[. . . ] Note: If the LED blinks four times after every key press, the remote control is indicating that its batteries are running low. Because the SRU510 may use different signals for each make and even for different models of the same brand, it is advisable to test whether your TV responds to the SRU510. Check whether all the keys are working For an overview of the keys and their functions see `3. [. . . ] After the SRU510 has run through all the known codes, the search will stop automatically and the LED will stop flashing. 2 Look up the brand of your TV in the code list at the back of this manual. Com/urc you can directly select your device typenumber to find the right code. Keep keys 1 and 3 pressed simultaneously for three seconds until the LED flashes twice and then remains lit Then enter the code noted in step 2 using the digit keys. If the LED flashes once for an extended period, the code has not been entered properly or the wrong code has been entered. If the TV responds to all of the key commands, the SRU510 is ready for use. If the TV does not respond at all, or not to all of the key commands, start again from step 2 and try the next code from the list. The illustration on page 3 gives an overview of all keys and their functions. When pressed at the same time as a second key, the second key will get another function. Stores TV settings Try out other combinations with the SHIFT-key on your TV in order to find out which functions are available. ^ LED If you use the (fi) 'memory off' key to get to the next teletext page on your Philips TV, you can press the OK key for this. If the device does not respond at all, or not to all of the key commands, follow the instructions under `Setting the remote control'. If you want to add a function to the SRU510, you can contact the Philips service line for Universal Remote Control to ask for the 5-figure code for the extra function. Restoring the original functions of your remote control 1 Keep keys 1 and 6 on the SRU510 Pressed simultaneously for three seconds, until the LED flashes twice and then remains lit. [. . . ] If you cannot find any answers to your problems, write down the details of your device shown in the code list at the back of this manual. Look up the numbers of the models in the instructions accompanying the device or on the back of your device. When you call our helpline, make sure the device is to hand so that our operators can help you determine whether your remote control is working properly. [. . . ]