Sony CFD-W57 - Cd Radio Cassette-corder, Service Manual

Page: 16 / 74

– 16 –
R-CH
peak
R-CH
peak L-CH
peak
L-CH
peak
screw
position
Output
level
within
3 dB
within
3 dB
angle
REC/PB Head Azimuth Adjustment DECK A DECK B
Procedure:
1. Mode: playback
3. Phase Check
Mode: playback
Note:
Finish the screw adjustment with a turn in the clockwise
direction.
After the adjustment, lock the adjustment screw.
Adjustment Location: playback head (deck A)
record/playback head (deck B)
2
jack
set
32 Ω
test tape
P-4-A063
(6.3 kHz, –10 dB)
level meter
2
jack
set
L-CH
32
Ω
32 Ω
R-CH
test tape
P-4-A063
(6.3 kHz, –10 dB)
osilloscope
R-CH
L-CH
V H
Screen pattern
in phase 45˚ 90˚ 135˚ 180˚
good wrong
adjustment
screw
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 3 dB.