Audio Adjustment - Philips 13PT30L1 Service Manual

Audio Adjustment:

Attack Time at AVL (AT):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote control
transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Audio sub menu.
3. Use the Menu Left/Right keys to enter the Audio sub menu.
4. Use the Menu Left/Right keys to adjust the value of AT.
5. Set the volume of AT to 4.
6. Upon completion of Audio adjustment, press the Menu button to return to the top level SAM menu.
Convergence and Purity Adjustments
Notes:
1. The following adjustments were performed with a Sencore VG91 Universal Video Generator.
2. Set the VG91 Generator as follows: STD TV Ch. 3, RF-IF Range set to HI, RF-IF Level set to NORMAL (1),
Video Pattern = Raster, R-G-B raster controls OFF, Mode Switch set to L+R, Audio Frequency set to
300Hz, and 0 Pilot (max. CCW).
3. Connect the RF output of the generator to the Television Antenna Input, and adjust the VG91 level to
remove any snow from the raster.
Pre-Convergence Procedure
Note: The degaussing procedure should be performed prior to this adjustment.
1. Place the multi-pole Purity and Convergence Assembly with the 2-Y pole purity rings directly in the gap
between the G2 and G3 (focus) grids as shown in the Convergence and Purity Assembly.