Teac A-550RX - Playback Performance

A-SSORX
5-3 PLAYBACK PERFORMANCE |
Deck settings:
EQ sw. — METAL
NR SYSTEM sw. — OUT
TEAC test tapes:
MTT-150:
MTT-316:
MTT-216:
For Dolby level calibration
For playback frequency
response check for METAL, Co (CrO2).
For playback frequency
response check for NORMAL
DECK
under TEST
Fig. 5-3
Azimuth
MODE/ SIGNAL ADJUST
CEM CONNECTION INSTRUCTION SOURCE (or CHECK) ReTEnT. BENAGES
OUTPUT cont. — conve- Phase: within 45°
1.
REC/PLAY
Fig.
5-3
nient
level
position
MTT-150
Check
on‘scope(Fig.5—5)
: PAV [Lucene eceeeeteses [io strre cliente eg aes Tok slink AN eh IR en ae EIN ee Soe eee Rt eer nE [th hg 8 Ate a
head azirauth MTT-316(12.5) Azimuth adj. nut | Max. output on
“ ” kHz/—20dB) of head (Fig. 5-4) | VTVM
VTVM between
TP1/TP2 (on R/P
AMPL. PCB) and NR SYSTEM — OO MTT-150 R12/R22 580 mV (—2.5dB)
GND
VTVM between
TPIL/TPIR {on
DBX
PCB)
and
NR
SYSTEM
—
OUT
'
VR101/VR201
;
GND
fe et eet Arse eres ae ts et NE ia an rahe Ea do Ne 2 een rental a ee at ase nie es PI ae hee
i
—2.5
dB
t2
dB
(461
Max.
output
Fig, 5-2 OUTPUT cont. — Max. Check mV ~ 731 mV) level
2: <Outputleval’ [fe ee ee et Ee a eS
@ Spec. output
level
@ Set OUTPUT cont. for © seen Pe con:
° —5dB output of ch. ” OUTPUT cont. —5 dB (436 mV) IMPORTANT:
with lower reading After finishing,
do not move
OUTPUT cont.
during any later
PR SS SRS or re RS ee Se SS Sere Sees ee nn pen een nn ee nnn men en ee nan ------4 process.
‘ @ Adjust for ch. with oe i
higher reading R13 or R23
3.
Peak
level
.
'
ion Fig. 5-2 Spec. PB cond. MTT3150 R15/R25 Ce ee
—-—+- ——__-— st
EQ-METAL
@ Adjust for '
i 40Hz ~ 6.3kHz +2 dB ‘
Fig. 5-2 ADEE tO. RE T-GI6 R11/R21 10kHz +2, —3 aB| Reference:
Spec be the same | 14kHz +2, —4 dB 315 Hz
4. Frequency PB tevel as ref. :
response cond. signal
EQ ” 10 kHz output should
" NORMAL (10 kH2/ Check | raise about 5 dB than
—20 dB) above actual one
Spec. PB cond. Ratio of spec.
Bs: Stanal te: Fig. 5-2 Ee NOR Or MTT-501 Check 48 dB min. ratio output —5 dB
noise ratio @ Use fully erased tape t6-noisé
(Use bulk tape eraser)
i
@ At phone
6. Headphone : 2 —15 dB +2 dB (109 tack
output
level
Rig:
8-6
Spree
Fe
cond:
eee
ens
mV
~
173
mV)
e
80
load
REC/PLAY HEAD
OSCILLOSCOPE
Fixed
adjusting nut
Fig. 5-4