Advertisement
MT400
QQ
3 7 63 1515 0
5. Test equipment required
Low Frequency Oscillator
AC voltmeter (level meter)
DC voltmeter
Oscilloscope
Frequency Counter
Mirror Cassette SONY:
Torque meter SONY:
6. Mechanical adjustment
6-1 Tape running
Check that a tape curl is not created when playing the mirror tape.
When a tape curl occurs, adjust the height of the head after attaching a Y washer.
6-2 Torque check
Check that the torque of each measurement is within the standard listed below by using a torque meter.
Measurement
Mode
FF torque
FF
REW torque
REW
PLAY torque
PLAY
BT torque
PLAY
7. Electrical adjustments
TE
L 13942296513
Adjustments
Test
Tape
1
dBx
--
DC
voltage
Voltmeter
2
Tape speed TCW-211
Frequency
TCC-111
counter
3
Azimuth
TCC-151 AC
and phase
Voltmeter
Oscilloscope
4
Playback
TCC-121
AC
level
Voltmeter
Oscilloscope
TCC-151
5
Bias
--
Frequency
frequency
counter
6
Bias
--
Oscilloscope REC /
oscillation
waveform
7
Recording
Alignment
AC
Bias
tape
Voltmeter
www
Oscilloscope
8
Recording
Alignment
AC
level
tape
Voltmeter
Oscilloscope
.
16
http://www.xiaoyu163.com
MC112C (TX911100)
TW-2231 (TX913450), etc.
Standard
55
120 gcm
55
120 gcm
30
60 gcm
1
6 gcm
Test
Mode
Condition
Equipment
--
--
PLAY 9.5 cm check should
have the priority
PLAY INPUT-FILP: TAPE
FADER-3,4: MAX
PAN-3: L, PAN-4: R
PLAY TAPE SPEED: 9.5 cm TP601-1P
REC /
PAUSE
PAUSE
REC
TAPE SPEED: 9.5 cm
Input frequency: 1 k Hz
Output level: -30 dBm
x
ao
REC
TAPE SPEED: 9.5 cm
y
PLAY
Input frequency: 1 k Hz
Output level: 285 mV
i
Record and play in the
condition above.
http://www.xiaoyu163.com
8
Q Q
3
6 7
1 3
Test
Adjusting
Point
Point
TP101
VR103
TP201
VR203
TP301
VR303
TP401
VR403
MONIT-
VR501(9.5 cm)
OR OUT
VR502(4.8 cm)
MONIT-
Azimuth
OR OUT
adjusting
screw
VR101
TP601-2P
VR201
TP601-3P
VR301
TP601-4P
VR401
TP601-1P
VR102
TP601-2P
VR202
TP601-3P
VR302
TP601-4P
VR402
TP501
L501
TP102
L104
TP202
L204
TP302
L304
TP402
L404
CH1
VR105
CH2
VR205
14 k Hz
CH3
VR305
CH4
VR405
u163
CH1
VR104
CH2
VR204
CH3
VR304
.
CH4
VR404
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
Standard
18.4 +/- 0.2 mV
+ -
3000 +10 / -0 Hz
Output: maximum
Phase: in-phase
285 +/- 10 mV
135 mV (-15 +/- 3 dBm)
80 +/- 1 k Hz
Position the waveform recess at
the center.
+ -
Adjust the output level of 14
kHz to the same level as the
m
output level of 1 k Hz.
co
285 +/- 10 mV
9 9
2 8
9 9
Advertisement
