Alignments - Philips TC8.1L CA Service Manual

8. Alignments

8.1 How to Put the Set into Factory Mode
• Turn down the volume to "0" by pressing "VOL-" button on
the set (front panel), followed by "DISPLAY" button on the
remote control.
• Press the "OK" button on the remote control.
• Press the "CH+" or the "CH-" button to select the parameter
you want to adjust.
• Press the "VOL+" or the "VOL-" button to adjust the
selected parameter.
• To put the new values into the memory, leave the factory
mode with the "MENU" button on the remote control.
1 2
1 1
Alignments
8.2
Figure 8-1 Test pin & potentiometer position
TC8.1L CA
Adjustment of the B+ (BAT) voltage
1. Apply the Philips standard test pattern to the RF input.
2. Connect a DC voltmeter (range >200 V) to ground and
jumper J809 [1].
3. Adjust potentiometer VR840 [2] in STANDARD mode in
such a way the voltage reading is 120 ±2.5 V.
Note: in sets where VR840 is not present, this voltage cannot
be adjusted. In case the voltage is out of range, the defective
part(s) should be located and replaced.
8. EN 21
H_17630_016.eps
271107