Teac CX-270 - Playback Performance Checks

CX-270/CX-210
5-4 PLAYBACK PERFORMANCE
SIGNAL ADJUST
CONNECTION SOURCE (or CHECK) OUTPUT REMARKS
Phase: within 45° on
1, REC/PLAY head Yee ot ee ee Ne a, 12 sl Ree ORE NE Brean ||
: : : i
azimuth
MTT-316
tape,
Azimuth
adj.
|
tax,
output
on
AC
}
MTT-150 tape Check
f
10kHz section oso” voltmeter
Connect AC volt-
: meter between
2. Specified out- DOLBY TP L (R)
put level and TP E MTT-150 tape
R11/R21 580 mV (—2.5 dB)
—5dB+2qdB e Specified level
(346 mV to 548 mV)
e Set PEAK HOLD to | ;
CANCEL for CX-270 |
t
3. VU meter +3 VUonVUmeter.....
(Peak level meter) MTT-150 tape R13/R23 or
O dB on peak fevel
rae ey Pieter weeue: eate tay i
Reference 315Hz:
40Hz: +2,—4dB
4.
Frequency
MTT-316
tape,
63Hz:
+2,-2dB
©
If
10kHz
output
is
low,
:
response
40Hz
to
10kHz
2kHz:
+2,—2dB
adjust
by
cutting
jumper
.
section 4kHz: +4,—2dB W2 and/or W2. (Fig. 5-8).
6.3kHz: +4, -—2 dB
10kHz: +4,—5dB
© Set EQ sw. to NORMAL.
MTT-501 tape 47 dB (min.) ratio © Ratio of spec. —5 dB and
noise.
5. Signa! to noise
ratio
6. Headphone : -—18 dB +2dB @ At PHONES jack.
ae om is a = (77.5 my tO ize mv)
OSCILLOSCOPE
° ° °
O° (IN PHASE) 45
90 180
DECK OH) ce O <
under TEST
T- 1493
Fig. 5-6 Confirming phase relationship
T-813
Fig. 5-4 Connection
AC Voltmeter
REC/PLAY HEAD
DECK under TEST
: PHONES
Fixed
Azimuth
adjusting nut TAIODO
T-401«
Fig.5-5 Head azimuth adj. location Fig. 5-7 Connection