Sony PVM-20M2U Service Manual page 31

8-3. Confirmation of screen
Confirm that the screen is as shown in Fig.5-8.
~------
20" 12.3cm
'
'
'
'
T
The small circle is slightly cut.
20" 9.00cm
Up to the beginning of silk
Flg.5-8
9. Writing adjustment results
Write the adjustment results.
The screen is
almost centered.
Note : Do not tum off the power before writing the adjustment
results; otherwise, they will all be lost.
j3.
Signal system adjustment
I
1. SUB CON adjustment during NORM and
H/V
DL
Note : HIV-DL is not applicable to the group of models 3.
Adjustment must be completed before the HUE adjustment
of NTSC358/443.PAL.
I. Input a vertical white line signal.
Note : Use a vertical white line signal (without 525 burst; H width
of 3J.JS; l OOIRE).
2. CONT ... 80%
BRT .... 50%
3. Connect the probe of an oscilloscope to CN401 @PIN on the A
board.
4. Set the unit in the service mode.
5. Temporarily input "69" as an adjustment value for SUB.BRIGHT.
Set the values in Table 5-7 as BIAS and GAIN data of C. TEMPI
and C.TEMP2.
Table 5-7
Group of models
1, 4 2,3,5
BIAS
512 400
GREEN
GAIN
700 700
GREEN
6. Adjust the pedestal or the distance between SYNCTIP and
WHITE by means of
I sUB CON <4:3, NOR>i,
ISUBCON<4:3.HNDELAYI, ISUBCON<l6:9,NOR>i,
and
I SUB CON <16:9, NOR>
I,
SUB CON <4:3. NOR>
SUB CON <16:9. NOR> (Fig.5-9)
J.-------
: Make adjustment
: so that the values
; are as shown on the table.
Group of
models
4:3
16:9
'
'
SUB-CON 4:3.
HN-DL
SUB-CON 16:9.
HN-DL
4 1
5
1.39Vp-p 1.16Vp-p 1.37Vp-p
1.22Vp-p 1.04Vp-p 1.19Vp-p
Fig. 5-9
SUB CON <4:3. HIV DELAY>
2
1.47Vp-p
1.32Vp-p
SUB-CON <16:9. HIV DELAY> (Fig.5-10)
Group of
models
-----------------.
Make adjustment :
so that the values :
are as shown on
the table.
'
'
' '
' '
'
•
SUB-CON 4:3.
HN-DL
SUB-cON 16:9. HN-DL
4
1 5 2
3
1.47Vp-p
1.32Vp-p
4:3
1.39Vp-p 1.16Vp-p 1.37Vp-p 1.47Vp-p
16:9 1.22Vp-p 1.04Vp-p 1.19Vp-p
Fig.S-10
Note: Not applicable to PVM-l4MIJ
1.32Vp-p
-31-