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2-3. AUDIO CIRCUIT ADJUSTMENT
Before making these adjustments,
be sure to make the
.
Before making these adjustments
(except the ACE heads
adjustments
described in the tape path adjustment, espe-
adjustments),
be sure to make the adjustments
described
cially the ACE heads adjustments
(refer to the separate
in section 2-1, "Servo Circuit. " and section 2-2. "Video
volume "Mechanism
Manual")
so that the tape traveling
Circuit ."
between the supply side guide roller and loading guide post
runs without fluttering or curling.
2-3-1.
TEST EQUIPMENT
AND STANDARDS
REQUIRED
Oscilloscope
Vertical sensitivity
:10 mV/DIV
Bandwidth
: more than 30 MHz
AC Voltmeter
Effective value indication
Input frequency
: 10 Hz-20kHz
Input impedance
: more than 1 MQ
Measurement
level
: 1 mV (full scale)
Frequency Counter
Input frequency
:20 HZ- IO MHZ
L-
Blank Tape
VHS-type cassette tape
2-3-2.
LOCATION
OF ADJUSTMENT
POINTS
L
P54400D
r
J:._.....
........
...'
TM-71
TM-8
PWB
Power
'sS;ply
7
----
,,
0
VR234
H
,....
,-...,
CN352
1:
,......
1
0
CN351
37
13
Iclol
25
w
R3032
CN303;"">
J3054
2
"''0:01
"'"'"a
~
51
A
CP-1 PWB (Foil side)
Fig. 2-3-1
–13–
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