Teac W-760R - Playback Performance Checks

W-760R |
2-2-3 Playback performance B44
TEAC test tapes:
MTT-150C : For Dolby level calibration
MTT-25702: For playback frequency response check NORMAL tape
Deck settings:
Mode
: PLAY
DOLBY NR Switch : OFF
. Head azimuth
adjustment
FUT ARE
Connection : Fig. 2-5
Check “adjust in FWD,
REV respectively
FWD, REVEnZn
Hi . 27)
MTT-5512
MTT- 150C
MTT-25702
(12.5kHz)
: For S/N check NORMAL tape
Azimuth screws
FUT AREAL
OUTPUT :
Phase : within 45°
{7 #8: 45° LW
(Fig. 2-6)
OUTPUT :
Maximum output level
at L & R-ch
Leh, Roch & SHARA
FWD azimuth
REV azimuth
. DOLBY level
RIDE bAly
Playback
output level
BEAL AIL
. Meter level
A-F-VAIP
. PHONES
output level
PHONES
HAVAIL
. Playback
frequency
response
BER Ree
Connection : Fig. 2-7
FWD PLAY
Connection : Fig. 2-4
FWD/REV PLAY
Connection : Fig. 2-8
Connection : Fig. 2-4
MTT- 150C
MTT- 150C
MTT- 1500
MTT- 150C
MTT-25702
R1I1/R21
R12/R22
TP ;C118O,/C2180 :
-6dB (388mV)
OUTPUT :
- 454 1dB
(411mV~518mvV)
PEAK LEVEL METER:
Cl mark + 1dot
PHONES :
-19+3dB_
(61.6mV~ 123mV)
Ref. output level
AEWA L AIL
8 Q load
8 Q Bis
—4dB
12.5k(Hz)
. Playback S/N
ratio
RES/NEE
Attenuator
Connection : Fig. 2-4
Oscillator
LINE IN
YF
Be
Distorion Analyzer
MTT-5512
Playback the
leader tape portion Check
OUTPUT
FTE
Oscilloscope
Fig. 2-4 Basic test setup
1kHz Filter
AC voltmeter
Ratio of ref.
level to noise
REWALANIVE
J4 KOK