Sony TC-366 - Page 27

Procedures:
(1) Playback the 2nd tone (400Hz, -0 dB) of
SONY alignment tape J-19-Fi or J-19-K1.
(2) Adjust R171(R271) to obtain 0dB(0.775V)
on the VTVM.
(3) Adjust R172 (R272) so that the pointer of
the level meter just stays at the boundary
between the red portion and the black
portion.
(4) Change the TAPE SELECT switch to SLH.
(5) Be sure that the VITVM reading is -2~-3 dB
(0.61 ~0.55V).
tape, alignment VTVM
P.B. Amp. LINE OUT
Fig. 12-11 P.B. output level adjustment and level
meter calibration setup
12-7. P.B. Equalizer Adjustment
Connection:
As shown in Fig. 12-12.
Adjusting Parts:
R145(R245)—19cm/s tape speed ...... See Fig. 12-2
R146(R246)—9.5cm/s tape speed ..... See Fig. 12-2
Switch Setting:
MONITOR switch ............. TAPE
TAPE SPEED switch ........ 19 cm/s (7% ips)
Procedures:
CAUTION
Never fail to make the 19cm/s equalizer
adjustment first.
A) In using the SONY alignment tape J-19-K1
(1) Playback the Ist tone (10 kHz, -10dB) of
the tape and memorize the reading on the
VTVM.
(2) Playback the 2nd tone (400 Hz, 0 dB) of the
tape and adjust R145 (R245) so that the
reading on the VTVM is 10dB higher than
the reading obtained in the preceding proce-
dure (1).
3p
(3) Change the TAPE SPEED switch from
19cm/s to 9.5cm/s (from 714 ips to 334 ips).
(4) Playback the ist tone of the tape and
memorize the reading on the VTVM.
(5) Playback the 2nd tone of the tape and
' adjust R146 (R246) so that the reading on
“the VTVM is 10dB higher than the reading
obtained in the preceding procedure (4).
B) an using the SONY alignment tape J-19-Fi
(1) Playback the 3rd tone (400 Hz, -10dB) of
the tape and memorize the reading on the
VTVM.
(2) Playback the 4th tone (10kHz, -10dB) of
the tape and adjust R145 (R245) so that
the reading on the VIVM is the same as
the reading obtained in the preceding
procedure (1).
(3) Change the TAPE SPEED switch from
19cm/sto9.5cm/s (fram 714 ips to 334
ips).
(4) Playback the 3rd tone of the tape and
memorize the reading on the VTVM.
(5) Playback the 4th tone of the tape and adjust
R146 (R246) so that the reading on the
VTVM is the same as the reading obtained
in preceding procedure (4).
After the adjustment, perform the p.b. output level
adjustment and the level meter calibration.
tape, alignment VTVM
Fig. 12-12 P.B. equalizer adjustment setup
4th tone | 5th tone 6th tone i 7th tone
7kHz 80 Hz 40 Hz
2+2dB 4+2dB
(L-CH) (L-CH)
19 cm/s
0 +24B |
(TAips)
25+24B
|
4.5+2¢B
(RCH) | (R-CH)
SONY
alignment
tape
“J-19-F
1”