Adjustment - Kenwood LD-K300V Service Manual

MAIN UNIT(X34-1033)
INPUT
No. ITEM
SETTING
TILT
1 LD TEST DISC
BALANCE
FOCUS
2 TEST DISC
BALANCE
Setting the TEST MODE (Short-circuiting the CN7 pin 1 and 2 in AC IN mode : TE OFF)
TRACKING
3 TEST DISC
BALANCE
TEST DISC
FOCUS Apply a signal
4
GAIN (1.0kHz/0.2Vp-p) to
CN3 pins 4 and 5 .
TEST DISC
TRACKING Apply a signal
5
GAIN (1.3kHz/0.2Vp-p) to
CN3 pins 1 and 2.
VIDEO
6 LD TEST DISC
LEVEL
7 4Fsc POWER ON
VIDEO CD UNIT (X35-2170-20) Setting the power on
VIDEO CD
8 POWER ON
CLOCK
Note : L.P.F. : 33kΩ+1000pF or so, CD disc : CD test disc (SONY YEDS-18 or equivalent), LD disc : CAV30cm
(with digital sound), STILL : Remote controller's key.
fig. : Waveform (P.12)

ADJUSTMENT

OUTPUT PLAYER
SETTING SETTING
Frame No.19,001
Connect the STILL (Still image)
TV monitor to the
video output. *Frame No.23,402
STILL (still image)
Connect an
Frame No.20,000
oscilloscope to RF :
STILL (still image)
CN3 pin 6 (EFM).
Connect an
oscilloscope to RF : PLAY
CN3 pin 6 (EFM).
Connect an
oscilloscope to TE OFF
TE : CN3 pin 1.
Connect an L.P.F.to
CN3 pins 4 and 5, to
which connect an PLAY
oscilloscope or two
AC voltmeters.
Connect an L.P.F.to
CN3 pins 1 and 2, to
which connect an PLAY
oscilloscope or two
AC voltmeters.
Terminate the video Frame No.100
output with a 75Ω STILL(still image)
resistor and connect
an oscilloscope to *Frame No.13,000
both ends. STILL(still image)
Connect a
frequency counter to
STOP
check land (14M) of
IC3 pin 7.
Connect a
frequency counter to
check land STOP
(13.5MHz) of
IC2 pin 99(R16).
LD-K300V
ALIGNMENT ALIGN
POINT FOR
Minimize the
crosstalk on the
screen.
VR3
Eye-pattern is
maximum and clear.
Maximize the RF
VR2 signal (eye pattern)
amplitude.
Symmetry between
VR1
upper and lower.
Two VTVMs should
VR4
read the same level.
Two VTVMs should
VR5
read the same level.
Video signal
VR7
amplitude to 1.0Vp-p
TC1 14.31818MHz±50Hz
TC1 13.5MHz±50Hz
FIG.
(a)
(a)
(b)
3