Sony PHC-Z10 Service Manual page 12

REC/PB Head Azimuth Adjustment DECK A
Procedure:
1. Mode: playback
test tape
P-4-A063
(6.3 kHz, –10 dB)
set
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 1 dB.
L-CH
peak
Output
level
R-CH
screw
peak
position
3. Phase Check
Mode: playback
test tape
P-4-A063
(6.3 kHz, –10 dB)
L-CH
set
R-CH
in phase 45˚
good
Note: Finish the screw adjustment with a turn in the clockwise
direction.
After the adjustment, lock the adjustment screw.
DECK B
level meter
32 Ω
J901 (phones)
within
1 dB
L-CH R-CH
peak peak
osilloscope
L-CH
32 Ω
V H
32 Ω
R-CH
J901 (phones)
Screen pattern
90˚ 135˚ 180˚
wrong
Adjustment Location: playback head (deck A)
within
1 dB
angle
— 12 —
record/playback head (deck B)
adjustment screw