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XR-P740M,
XR-P64()M,
XR-P34()M
xIl.-P7
40, XR-P64(), XR-P340
Out
of adiustment
Optimum adiustment
Out ol adiustment
W
Out of
adiustment
I
tl
.t l,
I
Optimum
adiustment
Fig. 3 Eye Pattern
,//A r,
u// vI
Mil\
Out of
adjustment
I
RF Level Verification
o
Objective
o
Symptom when out
of adjustment
To verify
the
playback
No
play
or
no
search
RF signal amplitude.
Measurement
Instrument
Connections
Connect the oscilloscope to
TPl, Pinl
(RF).
ISettings]
50mV
division
10ms/division
AC mode
o
Player State
o
Adjustment Location
o
Disc
Test
mode,
play
None
YEDS-7
lProcedurel
1.
Move the
pickup
to midway across the disc
(R:35mm)
with the MANUAL/TRACK SEARCH FWD
>>
.
>>!
key
or
REV
!<<
close the respective servos
and
put
the
player
into
play
mode.
2.Yerify the RF signal
amplitude is 1.2Vp-p+0.2V.
1-35