The model and serial numbers are located on the bottom of the unit. Record the serial number in the space provided below. Refer to these numbers whenever you call upon your Sony dealer regarding this product. Model No. XR-1790 Serial No.
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You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. Welcome! Thank you for purchasing the Sony Cassette Car Stereo. This unit lets you enjoy a variety of features. Features General Built-in power amplifier (max.
Table of Contents Location of controls ... 4 Getting Started Setting the clock ... 5 Cassette Player Listening to a tape ... 6 Ejecting the cassette ... 6 Fast-winding the tape ... 6 Radio reception during fast-forwarding or rewinding of a tape —...
Getting Started Setting the clock The clock has a 12-hour digital indication. For example, setting it to 10:08 Display the time. DSPL (Press the button during unit operation.) DSPL Press the button for more than two seconds. The hour digit blinks. Set the hour digits.
Cassette Player Listening to a tape After inserting the cassette, playback will start automatically. To change the tape direction, press both the 0 and the ) buttons at the same time. Indication of tape transport direction The side facing up is being played. The side facing down is being played.
Radio Searching for stations automatically — Automatic tuning Select the desired band. A MEM TUNER FM1 n FM2 n AM n FM1 Press either side of the SEEK/MANU button momentarily to search for the next station (automatic tuning). SEEK MANU For lower For higher frequencies...
Memorizing only the desired stations Select the desired band. A MEM TUNER FM1 n FM2 n AM n FM1 Tune in the station which you wish to store on the preset number button. Press and hold the desired preset number button ( two seconds until you hear a beep tone.
Therefore, we recommend cleaning the tape head once a month or so with the separately available Sony Cassette Cleaning Set. If the sound does not improve after using a cleaning cassette, please consult your nearest Sony dealer.
If the fuse blows, check the power connection and replace the fuse. If the fuse blows again after replacement, there may be an internal malfunction. In such a case, consult your nearest Sony dealer. Fuse (10 A) Warning Never use a fuse with an amperage rating exceeding the one supplied with the unit as this could damage the unit.
Dismounting the unit Insert the supplied tool between the unit and the frame, and rotate 90° to release the hidden mounting spring. Repeat on the opposite side and remove the frame. 10 mm ( 90° Insert a flathead screwdriver between the bracket and mounting spring.
Specifications AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION 13 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 1% total harmonic distortion. Cassette player section Tape track Wow and flutter Frequency response...
Troubleshooting guide The following checklist will assist in the correction of most problems which you may encounter with your unit. Before going through the checklist below, refer to the connection and operating procedures. General Problem No sound Indications do not appear in the display window.