HOW TO ENTER SERVICE MODE TO PHILIPS VARADAN [ZAPPAA] 14 / 20 / 21 ( USES TDA 9587H/N1/3/0481) IC AS SYSTEM CONTROL

To enter service mode

Press [Menu] button  on the remote control, and enter digits (062596). The service mode screen will be displayed.

                                                             OR

Short circuit wires 9631 & 9641, on the Mon-Carrier and switch ON the set. (Remove the short after start up)

To call an item to adjust, use Ch+ / Ch--ve buttons.
To change the data value to selected item, use Vol+ / Vol --ve buttons.
To exit from service mode, switch OFF the set.