Philips DC633 - Mounting Instructions and Connections; Power Supply Requirements; Preparing Connectors A and B

Aerial: Good reception is only possible with a good aerial. Position the aerial as far as possible from
the ignition assembly. The aerial earthing bar or strap must contact clean metal. Protect this contact
against corrosion with silicone grease or another rust preventer.
Adaptor cables: Specific adaptor cables (which simplify connection of the set) are available for
many cars. Refer to the table at the end of this booklet. Contact your dealer for further information.
1 POWER SUPPLY
Voltage and polarity: The set must be connected to a 12 V car battery with negative terminal
to earth (car chassis).
¢ Use the same earthing point for the radio and all other audio equipment (to minimize interference).
Note: Permanent | 2V supply must be connected to ensure that CD* changer functions correctly.
WARNING: To prevent short-circuiting, disconnect the negative
car battery terminal until the set has been mounted and connected.
PREPARING CONNECTOR A
[Hi] Recommended power supply connections
BROWN lead [A8]: Connect to an earthing point on the car body.
[2] RED lead [A7]: Connect to a switched 12 V supply.
[3] YELLOW/RED lead [A4]: Connect to a permanent 12 V supply.
(Alternative power supply connections (for ‘ON/OFF LOGIC')
The 'ON/OFF LOGIC" feature in this set functions only if the permanent 12V supply and
switch 1 2V supply are connected as below. Consult your car service manual or check with your
dealer to confirm this. See illustration for correct connection.
BROWN lead [A8]}: Connect to an earthing point on the car body.
RED lead [A7}: Connect to a permanent 12 V supply.
YELLOW/RED lead [A4]: Connect to a switehed 12 V supply.
4] See 'INITIALISATION', option 'LOGI' to activate this feature.
OPTIONAL CONNECTIONS
Electronic/motor aerial: Connect the supply for an electronic aerial o: the control lead for
the relay of an automatic motor aerial to pin [A5]. Use the small contact supplied.
Do not use this connection point for direct supply of the aerial motor!
1.4] Pilot light: When the car headlamps are switched on, the on/off control of the radio is illuminated {even
when the radio is switched off}. Connect pin [A6] to the dashboard illumination wiring of your car. Use the
small contact supplied.
[Ej Telephone mute: If your car telephone provides a mute signal, it can be used to automatically interrupt
the set's audio output. Connect the telephone mute wire to connector [A1]. Use the small contact supplied.
Choose required settings from INITIAUSATION mode.
Note: In certain VW and Opel/Vauxhall cars, the connector [A1] i s used as a speed-dependent volume
control (GALA). Ask your authorized VW or Opel/Vauxhall dealer to modify this connection if you
want to use the telephone mute feature in place of GAIA feature.
Flee
PREPARING CONNECTOR B (FOR LOUDSPEAKERS}
- Only use loudspeakers which have an impedance of 4 ohms.
- Ensure that the loudspeakers are connected in phase by using marked speaker
terminals for the phase (+) connections.
~ Do not connect any of the loudspeaker leads to earth!
- Do not connect a booster/amplifier directly to the loudspeaker outputs!
- Do not connect loudspeakers via an external fader!