– 9 –
SECTION 5
ELECTRICAL ADJUSTMENTS
Tape Speed Adjustment
Setting:
Procedure:
– Normal –
1. Set the
[REC TIME]
switch (S601) to
[NORMAL]
position.
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV601 so that the frequency counter reading becomes
3,000 Hz.
Specified Value: 2,970 to 3,030 Hz
4. Check that deflection of the frequency counter reading between
the beginning and the end of tape is within 1.5% (approx. 45
Hz).
– Double (1/2 SPEED) –
1. Set the
[REC TIME]
switch (S601) to
[DOUBLE]
position.
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV602 so that the frequency counter reading becomes
1,500 Hz.
Specified Value: 1,485 to 1,515 Hz
Adjustment Location:
PRECAUTION
1. Specified voltage
: 2.5 V (DC)
2. Setting
SPEED CONTROL dial
: center click
0 dB=0.775 V
Test Tape
Record/Playback Head Azimuth Adjustment
Setting:
Mode: playback (normal speed)
Procedure:
1. Turn the adjustment screw to obtain the maximum reading on
level meter.
Note:
Several peaks may appear, but take the maximum.
2. After the adjustment, lock the adjustment screw with suitable
locking compound.
Adjustment Location:
Type
Signal
Used for
P-4-A063
6.3 kHz, –10 dB
Head Azimuth Adjustment
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
US: 32
Ω
Except US: 16
Ω
set
i
jack (J301)
+
–
adjustment screw
Press the
N
button.
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
set
i
jack (J301)
–
+
US: 32
Ω
Except US: 16
Ω
RV602
Tape Speed Adjustment
(Double)
J301
RV601
Tape Speed Adjustment
(Normal)
J302
– MAIN BOARD (Conductor Side) –
