Philips AQ6548/01Z - Manual (Page 11)

Troubleshooting
If a fault occurs, first check the points iisted beiow before taking the
unit for repair. If you are unable to remedy a problem by following these
suggestions, consult your dealer or service centre.
Warning: Under no circumstances should you try to repair the set
yourself, as this would invalidate your guarantee.
PROBLEM CAUSE SOLUTION
General
No power -Wrong battery
polarity
- Batteries ex­
hausted
• Insert batteries
correctly
• Replace batteries
Hum when using
mains adaptor
-Adaptor used is not
regulated type
• Use Philips SBC6650
or other standard
regulated 3V DC
adaptor
No sound
-Volume is not
turned up
-Headphones is not
connected
• Turn up volume
• Connect headphones
jack into headphones
socket
Poor sound quality - Headphones plug
not fully inserted
• Insert plug fully
Unit does not react
to operation of any
button
- Electrostatic
discharge
• Press RESET button
using ballpoint pen
(hole on back of set)
Display is not
working properly
- Electrostatic
discharge
•Press RESET button
using ballpoint pen
(hole on back
of set)
No memory
- Batteries are
exhausted
• Replace with new
batteries, then re­
program settings