Audio Sub Menu - Philips 13PT30L1 Service Manual

Service Blanking (SBL):
Service Blanking provides a straight cutoff line in the center of the raster. It is useful when centering the raster.
It can also be used in adjusting the yoke and setting vertical size and linearity.
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 Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select SBL.
5. Use the Menu Left/Right keys to toggle SBL ON or OFF.
6. With SBL on, VSH can be used to center the raster on the fiduciary marks (the small notches in the
phosphor on the right and left edge of the CRT). These are absolute center.
7. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu Up/Down
buttons.
8. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM menu.
Delta HSH for 60Hz (H60):
Note: This adjustment should not be changed from the factory preset value (10).
Delta VAM for 60Hz (V60):
Note: This adjustment should not be changed from the factory preset value (5).

Audio sub menu

The audio sub menu item values are stored in EEPROM if this sub menu is left.
A sample display of the Audio sub menu is shown below.
The Audio sub menu contains the following item on stereo chassis:
Sub Menu: AUDIO
AT Attack time at AVL
Values Remarks
1 – 4 Normal setting is 4.