Sony TC-K222ESG - Page 13

Normal Bias Adjustment
Setting:
REC LEVEL knob: standard record position
(See page 10.)
Procedure:
1. Mode: simultaneous REC/PB
LINE IN
10 kHz, 25 mV (-—30 dB)
AF OSC 315 Hz, 25mV (-30 dB}
no-signal tape
6) eke CS- 122
0
o—o
o—o
LINE OUT
2. Adjust RV152 (L-CH) and RV252 (R-CH) so that
the output level of 10kHz is 0.2dB to 0.8dB with
respect to that of 315Hz.
HX PRO Operation Check
Note: This check should be done after Normal Bias
Adjustment in the same connection.
Procedure :
1. Mode: simultaneous REC/PB
2. Record and playback 10kHz 0.25V (-10dB) signal
in both modes of HX PRO ON and OFF.
3. Confirm that the playback output level when ON
is 1dB or more with respect to that when OFF.
| TC-K222ESG/K850ES
Metal Bias Adjustment
Setting :
REC LEVEL Knob: standard record position
(See page 10.)
Procedure :
1. Mode: simultaneous REC/PB
31SHz, 2SmVv( —3008)
AF OSC 10kHz, 25mV( —30¢B)
no- signal tape
CS- 413
10kQ) LINE INPUT
LINE OUTPUT
2. Adjust RV574 so that the playback output level
of 10kHz in R-CH is 0.2dB to 0.8dB with respect
to that of 315Hz.
Calibration Meter Adjustment
Setting : CALIBRATION switch: ON
Procedure :
1. Mode: stop
VTVM
no-signal tape
CS- 122
8kHz
2. Adjust RV572 for 400Hz and RV571 for 8kHz to
obtain oscillation level within 10 +0.5dBs
respectively.
3. Put the set in record mode and adjust RV131
(HIGH) so that HIGH FREQ segments in the CAL
LEVEL meter light thoroughly up to 0 VU as
shown in the figure below. Segment (a) may
flicker.
4, Preset RV231 (LOW) so that segment (a) in LOW
FREQ CAL LEVEL meter lights. Then adjust
RV231 to the point where segment (a) goes out.
HIGH : LEVEL (a) may flicker.
+41GH t
REC CAL FREQ | am em oe we oe oe ee om on
LOW we one oom can con oon Om owe ome oD ee
FREO 4
REC EO CAL NORM
(a)
LOW: LEVEL (a) must not flicker.
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