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WQ-272H(R)
I. Turnthedrumfully inthedirection Oshown inFig.10—2
and stretch
its cord over the parts in the numerical order.
2. Thenturnthe tuning control s haftfully inthedirection@
shown in Fig. 10—2and fix its pointer asshown in Fig. 10—1.
Dial Cord Assembly
SETTING
0 Volume
POSITION
0 Tone
OF
SWITCH
o Function
AND
KNOB
Beat
cancel
INPUT
ITEM
BIAS
OSCI-
LLATION
FREQUENCY
ERASE
CURRENT
PLAYBACK
Test tape
AMPLIFIER
MTT-118
SENSITIVITY
STRINGING
485
mm
(203)
"O" point
O.smm
Figure 10—1
CIRCUIT
ADJUSTMENT
control:
Maximum
control:
Maximum
selector switch:
Tape
switch:
A
ADJUST-
MENT
REMARKS
POINT
(A = 100±
(B = 103±3kHz)
(C = 94±3kHz)
(Normal:
45 ± 5 mV)
(1.3V±3dB)
OF DIAL
Pulley
(243)
C? fr
(AUDIO
E.v:
ELECTRONIC
Record
Mode
Unit
(CHECK)
3 kHz)
Figure 10—
Record
Mode
un it
Test Tape
MTT-118
Figure 10-5
CORD
Dial
Pinter
(214)
Pulley
(243)
Drum
(234)
Figure 10—2
SECTION)
VOLTMETER
Record/Playback
Oscilloscope
Head
E.V.
100 ohm
GND
3 BIAS OSCILLATION
Erase
Head
I ohm
GND
Figure 10—4 ERASE CURRENT
Playback CNP501
Mode
Unit
GND
Record/Playback
2.4
Head
PLAYBACK
AMPLIFIER
5 Turns
Tuning
Control
Shaft
(236)
F requency
Counter
FREQUENCY
Oscilloscope
Oscilloscope
E.V.
ohms
SENSITIVITY
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