Alignments - Philips ME6 Service Manual

8. Alignments

Index of this chapter:
8.1 General Alignment Conditions
8.2 Hardware Alignments
8.3 Software Alignments
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
General: The Service Default Mode (SDM) and Service
Alignment Mode (SAM) are described in chapter 5. Menu
navigation is done with the Cursor Up, Down, Left or Right keys
of the remote control transmitter.
8.1 General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
Mains voltage and frequency: 110-240 V / 50/60 Hz (26 and
32"), 220-240 V / 50/60 Hz (37").
Allow the set to warm up for approximately 10 minutes.
Test probe: Ri > 10 MΩ; Ci < 2.5 pF.
8.2 Hardware Alignments
There are no hardware alignments foreseen for the 26" and 32"
models. In the 37" and 42" models it can be necessary to adjust
the Backlight Voltage.
8.2.1 Backlight Voltage Alignment
Switch "ON" the set and measure the voltage between pin 1 of
connector 1304 and pin 1 of connector 1309 (ground). Align
R3026 until this voltage is 24 V
Note: This is the procedure for LPL displays; for other brands
of LCD displays, as mentioned in the table "Panel size
settings", it is similar.
Caution: This voltage must be aligned very precisely: when it
is too high (> 27 V), it can destroy the inverters. When it is too
low (< 23 V) the backlight will not start up.
8.3 Software Alignments
With the software alignments of the Service Alignment Mode
(SAM) the geometry, white tone and tuner (IF) can be aligned.
To store the data: Use the RC button Menu to switch to the
main menu and next, switch to 'Stand-by' mode.
Note: For models with "Pixel Plus", the "Black Offset" (black
level offset) should NOT be changed in SAM. These offset
values of RGB should be set to "0", and should NOT be
adjusted. Any adjustment of these values will affect the low
light white balance.
+/- 0.1 V.
DC
Alignments LC4.31E AA 8. EN 105