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TC-K222ESG/K850ES
MPX
FILTER
Check
Setting:
DOLBY
switch:
OFF
MPX
FILTER
switch:
OFF
Procedure :
1. Mode: stop
AF OSC
C)
attenuator
10 kX
x,
O
LINE OUT
LINE IN
.
315 Hz, 0.25 V (—10 aB)
2. Apply
315 Hz, 0.25 V (—10 dB) signal and adjust
REC LEVEL control so that the LINE OUT level
is 0.44 V (—5 dB).
3.
Set DOLBY
switch to B or C and MPX
FILTER
switch ON.
Confirm
that the LINE OUT
level is
0.39V to 0.49V (-5dB + 1dB).
4.
Apply
19kHz
0.25V (-10dB) signal and confirm
that the LINE OUT level is 0.014V (-35dB) or less.
Adjustment
Limits :
LINE
OUT
level
315Hz
0.39V —0.49V
(-5dB + 1dB)
19kHz
0.014V (-35dB)
Erase Current Adjustment
1.
Mode:
record
frequency
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2.
Adjust RV573
so that the reading on VTVM
is
105mV
(erase current=105mA).
3.
And
then
confirm
that
the
reading
on
the
frequency
counter
is 160kHz.
Adjustment
Limits :
Erase current:
105mA
to 110mA
Frequency:
160 + 6kHz
Bias Current Adjustment
Note:
This
adjustment
should
be made
before
Record
Bias
Adjustment.
Setting : HX PRO
switch:
ON
Procedure :
1.
Preset RV152 (L-CH), RV252 (R-CH) and RV574
in the center position, and record with no signal.
2.
Adjust
T151
(L-CH)
and
T251
(R-CH)
for
minimum
readings
on
the digital voltmeter.
Adjustment
Limits :
120mV
or less.
digital
voltmeter
B+ (8.5V)
Record
Bias and Record
Level Adjustment
Setting:
REC LEVEL knob:
standard record position
(See page
10.)
HX PRO
switch:
ON
Procedure:
1. Mode: simultaneous REC/PB
LINE IN
315Hz, 25mV (- 30dB)
:
AF
OSC
10kHz,
25mV
(-30dB)
no-signal tape
*)
10k2
CS-122
.
Oo
oO
LINE
OUT
2.
Adjust RV153 (L-CH) and RV253 (R-CH) so that
the
playback
output
level
of 10kHz
signal
is 0.2dB to 0.8dB with respect to that of 315Hz.
* ¢ «Record Bias Adjustment.
3.
Adjust RV151 (L-CH) and RV251 (R-CH) so that
the playback output level of 315Hz is -25.3dB to
-24.7dB. * * *Record Level Adjustment.
(De.
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