Sony TC-V3 - Electrical Adjustments; Headphones | Line out

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)
nch)
Level
difference
between
channels:
m
less
than
0.5
dB
ch)
*
Switches
and
controls
should
be
set
as
follows
Specification:
output
Check
that
the
LINE
OUT
level
does not
eee]
unless otherwise specified.
level
_change in playback mode while changing the
DOLBY
NR
switch:
'
OFF
Spend
coaeker
Digital
frequency
counter
mode
from
playback
to
stop
several
times.
DOLBY
B/C switch:
B
sOeetU
OR
__2,975~3,025
Hz
TAPE
switch:
AUTO
(I:
NORM)
~_
SS
R-CH”
TIMER
switch:
OFF
Frequency
difference
between
the
beginning
Screw
Peak
Adjustment
Location:
® 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