Hz
FREQUENCY COUNTER
TP
GND
1.TAPE SPEED ADJUSTMENT
Requirements
Measuring equipments :
W
ow
&
flutter meter (frequency counter )
Test Tape: TTA-100 (3
k
Hz)
Test point: C651(Lch),C652(Rch),GND
Adjustment point : Tape speed adjustment point (motor)
1) Connect Test point to the Wow
&
flutter meter.
2) Insert the test tape (TTA-100), play back center of the tape
and adjust the motor
adjustment point
until it becomes 3,000Hz +3 / -2%.
2.WOW
&
FLUTTER CHECK
Requirements
Test tape: TTA-100 (3
k
Hz)
Test point: C651(Lch),C652(Rch),GND
1) Connect the Test point to the Wow
&
flutter meter.
2) Set the indicator to JIS and the mode to W RMS (WTD)
of the Wow
&
fl
u
tter meter.
3) Play back the center of the test tape (TTA-100) and check
that it is below 0.25%.
3.HEAD AZIMUTH ADJUSTMENT
Requirements
Measuring equipment: Oscilloscope
Test Tape: TTA-330 (8
k
Hz)
Test point: C651(Lch),C652(Rch),GND
Adjustment point: Head azimuth screw
1) Connect the Test point to the oscilloscope of CH1 and CH2.
2) Set the V mode of the oscilloscope to ADD.
3) Insert the test tape (TTA-330) , play back the center of the tape and adjust
the head azimuth screw until the waveform of the oscilloscope has reached
the maximum when playing back at 10
k
Hz.
4) After the adjustment, bond lock (1600B) the screw.
4.REC. BIAS FREQUENCY ADJUSTMENT
Requirement
Measuring equipment:
F
requency counter
Test point: JW38, GND
Adjustment point: L451
1) Connect the JW38 to the frequency counter.
2) Set the recording condition to the main unit.
3) Adjust the L451 until it becomes 85
k
Hz+/-0.5
k
Hz.
OUTPUT
OSCILLOSCOPE
Lch
Rch
CH1
CH2
Hz
WOW&FLUTTER METER
TP
%
INPUT
Hz
WOW&FLUTTER METER
TP
%
INPUT
–
51
–
d u
p a
t o
r
Содержание XR-EM52
Страница 31: ... 31 SCHEMATIC DIAGRAM 4 TUNER d u p a t o r ...
Страница 38: ... 38 IC BLOCK DIAGRAM d u p a t o r ...
Страница 39: ... 39 d u p a t o r ...
Страница 40: ... 40 FL 11 BT 193GNK GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION d u p a t o r ...
Страница 46: ... 46 VOLTAGE CHART d u p a t o r ...
Страница 47: ... 47 d u p a t o r ...
Страница 48: ... 48 d u p a t o r ...
Страница 65: ... 65 CD MECHANISM EXPLODED VIEW 2 2 3ZG 2 A 3 6 2 5 1 9 10 4 7 8 d u p a t o r ...
Страница 73: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 8710 JAPAN TEL 03 3827 3111 9301944 9430209 921338 d u p a t o r ...