Samsung VPL500, Service Manual

Page: 66 / 147

Samsung Electronics 4-47
Alignment and Adjustment
l. Be sure to press the “PROGRAM AE(CON-
FIRM)” button on FUNCTION to memorize set-
ting.
m. Reset the power source so as to fix the new
data to the camcorder’s EEPROM.2-11. Y-FM
Carrier (Hi8)
2-11. Y-FM Carrier (Hi8)
: This adjustment is performed to set the sync-
tip level of the composite video signal.
Maladjusted Y-FM carrier impact to the play-
back picture, there may be black or white dot
noise.
a. Preparations
b. Connect a power source.
c. Get into the VCR adjustment mode.
d. Press the “FADE(MODE UP)” or
”BLC(MODE DOWN)” button of FUNCTION
so as to select the address OC.
e. Insert aHi-8 Tape to the camcorder.
f. Press the “START/STOP” button on the Rear
board so as to set the camcorder to RECORD-
ING mode.
g. Connect the frequency counter to the addressed
Test Point.
h. Press the “TITLE(DATA DOWN)/DSE(DATA
UP)” button so as to set the frequency to
5.99MHz ±0.02MHz
i. Be sure to press the “P.AE(CONFIRM)” button
on FUNCTION to memorize setting.
j. Reset the power source so as to fix the new data
to the camcorder’s EEPROM.
2-12. Y-FM Deviation (Hi8)
: This adjustment sets the Y_FM modulation
level in recording. For adjustment, playback
the self-recorded signal and observe the
VIDEO OUT signal.
Note :
It is a little difficult to adjust because you
can check the waveform in playback mode
even though the adjustment is performed
in VCR record mode.
So you have to do it carefully.
a. Preparations
b. Connect a power source.
c. Get into the VCR adjustment mode.
d. Press the “FADE(MODE UP)” or
“BLC(MODE DOWN)” button of FUNCTION
so as to select the address OD.
e. Insert a Hi-8 Tape to the camcorder.
f. Press the “START/STOP” button on the Rear
board so as to set the camcorder to RECORD-
ING mode.
g. Record for enough time to check the waveform
when you playback where you recorded in step f).
* 1 minute may be enough to check the wave-
form in playback mode.
i. Make sure that the waveform is to be as below.
(If OK, go to step l).
j. In case of the waveform level is bigger than
1Vp-p, press the Data Down button so as to set
to down the waveform level and if the wave-
form level smaller than 1Vp-p, press the Data
Up button so as to set to up the waveform level.
FREQUENCY COUNTER
NONE
IC 201 PIN 13
OC
Y-FM CARRIER (HI-8)
EQUIPMENT
OTHER
TEST POINT
ADDRESS
NAME
HI8 TAPE FOR RECORDING TAPE
APPROX.
0.7V
APPROX.
0.3V
WHITE ( APPROX. 100% )
H
1.0 0.02Vp-p
TAPE HI-8 TAPE FOR RECORDING
OSCILLOSCOPE
NONE
CN452 PIN13
OD
Y-FM DEVIAT (HI8)
EQUIPMENT
OTHER
TEST POINT
ADDRESS
NAME
APPROX.
0.7V
APPROX.
0.3V
WHITE ( APPROX. 100% )
H
1.0 0.02Vp-p