Philips L04A AB, Руководство по обслуживанию, Страница: 71 / 90

Alignments EN 71 L04A AB 8.
• OB63: ACTIVE CONTROL
–
0 : Active Control feature is disabled or not applicable.
– 1 : Active Control feature is enabled.
• OB62: VIDEO TEXT
–
0 : Video Text (DW with TXT) is disabled or not
applicable.
– 1 : Video Text (DW with TXT) is enabled.
– Note: For EU only.
• OB61: LIGHT SENSOR
–
0 : Light sensor feature is disabled or not applicable.
– 1 : Light sensor feature is enabled.
• OB60: DUAL TEXT
–
0 : Dual Text and Text Dual Screen are disabled or not
applicable.
– 1: Dual Text and Text Dual Screen are enabled.
Option Byte 7 (OP7)
• OB77: TIME WIN1
–
00 : The time window is set to 1.2 s.
– 01 : The time window is set to 2 s.
– Note :The time-out for all digit entries depends on this
setting.
• OB76: MALAY
–
0 : Malay is disabled.
– 1 : Malay is enabled.
• OB75: THAI
–
0 : Thai is disabled.
– 1 : Thai is enabled.
• OB74: Reserved
–
Default setting is “0”.
• OB73: Reserved
–
Default setting is “0”.
• OB72 Reserved
–
Default setting is “0”.
• OB71 Reserved
–
Default setting is “0”.
• OB70: Reserved
–
Default setting is “0”.
8.3.2 Tuner
Note: Described alignments are only necessary when the NVM
(item 7601) is replaced.
IF PLL
This adjustment is auto-aligned. Therefore, no action is
required.
AGC (AGC take over point)
1. Set the external pattern generator to a colour bar video
signal and connect the RF output to aerial input. Set
amplitude to 10 mV and set frequency to 61.25 MHz
(channel 3).
2. Connect a DC multimeter to pin 1 of the tuner (item 1000
on the main panel).
3. Activate the SAM.
4. Go to the TUNER sub menu.
5. Select AGC with the UP/DOWN cursor keys.
6. Adjust the AGC-value with the LEFT/ RIGHT cursor keys
until the voltage at pin 1 of the tuner lies between 3.8 and
2.3 V (default value is “20”).
7. Switch the set to STANDBY, in order to store the
alignments.
CL (Cathode drive level)
Always set to “5”.
8.3.3 White Tone
In the WHITE TONE sub menu, the values of the black cut off
level can be adjusted. Normally, no alignment is needed, and
you can use the given default values.
The colour temperature mode (NORMAL, COOL and WARM)
and the colour (R, G, and B) can be selected with the UP/
DOWN RIGHT/LEFT cursor keys. The value can be changed
with the LEFT/RIGHT cursor keys. First, select the values for
the NORMAL colour temperature. Then select the values for
the COOL and WARM mode. After alignment, switch the set to
STANDBY, in order to store the alignments.
Default settings:
•
NORMAL:
–
NORMAL R= “26”
– NORMAL G= “32”
– NORMAL B= “27”
• COOL:
–
DELTA COOL R= “-3”
– DELTA COOL G= “0”
– DELTA COOL B= “5”
• WARM:
–
DELTA WARM R= “2”
– DELTA WARM G= “0”
– DELTA WARM B= “-6”
8.3.4 Geometry
The geometry alignments menu contains several items to align
the set, in order to obtain correct picture geometry.
Figure 8-4 Geometry alignments
1. Connect an external video pattern generator to the aerial
input of the TV-set and input a crosshatch test pattern. Set
the generator amplitude to at least 1 mV and set frequency
to 61.25 MHz (channel 3).
2. Set 'Smart Picture' to NATURAL (or MOVIES).
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VERT. SLOPE
VERT. SHIFT
VERT. AMPLITUDE
V.S-CORRECTION
HOR. SHIFT
HOR. AMPLITUDE
E/W PARABOLE
UPPER E/W CORNER
LOWER E/W CORNER
E/W TRAPEZIUM
HOR. PARALLELOGRAM
HOR. BOW
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