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PVM-20M7MDE
j
m.
Horizontal Oscillating Frequency Adjustment
I
1. PAL FO Adjustment
1. After turning on the power for five minutes or longer, input the
625monoscopesignal.
2. Set the CONT and BRT controls to the center click positions.
3. EntertheServiceMode(itemNo
JI 12 15 17)-
4. Adjust the following items coarsely such that a picture on
display does not show jitter.
PAI 4·3 N/S H QSC
PAL 4·3 N/S H SIZE
PAI 4·3N/SHKEY
PAL 4·3 N/S H PIN
5. ApplyDC+5Vto+9VtomJKfl..EREE.toenterthefreerun
mode.
6. Connect a frequency counter to
I£.JflJH.HD.
and adjust
PAI 4·3N/SHQSC
until the following specifications are satisfied.
• Specification:
H. OSC: 31.5~g-
4
kHi
7. Remove the external DC power supply.
8.
Write the data.
H. OSC: low
~
~
H. OSC: optimum
H.OSC:hlgh
Note:
If
an image on display is doubled when the external DC
power supPly
is
removed. increment data by +1 or +2
and write the data.
2.1125 FO Adjustment
I.
Input
the
HD (Japan) monoscope signal.
2. Perfonn the same adjustment as item 1. PAL FO Adjustment to
the following adjustment controls.
item No IOI 102 105 J06
1125 N/S H DSC
1125 N/S H SIZE
1125 N/S H PIN
1125 N/S H KBY
• Specification:
H. OSC; 33.75~8·
4
kHz
Note:
If an image on display is doubled or top of an image is
bent to the left when the external DC power supply
is
removed, increment data by
+
l or +2 and write the data.
3. FREE~PAL F0 Adjustment
I.
After turning on the power for five minutes or longer, remove
all the input signals.
2. Set the CONT and BRT controls to the center click positions.
3. EntertheServiceMode~.
4. SetthevalueoftheAGINGMODEto"l".
5.
item
Ng
2
3 6 J
6.
Adjust the following items coarsely such that
a
picture on
displaydoesnotshowjitter.
FREE PAI H OSC
FREE PAI H SJZE
FREE PAI H KEY
FREE PAI H
f'TN
7. Connect a frequency counter to
LE..l.Qf)1_
!:Il2
and measure
frequency. (Take note the measured value.)
8. Apply DC +5V to +9V
to
I£lflfJZ.EB.EE.
to enter the free run
mode.
9.
Adjust
FREE PAT H OSC
until the following specifications are satisfied.
• Specification:
H.
OSC:
33.75~8-
4
kHz
10.
Advance to the~
and set the value of the AGING
MODEto"ff'.
11.Writethedata.
Note: If an image on display is doubled or top of an image
is
bent to the left when the external DC power supply
is
removed, increment data by +I or +2 and write the data.
-34-
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