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PVM-9221ME
SECTION
4
CIRCUIT ADJUSTMENTS
1. Oscilloscope
2. Digital multimeter
3. Color-bar/pattern generator
(2)
INPUT
SIGNAL
When
making these adjustments, supply a color-
bar or an off-air signal.
noted.
CIRCUIT
ADJUSTMENTS
Circuit
Page
pas aigh ay
Board
1H DELAY
V. DELAY
LINE PULSE DELAY
SUB CONTRAST
SECAM COLOR LEVEL
ANT PAL
SUB COLOR
APC
KILLER POINT
BA
19-21
CHROMA TRAP
SECAM (ID)
SECAM (B-Y)
BAT
ACC
POWER SUPPLY OPERATION|
FB | 22 |
BLANKING OPERATION
22-24
CHECK
H BLANKING
H FREQ
V LINE
UNDER SCAN, V SIZE
V SIZE
V CENT
4-1. BB BOARD
ADJUSTMENTS
H DELAY
ADJUSTMENT
1. 'Input @PAL color bar signal.
PICTURE
. .80%
:
LINE PULSE
DELAY
ADJUSTMENT
1. Input an color bar signal.
2. Set the DELAY
mode.
2. Observe the connector BB-2 pin @ waveform on
pin @ort BA-1.
the oscilloscope, and adjust RV265 for 40 + tusec.
|
4. Adjust RV257
for the waveform
to becomes as
Fig. 7.
oscilloscope
Fig. 1
oscilloscope.
V. DELAY ADJUSTMENT
1. Input a PAL color bar signal.
PICTURE
80%
BRT
50%
2. Observe the connector BB-2 pin
waveform on
arene
the oscilloscope, and adjust RV266 for 10 + 1Imsec.
10 + ims
3.
Connect dual oscilloscope at pin @) of BB-3 and.
waveform ef connector BA-1 pin @
PVM-9221ME
PVM-922
oscilloscope
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