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Samsung SCL300 Service Manual page 57

8mm camcorder

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Alignment and Adjustment
2-6. Y-FM Carrier (NOR)
: 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
TAPE
NORMAL TAPE FOR RECORDING
EQUIPMENT
DC POWER SUPPLY, FREQUENCY COUNTER
OTHER
TEST POINT
IC201 PIN41
ADDRESS
04
NAME
Y-FM CARRIER (NOR)
b. Connect a power source.
c. Get into the VCR adjustment mode.
d. Press the ÒDATE/TIME(MODE UP)/TITLE
(MODE DOWN)Ó button of CAMCORDER so
as to select the address 04.
e. Insert a Normal 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 ÒEDIT + (DATA UP)/EDIT Ð (DATA
DOWN)Ó button so as to set the frequency to
4.38MHz ± 0.02MHz
i. Be sure to press the ÒMENU/ENTER(CON-
FIRM)Ó button of CAMCORDER to memorize
setting.
j. Reset the power source so as to fix the new data
to the camcorderÕs EEPROM.
5-36
2-7. Y-FM DEVIATION (NOR)
: 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
TAPE
NORMAL TAPE FOR RECORDING
EQUIPMENT
DC POWER SUPPLY, OSCILLOSCOPE
OTHER
TEST POINT
CN605 PIN13
ADDRESS
05
NAME
Y-FM DEVIATE (NOR)
b. Connect a power source.
c. Get into the VCR adjustment mode.
d. Press the ÒTITLE (MODE UP)/DATE/TIME
(MODE DOWN)Ó button of CAMCORDER so
as to select the address 05.
e. Insert a NORMAL 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 waveform
in playback mode.
h. Connect the oscilloscope to the addressed Test
Point.
14
13
12
11
10
9
8
7
6
5
4
3
2
1
14
AUDIO OUT R
13
VIDEO OUT
12
AUDIO OUT R
11
PB RF
10
AUDIO OUT L
9
HD SW
8
VCR UNREG
7
JIG CS
6
VCR UNREG
5
JIG SCK
4
SS GND
3
JIG SO
2
JIG DETECT
1
JIG SI
Samsung Electronics

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