Marantz SD4050 /N1B Service Manual page 7

4-2-3 Playback performance
Deck settings :
Mode : PLAY
DOLBY NR Switch : OFF
ITEM SETTING
Connection:Fig. 2-4
1. Head
Check and adjust in
azimuth
FWD, REV
adjustment
respectively
2. DOLBY level
Connection:Fig. 2-2
FWD, PLAY
3. Playback
Connection:Fig. 2-3
output level
FWD/REV PLAY
4. Meter level
5.PHONES
output level
PHONES
6. Playback
frequency
response
Connection:Fig. 2-3
7. Playback
S/N ratio
Connection:Fig. 2-3
TEAC test tapes :
MTT-150C : For Dolby lavel calibration
MTT-25702 : For playback frequency response check NORMAL tape
MTT-5513 : For S/N check NORMAL tape
ADJUSTMENTS
INPUT SIGNAL
MTT-150C Check
Azimuth screws
MTT-25702
(12.5kHz)
R11/R21
MTT-150C
R12/R22
MTT-150C Check
Check
MTT-150C
MTT-150C
Check
MTT-25702 Check
MTT-5513
Playback the
leader tape portion
Check
7
MEASURING
POINTS, RESULT
LINE OUT:
Phase: within 45
(Fig. 2-5)
LINE OUT:
FWD azimuth
Maximum output
level at L & R -ch
PLAYBACK
TP1/TP2:
-6dB
REC/PLAY
LINE OUT:
Ref. output level
-4.5 1dB
LEVEL METER:
mark 1dot
8
PHONES:
-19 3dB
250
1k
Ratio of ref.
level to noise
46dB min.
REMARKS
REV azimuth
load
+4dB
-4dB
12.5k (Hz)