Alignments - Philips 21PT2327/79 Service Manual

8. Alignments

Index of this chapter:
8.1 General Information
8.2 Factory Mode (Service Menu, Service Mode)
8.3 Alignment procedure
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
8.1 General Information
Perform all electrical adjustments under the following
conditions:
• Power supply voltage: 100 - 240 V
• Connect the set to the mains via an isolation transformer
with low internal resistance.
• Allow the set to warm up for approximately 15 minutes.
• Measure voltages and waveforms in relation to correct
ground (e.g. measure audio signals in relation to
AUDIO_GND).
Caution: It is not allowed to use heatsinks as ground.
• Test probe: Ri > 10 Mohm, Ci < 20 pF.
• Use an isolated trimmer/screwdriver to perform
alignments.
8.2 Factory Mode (Service Menu, Service Mode)
For certain alignment procedures, you will need to enter
Factory Mode (Service Menu). See also figure "" on next
page.
8.2.1 How To Enter
1. Press and hold the VOLUME DOWN key on the TV tightly
until minimum level.
2. Then, while holding the VOLUME DOWN key, press the
"DEL / [i+]" key on the remote control (RC).
8.2.2 How To Navigate
• Press "CH+ (^) / CH- (v)" cursor key on the RC to select
option.
• Press "VOL- (<) / VOL+ (>)" cursor key on the RC to adjust
or select option.
• Press "0-9" or "SOUND SYS" key on the RC as the shortcut
key to directly access certain factory menu's (see figure
"Group list overview").
• All changes in factory data will be saved in EEPROM
automatically.
8.2.3 How To Exit
Press the RC "POWER / F" button, or power down the set with
the main switch, to exit the Factory Mode.
, 50/60 Hz (± 10%)
AC
Alignments TC8.1A CA 8. EN 23