JVC KD-S730 Service Manual page 37

KD-S730
KD-S630
Check Point
i TS
_—_—_>
prea REST
Check that the voltage at the pin11
of CN502 is OV (a moment)?
Automatic tuning
of TE offset
7 an
Check that the voltage at the
pind of IC5O1 is + 5V?
Detection of disc
Automatic tuning of
Focus offset
Automatic measuraincntat Confirm that the Focus error
Focus A-curve amoltude S-curve signal at the pin27 of
P IC501 is approx.2Vp-p
Confirm that the signal from
pin24 IC561 is OVas a
accelerated pulse during
Tracking error waveform at TOC reading : approx 400ms
(See fig-1)
Tracking Tracking Disc to be
Dise i: otataes ansinias, | bakedtostep Automatic tuning o
oe C reading =: 3
ee oAtsommalle magsureniont finishes Tracking error balance
Buginatic litude and
ae paanee 9 OF s0omvidiv
2ms/div —Fig.1
Automatic tuning of
Focus error balance
Automatic tuning of
Focus error gain
Automatic tuning of
Tracking error gain
Play a disc