Teac CX-270 - Monitor Performance Checks; Recording Performance Checks

CX-270/CX-210
5-5 MONITOR PERFORMANCE (In the record-pause mode)
1. Min. input
level
CONNECTION
Fig. 5-3, but
LINE IN>MIC
. Specified
RECORD
cont. setting
SIGNAL
SOURCE
ADJUST
{or CHECK) autre
Test tone, 400Hz/
—19 dB + 2 dB (69
mV to 109 mV}
Test tone, 400Hz/
—67 dB +3 dB (245
BV to 489 nV)
RECORD
cont. to Max.
and Check
—5 dB (436 mV)
REMARKS
© For LINE IN check
© For MIC check.
© Set INPUT sw. to MIC
(or MIC/DIN)
NOTE: To prevent mis-meas-
urements, any connection
cords except those for each
input check must be re-
moved.
Connect OSC>ATT
to LINE IN, and
AC voltmeter be--
tween DOLBY TP
L(R) and TPE
3. VU meter
(Peak level meter)
Test tone, 400H2/
—9 dB (275 mV)
RECORD
580 mV (—2.5 dB)
cont.
—5dB+1dB
(388 mV to 489 mV)
5-6 RECORDING PERFORMANCE
ITEM CONNECTION
1. Bias trap
2. Record bias
3. Record level
Test tone, 400Hz/
—9 dB
“| IMPORTANT: After this, do
not move RECORD cont.
for all later process.
+3 VU+1VU on VU
O dB + 1 dB on peak
level meter
e@ Set PEAK HOLD to
CANCEL for CX-270
4. Distortion
. Frequency
response
SIGNAL ADJUST
SOURCE (or CHECK) ONT REMARKS
Connect AC voltme- }
ter between BIAS A ‘ , F
TRAP TP L(R) No signal L102/L202 Min. reading e Set in REC-PAUSE mode.
and TP E
: Test tone, 400Hz Th e level at
Fig. 5-3 and 6.3kHz in C136/C236 | pepe eee
turn/—42 dB ot requencies
R12/R22....—-8dB(308mvV)....... Co (CrO,)
Fig. 5-3 Test tone, 400Hz/ | —8 dB + 1.5 dB
—12dB (195 mv) | Check. ----- (259 mV to 367 mV)" **** periuaions
mt Test tone, 400Hz/ 22%orless.....0..0- Co (CrO.)
Eigc BS —12 dB (195 mv) | Check 2.0% or less... 1... eee NORMAL
Reference 400Hz:
40Hz: +4,—4dB
63Hz: +4,-4dB
Test tone required 125Hz: +4,-—2dB
Fig. 5-3 w/spec./—42 dB Check 250Hz: +2,—-2dB
(6.15 mV) 6.3kHz: +2, —2dB
8kHz: +3,—-3 dB
10kHz: +3,-4dB..... NORMAL
12.5kHz: +3,-4dB..... Co (CrO,)