Cleaning The Tape Drive; Technical Data - Grundig RR 640 CD User Manual

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INFORMATION

Cleaning the tape drive

To guarantee good recording and playback quality, clean the parts shown
(1, 2, 3) after every 50 hours of use, or once a month.
Open the tape compartment and moisten a cotton swab with alcohol or a
special head-cleaning fluid. Begin playback and clean the capstan idler (3).
Then pause playback and clean the capstan (2) and the magnetic heads (1).
Close the tape compartment. To clean the magnetic heads (1), you can also
play a cleaning tape.
Protect your cassettes from humidity, dust, heat and cold.
Do not store your tapes near devices with strong magnetic fields such as
television sets or stereo speakers.
After using a cassette, put it back in its protective case.

Technical data

This device is noise-suppressed according to the applicable EC directives.
This product fulfils the European directives 89/336/EEC, 73/23/EEC and
93/68/EEC.
This device conforms to the safety regulation DIN EN 60065 (VDE 0860)
and therefore the international safety regulation IEC 60065.
Never open the device casing. The manufacturer accepts no liability for
damage resulting from improper handling.
The type plate is located at the bottom of the device.
Voltage supply
Mains operation: ......... 230 V, 50/60Hz
Battery operation: ................... 8 x 1.5 V
Remote control:
Micro type, e.g. AAA (RR 670 only),
LR 03, 2 x 1.5 V
Output
DIN 45324, 10% THD
Music signal power: ........ 2 x 4500 mW
Sine wave power: ............ 2 x 2500 mW
Stereo headphone jack 3.5 mm ø
Radio
frequency bands
FM 87.5 ...108.0 MHz
MW 526.5 ... 1606.5 kHz
LW 148.5 ... 283.5 kHz
Technical and optical modifications reserved!
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CD unit
Frequency response: .... 20 Hz ... 20 kHz
Noise
voltage ratio: ............................ ≥ 65 dB
(R20, UM1)
Tape unit
Sound recording
medium: ..................... Compact cassette
Track position: International quarter-track
Tape speed: ...................... 4.76 cm/sec.
Motor: ................................... DC motor
Frequency range: ........ 125 Hz ... 8 kHz
Noise
voltage ratio: ............................ ≥ 42 dB
Band speed
fluctuation: ............................. ≤ 0.35 %
Dimensions and weight
W x H x D ........... 426 x 188 x 253 mm
Weight ...................................... 3.8 kg
according to DIN 45516