Table of Contents
Advertisement
Bias
Current
Adjustment
Procedure :
LINE
IN
(no signal)
CS-413
blank
tape
digital
voltmeter
47k
L-CH
oO x
Ana
ces
|
TP301
B+ (+7.5V)
1.
Set RV103
and RV203
to mechanical
center and turn the set
recording
mode.
2.
Connect
digital voltmeter
as shown
by the following
table.
38.
Adjust
the following transformers
for the minimum
readings
on the digital voltmeter.
Adjustment Part
@ and @, TP301
T101
not more
than
.® and ©, TP301
T201
130mV
Adjustment
Location:
Main
board
Record
Bias Adjustment
Setting :
REC
LEVEL
control:
Standard
Record (See page 7.)
test
pin
TP801:
short
Procedure :
1,
Mode:
record
2.
Mode:
playback
recorded
portion
po
Playback
the signal recorded
in step
1.
Confirm
that the 10kHz
playback
output
is 0+0.5dB
relative to
the 315Hz output.
If necessary, adjust RV103
(L-ch) and RV203
(R-ch) for repeat
the steps given above.
VTVM
LINE OUT
Adjustment
Location:
Main
board
Record
Level
Adjustment
Setting:
REC
LEVEL
control:
Standard
Record (See page 7.)
test
pin
TP801:
short
Procedure :
1,
Mode:
record
AF OSC
€)
attenuator
(oe)
VTVM
LINE OUT
LINE IN
315Hz, 32.2mV(— 27.7dBs(m))
2.
Mode:
playback
recorded
portion
LINE OUT
3. Playback
the signal recorded
in stepl.
Confirm
that the signal level is within the adjustment
limits
below.
If necessary, adjust RV102
(L-ch) and RV202
(R-ch)
repeat
the stepl-2.
Adjustment
Limits:
—27.7dBs(m)
+ 0.5dB(80.4~34.2mV)
Adjustment
Location:
Main
board
Quick Reverse Sensitivity Adjustment
Conditions :
DIRECTION
MODE
switch : y=
digital
voltmeter
Adjustment
procedure:
Quick
reverse
adjustment
tape
(Leader
of the
'
nee
black
cassette
tape)
TP802
Connect
the digital voltmeter
to test point TP802.
2.
Load quick reverse adjustment tape and play back the leading
portion
in FWD
mode.
3.
Adjust
the RV801
for 4.5+0.5V
reading
on
the
digital
voltmeter.
Play back quick reverse adjustment
tape in FWD
mode again.
Confirm that the reading on the digital voltmeter is "L" level
at the magnetic
portion
of the tape.
6.
Confirm
that
the tape stop around
the tape end (boder
of
the leading
and the magnetic
portions).
Adjustment
Location:
Main board
220i:
Advertisement
Table of Contents
