I III. SIGNAL SYSTEM ADJUSTMENT!
1. SUB CON ADJUSTMENT
*This adjustment ought to have completed before HUE adjust-
ment of NTSC 358/443 and PAL.
l. Input a vertical white line signal.
Note : Use a vertical white line signal
(525 no burst, H width
3µS, IOOIRE).
2. Set:
CONT······ 80%
BRT·········50%
3. Connect the oscilloscope probe to A board CN401 Pin 3.
4. Put the unit into service mode.
5. Adjust SUB BRT .
6. Adjust the pedestal or the distance between the sync tip and
white with
j SUB CON ( 4 : 3 NOR) j.
SUB CON (4: 3 NOR)
(Fig. 7).
Adjust to the values
on the below;
SUB-CON 4 : 3, NOR
4:3
Fig. 7
2. SUB PHASE Adjustment
20"
l.55Vp-p
14"
l.50Vp-p
l. Input a component color bar (R-Y) and EXT SYNC (Beta O
level signal).
2. Put the unit into Ext Sync mode.
3. Connect the oscilloscope probe to IC404 Pin 30 or TP402.
4. Put the unit into service mode.
5. AdjustjSUB PHASEJto minimize the output waveform
(15 mVp-p max.) (Fig. 8)
tSmVp-p max.
Fig. 8
PVM-1353MD/1453MD
3. SUB CHROMA Adjustment
1. Input a component color bar (R-Y, Y, B-Y). (Beta O level
signal).
2. From the menu, make the Component Level Beta 0.
3. Connect the oscilloscope probe to IC404 Pin 30 or TP402.
4. Put the unit into service mode.
5.
UsingjSUB CHROMA NORMALJ, adjust so that the tops of
the waveform line up as in the diagram below. (Fig. 9)
··························*·····
20mV max.
Adjust so that the levels of the first peak and the fourth
peak are the same.
Fig. 9
4. R-Y LEVEL ADJUSTMENT
1. Input a component color bar (R-Y, Y, B-Y). (Beta O level
signal).
2. From the menu, make the Component Level Beta
O.
3. Connect the oscilloscope probe to IC404 Pin 41 or TP401.
4. Put the unit into service mode.
5. Using
! R-Y LEVEL COMPONENT J, adjust so that the tops
of the waveform line up as in the diagram below. (Fig. 10)
30mVmax.
B
... c ... :::::::;::::::::::::::: ... L ..
D ··················t····
20mVmax.
Fig. 10
Adjust so that B=D above (20 mV max.) Check that the
difference between D and
C is no greater than 30 mV
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