Samsung VP-L100 Service Manual page 61

Alignment and adjustment
4. Y-FM Deviation Adjustment (Video Block)
Note : You have to do the ÒY-FM Carrier FrequencyÓ
adjustment and the ÒPB Output LevelÓ
adjustment
before you do the Y-FM Deviation adjustment.
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. When you adjust in record
mode, especially, you can not see the
waveform of playback so that you need to do
it carefully.
1) Get into the VCR adjustment.
2) Confirm the adjustment mode is 3:DEVIATION in
OSD.
If not, fit the adjustment mode with the MENU
(mode change) button.
3) Connect the camcorder and the Pattern
generator(100% color bar) with A/V cable.
4) Set the camcorder to VCR recording for over 2
minutes with the pattern generator.
5) Connect the oscilloscope to the camcorderÕs video
output.(or Pin #10 of CN502)
6) Rewind the racorded portion you did and press
the play button.
Confirm the waveform of oscilloscope like as
below in playing-back mode.
7) If not OK, you have to do the step 3),4),5) and 6)
after readjustment.
-.In case of the waveform is more than
specification.
Press the C.RESET(data down) button to adjust
to downward the waveform in STOP mode.
Be sure to press the TITLE(confirm) button to
update the setting.
Repeat the step 3),4),5) and 6).
-.In case of the waveform is less than specification.
Press the DISPLAY(data up) button to adjust to
upward the waveform in STOP mode.
Be sure to press the TITLE(confirm) button to
update the setting.
Repeat the step 3),4),5) and 6).
8) If completed, press the MENU(mode change)
button to move to the next adjustment mode.
*. If you want to stop adjustment, do power
resourcing.
5-40
5. Record Y Level adjustment (Video Block)
: Record Y Level adjustment is fixed to EVR data
as follows .
-.SCL100 / SCL150 : B9
-.VP-L100/VP-L150 : B5
1) Get into the VCR adjustment.
2) Confirm the adjustment mode is 4:REC Y. in OSD.
If not, fit the adjustment mode with the MENU
(mode change) button.
3) Confirm EPR:B9 in OSD.
4) If not the data, adjust the data to EPR:B9(or B5)
with the DISPLAY (data-up) and the C.RESET
(data-down).
Be sure to press the TITLE(confirm) button to
update the setting.
5) If completed, press the MENU(mode change)
button to move to the next adjustment mode.
*. If you want to stop adjustment, do power
resourcing.
6. PB Outptu Level adjustment.
1) Get into the VCR adjustment.
2) Confirm the adjustment mode is 4:REC Y. in OSD.
If not, fit the adjustment mode with the MENU
(mode change) button.
3) Connect the oscilloscope to the camcorderÕs video
output.(or Pin #10 of CN502)
4) Playback the camcorder with SP mode color bar
tape.
5) Adjust the wave formÕs level like as below with the
DISPLAY(data-up) and the C.RESET(data-down).
Be sure to press the TITLE(confirm) button to
update the setting.
6) If completed, press the MENU(mode change)
button to move to the next adjustment mode.
*. If you want to stop adjustment, do power
resourcing.
APPROX.
0.7V
APPROX.
0.3V
WHITE ( APPROX. 100% )
1.0 0.05Vp-p
H
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