User manual SONY CDX-4160

[. . . ] Never leave it on the dashboard of a car parked in direct sunlight where there may be a considerable rise in temperature. If you turn the ignition key switch to the OFF position without removing the front panel, the caution alarm will be activated and a beep tone will be heard for a few seconds (only for cars with an accessory position on the ignition key switch). If you connect an optional power amplifier and do not use the built-in amplifier, the beep tone will be disabled. You can detach the front panel of this unit to prevent the unit from being stolen. [. . . ] Press the number button ((1) to (6)) momentarily where the desired station is stored. Press either side of (SEEK/AMS) momentarily to search for the station (automatic tuning). Scanning stops when the unit receives a station. Press either side of (SEEK/AMS) repeatedly until the desired station is received. Note If the automatic tuning stops too frequently, press (SENS) momentarily until "LCL" appears in the display (local seek mode). Only the stations with relatively strong signals will be tuned in. Each source can store the bass and treble level independently. To obtain the beep tone again, press these buttons again. Note If you connect an optional power amplifier and do not use the built-in amplifier, the beep tone will be disabled. Adjust within three seconds after selecting the item. (After three seconds, the buttons work as volume control buttons. Only for cars with an accessory position on the ignition key switch To turn the Power Select Function ON You can enjoy clear and powerful bass sound. The D-bass function boosts the low frequency signal with a sharper curve than conventional bass boost. You can hear the bass line more clearly even if the vocal sound is the same volume. You can emphasize and adjust the bass sound easily with the D-bass control. This effect is similar to the one you get when you use an optional subwoofer system. Moreover, the Digital D-bass* function creates even sharper and more powerful bass sound than Analog D-bass. The Power Select Function ties the clock display power to the accessory position on the ignition key switch. To avoid battery wear, the clock is not displayed while the unit is initializing. Note You cannot operate this function with the optional rotary remote (RM-X2S). If your car was parked in direct sunlight resulting in a considerable rise in temperature inside the car, allow the unit to cool off before operating it. ⷠIf no power is being supplied to the unit, check the connections first. [. . . ] Before going through the checklist below, check the connection and operating procedures. Indications do not appear in the Remove the front panel and clean the connectors. An optional power amplifier is connected and you are not using the built-in amplifier. The unit is installed at an angle of more than 20°. [. . . ]