Sony TC-K555ES - ELECTRICAL ADJUSTMENTS - RECORD HEAD ALIGNMENT; Record Head Azimuth Adjustment; Record Head Phase Check

TC-K555ES
TC-K
Record Head Azimuth Adjustment (Record head azimuth adjustment
should be made later than playback head azi muth adjustment.)
Setting:
MONITOR: TAPE
REC
LEVEL control: standard record (See page 23)
TAPE: TYPE I
Procedure: Adjustment Location:
record and playback mode
AF OSC.
VTVM
O
blank rope II I II
o attenuator 600n CS-15 47kn I
i I
~OOO I
-----~. ,
/
LINE IN LINE OUT
10kHz, 25mV (-30 dB)
1. 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 0.5 dB.
adjustment screw
-- angle
R-CH
peak
L-CH
peak
---=:------'-- with in
---F---------.---f-----.---t-------"~r_ 0.5 dB
within -J.~-=
output 0.5 dB
level 1
Screw
position
2. Phase Check
L-CH
peak
osilloscope
AF OSC.
L-CH
47kn
D
LINE IN
LINE OUT
Screen pattern
0@@(§)(S)
. h 4~ 90
0
13~ 180
0
\,."n-
p
ase y ) ~
good wrong
Adjust the screw so that L-CH and R-CH are in
phase.
Specification:
Phase difference between L-CH and R-CH:
less
than 90°
Level difference
between L-CH and R-CH:
less
than 1 dB
-25-