Focusadjustment; Deflection System Adjustment; Deflection System Check; Vertical Deflection Rough Adjustment - Sony TRINIT PVM-20M7MDE Service Manual

Color video monitor
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I
N. Focus Adjustment
I
Connect the input signal to LINE A connector.
1.
lnputthe625monoscopesignal.
2. Adjust
the
controls of the FBT (fly-back transformer) T3003
=·=
until an optimum focused image is obtained on entire display.
IV.
Deflectlon System Adjustment
I
Connect the input signal to LINE A connector.
1. Deflection System Check
1.
Input the
625
monoscope signal.
2. Enter
the
Service Mode.
3. Trytoadjust~respectivelyandchecktheresult
on display. (Never write the data after
adjustment)
4. Select
the
underscaa mode
(refeITed
to
!IS
u,S-hereafter).
5. Trytoadjust~respectivelyandchecktheresult
on display. (Never write the data after adjustment.)
6. Select the 16: 9normalscanmode(referredto as N/Shereafter).
7. Trytoadjust~respectivelyandchecktheresult
on display. (Never write the data after adjustment.)
8. Select1he16:9U/S.
9. Trytoadjust~respectivelyandchecktheresu\t
ondisplay. (NeverwritethedataafteradjustmenL)
10. Selectthe4:3N/S.
11. Read the data.
2. Vertical Deflection Rough Adjustment
1. Inputthe625monoscopesignal.
2. Set the CONT and BRT controls to the center click positions.
3. Enter the Service Mode~).
4. Adjust
PAT 4 · 3 N/S Y SIZE
untiltheverticalpicturesizeis
11 divisions.
5. Selectthen~.
Adjust
PAL 4·3
N(S
Y LIN
BAI
PAI 4·3N/SYIINLIN
toadjustroughlytheverticallinearity.
6. If vertical size becomes other than 11 divisions, select
iJcm
~again
and adjust
PAI
4·3N/SYSIZE
untiltheverticalpicturesizeis
!!divisions.
7. Writethedata.
PVM-20M7MDE
3. Horizontal Deflection Rough Adjustment
l. Inputthe625monoscopesignal.
2. Set the CONT and BRT controls to the cent.er click positions.
3. EntertheServiceMode~).
4.
Adjust
PAT 4·3 N/S H SIZE
untilthehorizontalpicturesizeis
15 divisions.
5. SelectthenitemNo
15-18
Adjllst
PAT 4·3 NJS H KEY
PAL
4·3
N/S H KEYBAL
PAI 4·3 N/S H PIN
PAI 4 · 3 N/S H PJNRAJ
to adjust roughly the horizontal deflection system.
6. Jfhorizontalsizebecomesotherthan
lldivis.ions,select
~again
and adjust
PAI 4·3
N/S H SIZE
untilthehorizontalpicturesizeis
IS divisions.
7. Writethedaia.
[w-
[O]-[ill]
[m]-[O]-[ill]
[ru-[O]-[[O]
[U]-[O]-[DJ
-35-

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