Gb) additional information, Maintenance, The cds – Philips CD 931 User Manual

Page 12: The player, Faults and their likely causes, Additional information

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ADDITIONAL INFORMATION

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MAINTENANCE

The CDs

• Never write on the printed side of a CD.
• Do not attach any stickers to the CD.
• Keep the shiny surface of the disc clean. Use a soft lint-free

cloth and always wipe the disc in a straight line from centre
to edge.

• Never use cleaning agents for conventional records.
• Detergents or abrasive cleaning agents should not be used

either.

The player

• A chamois leather slightly moistened with water is sufficient

for cleaning the player.

• Do not use cleaning agents containing alcohol, spirits,

ammonia or abrasives.

FAULTS AND THEIR LIKELY CAUSES

If a fault occurs, run through the points listed below before

taking your player for repair. Check whether:

- condensation has formed on the lens of the laser due to a

dramatic change in temperature; this will disappear
automatically after some time;

- the CD has been inserted correctly with the printed side up

and that there is a CD in the compartment;

- the CD is dirty, badly scratched or warped;
- the player has been connected to the PHONO socket of the

amplifier;

- the sound level of the CD player has been set at normal

level. See 'ADJUSTING THE SOUND LEVEL' to change the

setting.

If the fault remains, try to clear it by switching the player off

and on again.

If this also fails to help, consult your dealer.

TECHNICAL DATA

Typical Audio Performance

Frequency range:......................... ....................... 2 Hz - 20 kHz

Amplitude linearity:....................... .... 0,03 dB (20 Hz - 20 kHz)

Phase linearity:............................. ...........0.5° (20 Hz - 20 kHz)
Linearity on-90 dB:........................ ...................................... OdB
Dynamic range:............................. .................................... 97 dB

Signal-to-noise ratio:.................... ...........112 dB (A-weighted)
Channel separation:...................... ..................................105 dB

Total harmonic distortion:............. ..............................0 0018%

D/A conversion: Bitstream conversion (128 x oversampling,

1 bit, 3rd order noise shaper), in differential mode

Audio output level:........................

............................................ 2

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Impedance PHONES socket:....... ..................... 8 -1000 ohms

Power supply

Mains voltage and frequency: see the type plate on the rear

of the player

Power consumption:..................... ...................... 10 W approx

Safety requirements:.................... .................................lEC 65

Cabinet

Material/finish:....metal and polystyrene with decorative trim
Dimensions (w x h x d):................ ...........435

X

106

X

300 mm

Weight:.......................................... ........................ 4 kg approx.

Subject to modification

This Compact Disc player complies with radio interference

requirements as laid down in EC regulations.

Under no circumstances should you repair the player

yourself as this will invalidate the guarantee!

12

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