— 16 —
Record/Playback Head Azimuth Adjustment
Procedure:
1.
Mode : Playback
2.
Turn the adjustment screw for the maximum output levels. If
these levels do not match, turn the adjustment screw until both
of output levels match together within 2dB.
32k
Ω
test tape
P-4-A063
(6.3kHz, –10dB)
set
+
–
level meter
J302 (phones)
V
H
oscilloscope
J302 (phones)
test tape
P-4-A063
(6.3kHz, –10dB)
set
L-CH
L-CH
32
Ω
32
Ω
R-CH
R-CH
screen pattern
in phase
45
°
90
°
135
°
180
°
good
wrong
3.
Phase Check
Mode : Playback
Note:
Adjustment must be completed by cw turning of adjustment
screw.
After the adjustment, lock the screws with locking
compound.
Adjustment Location : Record/Playback head
screw position
L-CH
peak
R-CH
peak
R-CH
peak
L-CH
peak
Screw
position
output
level
within
2dB
within
2dB
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TEL 13942296513 QQ 376315150 892498299