Samsung SCL300, Руководство по обслуживанию

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Samsung Electronics 5-36
Alignment and Adjustment
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
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
12
10
8
6
4
2
13
11
9
7
5
3
1
13 VIDEO OUT
12
11
10
9
8
7
6
5
4
3
2
1
AUDIO OUT R
PB RF
AUDIO OUT L
HD SW
VCR UNREG
JIG CS
VCR UNREG
JIG SCK
SS GND
JIG SO
JIG DETECT
JIG SI
AUDIO OUT R 14
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
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.
TAPE NORMAL TAPE FOR RECORDING
DC POWER SUPPLY, FREQUENCY COUNTER
IC201 PIN41
04
Y-FM CARRIER (NOR)
EQUIPMENT
OTHER
TEST POINT
ADDRESS
NAME
TAPE NORMAL TAPE FOR RECORDING
DC POWER SUPPLY, OSCILLOSCOPE
CN605 PIN13
05
Y-FM DEVIATE (NOR)
EQUIPMENT
OTHER
TEST POINT
ADDRESS
NAME