Philips 50PF7320/10 Service Manual page 73

8.3.4 ADC Gain and Grey Scale Alignment
The table below shows a number of NVM settings used for
each model of TV set. Be sure to use the correct editor in the
SAM menu (NVM Editor or SC NVM Editor), because the first
one is used for the Hercules NVM, and the second one for the
SCALER (SC) part of the TV set. For further important NVM
settings, see also the other NVM tables elsewhere in this
manual.
Caution:
• Do not change the NVM settings without
understanding the function of each setting, because
incorrect NVM settings may seriously hamper the
correct functioning of the TV set!
• Do not change the Scaler NVM settings, as this will
hamper the DVI functionality of the TV set!
• Always note down the existing NVM settings, before
changing the settings. This will enable you to return to the
orgininal settings, if the new settings turn out to be
incorrect.
Table 8-1 ADC gain and grey scale alignment
SDTV ADC Gain settings: Use the NVM Editor in SAM to set these values in
Hercules NVM
Setting Address
(decimal value)
NVM_ADC_GAIN_R
NVM_ADC_GAIN_G
NVM_ADC_GAIN_B
SDTV Greyscale settings: Use the SC NVM Editor in SAM to set these values
Scaler NVM
Setting Address
(decimal value)
ADC_RED_OFFSET2
ADC_GRN_OFFSET2
ADC_BLU_OFFSET2
ADC_RED_GAIN
ADC_GRN_GAIN
ADC_BLU_GAIN
PC Greyscale settings
Scaler NVM
Setting Address
(decimal value)
ADC_RED_OFFSET2
ADC_GRN_OFFSET2
ADC_BLU_OFFSET2
ADC_RED_GAIN
ADC_GRN_GAIN
ADC_BLU_GAIN
HD Greyscale settings
Scaler NVM
Setting Address
(decimal value)
ADC_RED_OFFSET2
ADC_GRN_OFFSET2
ADC_BLU_OFFSET2
ADC_RED_GAIN
ADC_GRN_GAIN
ADC_BLU_GAIN
the Hercules NVM
These models are with ADC &
Columbus 3D Combfilter
Settings
(decimal
006 143 143 143 075 - 155
007 191 191 191 200 - 250
008 143 143 143 075 - 155
in the Scaler NVM
These models are with ADC &
Columbus 3D Combfilter
Settings
(decimal
338 080 080 080 050 - 110
339 080 080 080 050 - 110
340 080 080 080 050 - 110
341 154 154 154 045 - 095
343 154 154 154 045 - 095
345 154 154 154 045 - 095
These models are with ADC &
Columbus 3D Combfilter
Settings
(decimal
325 080 080 080 040 - 090
326 080 080 080 040 - 090
327 080 080 080 040 - 090
328 154 154 154 180 - 270
330 154 154 154 180 - 270
332 154 154 154 180 - 270
These models are with ADC &
Columbus 3D Combfilter
Settings
(decimal
351 064 064 064 050 - 090
352 082 082 082 050 - 090
353 064 064 064 050 - 090
354 159 159 159 120 - 200
356 144 144 144 120 - 200
358 147 147 147 120 - 200
Alignments
8.3.5 Sound
• For NICAM sets: see paragraph 8.3.3.
• For other sets: No adjustments needed for sound.
8.3.6 Options
Options OP1...OP7 in the SAM menu can be used for quickly
restoring 64 features or settings of the HERCULES part of the
TV set to their orginal default factory values (8 groups of 8
features/settings each). When the decimal value of one option
byte OP1...OP7 is changed (see the first table below) then a
group of 8 bits, representing 8 HERCULES options or features,
is changed as well (see the second table below for a detailed
description of the features or settings that are changed).
The second table shows which option byte (OP1...OP7)
represents which group of 8 option bits. Each bit (0...7)
switches a particular HERCULES feature or setting ON or OFF,
depending on its value (1 or 0).
It is also possible to change the features or settings mentioned
in the second table directly at bit level, by means of the NVM
Editor in the SAM menu. In the NVM Editor, first the correct
NVM address (ADR) has to be entered, then the correct value
(VAL, 1 or 0) for each bit (see second table), and finally the
settings have to be stored (STORE). For quickly restoring the
HERCULES part of the TV set to its original factory settings,
however, it is more convenient to simply enter the default
factory settings OP1...OP7 that are given in the first table
Range
below. How to do this, is described in the next paragraph.
value)
How to Change an Option Byte
As has been explained above, an Option byte (OP) represents
a number of different HERCULES options. Changing these
bytes directly makes it possible to set all HERCULES options
very fast. All options are controlled via seven option bytes.
Select the option byte (OP1.. OP7) with the Menu Up/ Down
keys, and enter the new (decimal) value. For the correct
Factory Default settings, see the first table below. For more
detailed information, see the second table.
Range
Leaving the Option submenu saves the changes in the Option
value)
Byte settings. Some changes will only take effect after the set
has been switched "off" and "on" with the AC power switch (cold
start).
Table 8-2 Option codes OP1...OP7
Range
value)
Options (can be changed only via the SAM
How to Change Options at Bit Level
If you wish to know which features or settings of the
Range
HERCULES are changed via OP1...OP7, or if you want to
value)
change each option or feature bit by bit, use the more detailed
table below.
Note: the table below contains only part of the NVM settings
that can be changed. A second range of settings and features
can be found in Chapter 5 of this manual, in table NVM Default
values. The settings mentioned there can only be changed via
the NVM editor. For further settings, see also the table "ADC
Gain and Grey scale alignment" elsewhere in this manual.
LC4.9E AA
Option table for quickly restoring the HERCULES to its
Factory Default settings
OP1 152
OP2 37
OP3 79
OP4 241
OP5 252
OP6 27
OP7 19
Total decimal value for each
menu) option per model number
8. EN 73
152 152
37 37
79 15
241 241
252 252
27 27
19 19