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Pioneer LC-V4300C Service Manual page 90

Laser disc player

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13. CHECKING THE TILT OPERATION
l.
Connect
the TILT connector. Turn TILT
OFF by
using
the remote control unit.
2. Move
the tilt motor using
the (SKIP FV{D] or lSKIP
RWD] key and change TILT
ERR display
to
·oo~
or
•13" from •10•.
3.
Confirm that TILT ERR
converges
to "10
tolerance (OF
to
11r when TILT SERVO
is
turned
oil
by
the[SPEED
UP]key.
14. ELECTRICAL ADJUSTMENT
No.
Adjustment
Items
NTSC
cb.aractor genera-
tor freq.iency
adjustment
PAL charactor generator
frequency adjustment
ITTSC
TBC 4fsc
adjustment
PAL TBC 3.75MHz
adjU9tment
Video
level adju6tment
VCO (CCD) centering
frequency
adjustment
NTSC
lH
Delay
video
~ velndjustment
Burst
gate timing
adjustment
Adjuat
A,w,~y
VDl!M
CONT
VDEM
CONT
[fBC)
~,
VOEM
Adj11!.llng
Poiut
VC602
VC601
VC201
VC202
VR403
VR402
VR401
VR201
Measurement
Point
IC605pin6
IC206pin8
JC206 pi06
V IDEO OUT
terrninal
on
TRMB
8Ssembly
Q410Emitter
Q414Emitter
JC401
pins31
and
33
IC201
pin20
and
Q414Emitter
LD-V4300D
Player
Condition
Adjllstinr
Specificsti011
(MODE)
Power
ON
Adjust
clock frequency to
(NTSC)
14.318180Mfu±l0Hz..
Power
OK
Adjust
clock frequency
lo
(PAL)
I7.734476Mllz±l0Hz.
Power
ON
Adjust
clock
frequency to
{NTSC)
14.318180MHz±10Ht,
Powu ON
Adj1JSt
clock
frequency
to
(PAL)
3.7SOOOOMHt±
l0H:.
PLAY(PAL)
Chapterl
ll
Play
the testdisc
(JI) andadjust
the
level
to
tVp
-p±Slfo (Terminated 750).
(Refer
to
w1veform
2)
Pla1 Uie
test
disc.
Compare
the
output of
STILL
{NTSC) the
Q414 emitter with
that
of
the Q410
Framef5100
emitter,
and adjust
to 70µ:sec
±
1.4µt"
(lH
+61
.sec).
(Refer
to
y,•aveform
3)
NTSC
Play
the test
disc.
Compare
the tniilint
edge of
lhe
output
of 1C201
lo
the
le.adinf
edge
of
the output
of Q414,
and
del.ly
the
liming
for
l1isec ±0.lp:sec
(Refertowaveform4}
Play
the
test disc.
Compar, th
e trailing
edge
of
the
output of
[C201
to
lhe trailing
edge of the Output of Q4U.,
M.d
delay the
timing for
1.Sµsec±0.lµ:sec
(Refer towaveform4)
11
9

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