value.
Standard value: 0.4V+0.5dB
EVM Oscitloscooe