Sony TC-366 - Page 30

tape, blank
AF
Osc REC Amp.
AUX C
1 kHz
-10dB
LINE OUT
Fig. 12-19 Record bias adjustment setup
12-13. Record Level Adjustment
Connection:
As shown in Fig. 12-20.
Adjusting Parts:
R120:(R220).....cccmennrsciee. See Fig. 12-2
Switch Setting:
MONITOR switch .........cceeeeeeeeees TAPE
TAPE SELECT switch ........0... NORMAL
NOISE SUPPRESS switch .......... OFF
TAPE SPEED switch ........... 19 cm/s (7% ips)
VR Setting:
AUX VOLUME ............. indicated on page 25
Procedures:
(1) Thread a blank tape.
(2) Deliver a 1 kHz signal of -10dB (0.24V)
into the AUX INput jack and record the
signal on the blank tape.
(3) Adjust R120 (R220) to obtain 0dB on the
VTVM.
(4) Be sure that the VITVM reading is O0dB
(0.775V) when changing the MONITOR
switch to SOURCE and the pointer of the
level meter just stays at the boundary
between the red portion and the black
portion when changing the MONITOR
switch to TAPE.
(5) When changing the TAPE SELECT switch
to SLH with the MONITOR switch set in
SOURCE, be sure that the reading on the
VTVM decreases approximately 1.5 dB.
Osc
REC
Amp.
tape,
blank
AUX
1 kHz
-10 dB
LINE OUT
Fig.
12-20
Record
level
adjustment
setup
12-14. Record Equalizer Adjustment
Connection:
As shown in Fig. 12-21.
Adjusting Parts:
ICA Bo SEG Ie 6 RE ate PER ee See Fig. 12-2
Switch Setting:
MONITOR switch ow... TAPE
TAPE SPEED switch ......0..0.000. 19 cm/s (7% ips)
VR Setting:
AUX VOLUME............. indicated on page 25
Procedures:
(1) Be sure that the p.b. equalizer adjustment,
the trap coil adjustment and the record
bias adjustment have been made.
(2) Thread a blank tape.
(3) Deliver a 1 kHz signal of -40 dB (7.75 mV)
into the AUX INput jack and memorize
the reading on the VTVM, while recording
the signal on the blank tape.
(4) Change the signal from 1kHz to 20kHz.
(5) Adjust L101 (L201) to obtain the same
reading obtained in preceding procedure (3)
on the VTVM.
(6) When changing the signal continuously from
20 kHz to 10 kHz be sure that the deviation
on the VTVM is within +3 dB.
If the deviation is more than +3 dB in level,
make the tape pass and the record head
azimuth adjustments.
AF
OSC REC Amp. tape, blank
AUX :
1, 20kHz
-40dB
LINE OUT
Fig. 12-21 Record equalizer adjustment setup
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