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3-2.
ELECTRICAL ADJUSTMENTS
Note:
The adjustment
should be performed in
the order given in this service manual.
The
adjustments
should
be performed
for both L-CH and R-CH.
@ Set the TAPE
switches according to the tape as
follows.
Capstan Motor Speed Adjustment
Procedure:
Mode:
playback
speed checker
LFM-30
or
digital frequency
test tape
counter
WS-48
(3 kHz, 0 dB)
Record/playback
Head
Azimuth
Adjustment
Procedure:
1.
Mode:
playback
test tape
P-4-A063
(6.3kHz, —10dB)
LINE OUT
Playback
Level Adjustment
Procedure:
Mode:
playback
test tape
P-4-L300
(315Hz, 0dB)
vIUM
bE
LINE OUT
me
TSEE ne
Swite)
acre
Turn
the adjustment
screw for the maximum
—
rey
ares
7 ners
output levels. If these levels do not. match, turn
CS rs
Fe-Cr (METAL)
fic Fe a
| (oe
the
adjustment
screw
until both
of output
Specification:
i
:
levels match together within 0.5 dB.
neh)
CS-40
*
AUTO
IV: METAL
LINE OUT
LINE
OUT
level:
0.46 ~
0.41V
Fe-Cr (METAL)
:
(—4.5 ~ —5.5dB)
eee]
unless otherwise specified.
level
_change
in playback
mode
while changing the
® Standard Record:
Deliver
the
standard
input
signal
level
to the
input jack and set the REC LEVEL
control to
obtain the standard
output
signal level.
Standard Input Level
———
enn
source impedance
3002
10k2
0.77mV (—60dB)
|0.25V (-10dB) |
input level
Standard Output Level
| HEADPHONES | LINE OUT
yw
load impedance
82
47kQ
| _ outputilevel
3lmV (-26dB)
|0.435V (—5dB)
and the end of the tape should be within 0.8%
(25Hz).
Adjustment Location:
Adjust
the
speed
by
using
screwdriver.
When
turning the screw clockwise, speed is faster.
position
3.
Phase Check
Mode: _ playback
test tape
P-4-A063
oscilloscope
(6.3kHz; —10dB)
L-CH
in phase
45°
good
~- AUDIO board —
RV102
RV202
i=
|
. —=12—
ST
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