Boss Audio 742RGB User Manual - Page 4

2) AF [ALTERNATIVE FREQUENCIES] When AF switching mode is selected and the state of AF switching mode is displayed by AF segment in display. Segment off: AF switching mode off. Segment on: AF switching mode on, and has RDS information. Segment flashing: AF switching mode on, but RDS information is not received yet. When AF switching mode is selected, the radio checks the signal strength of AF all the time. The interval of checking time of each AFs depends on the signal strength of current station, from a few minute for strong station to a few seconds for weak station. Every time that new AF is stronger than current station, it switches over to that frequency for very short time, and NEW FREQUENCY is displayed for 1-2 seconds. Because the mute time of AF switching or checking time is very short, it is almost inaudible in case of normal program. During FM mode, when AF is on, SEEK, (SCAN), AUTO-MEMORY function can only receive and save RDS program. 3) TA SEEK/TA ALARM: TA SEEK mode: when newly tuned station does not receive TP information for 5 seconds, the radio retunes to next station which has a different PI to the last station, but has the TP information. When TP information gets lost at the current station for retune time which is set by RETUNE SHORT(60 seconds) or RETUNE LONG(90 seconds), the radio starts to retune to next same PI station. When same PI station does not receive in 1 cyclic search, the radio retunes to next station with TP information. TA ALARM mode: when this mode is selected, any automatic retune mode is not activated. Only double beep sound(ALARM) will be heard. When newly tuned station does not have TP information for 5 seconds, beeps are sounded. When TP information gets lost at the current station for retune time, the beep sound will be heard. When newly tuned station has no RDS signal, PI SEEK is suppressed . 4) PI SOUND/ PI MUTE: PI SOUND mode: if a car cruises between buildings that could cause reflecting signals, a phenomenon may occur, due to different PI codes being received from the same AF source. when different PI sounds (DIP) are heard occassionally, this will happen for less than 1 second. PI MUTE mode: under above same situation, a mute sound will be heard for less than1second. 5) RETUNE L / RETUNE S: The initial time of automatic TA search or PI SEARCH mode is selected. When PI information is not received for retune interval , the radio starts to retune to next same PI station. When same PI station does not receive 1 cyclic search, the radio goes to last station and waits for 4-5 minutes until PI code is received. RETUNE L mode: selected as 90 seconds. RETUNE S mode: selected as 60 seconds. Page 3 TROUBLESHOOTING Before using the check list please make all the connections first. If you still have questions after going through the checklist, please consult your local customer service representative. Common Symptoms Cause Solution There is no power. The CDs cannot be loaded. The car ignition is switched off. If the power supply is properly connected to the car accessory, switch the ignition key to " ON " or " ACC " . The fuse has blown. Replace another fuse according to the wiring diagram. Presence of CD disc inside the player Remove the disc in the player then put a new upward The CDs are loaded The transport screws have not been Remove the transport screws before using. only halfway into removed. the CD tray. The device does not work correctly (EJECT, LOAD, PLAY) Inserting the disc in upside down Insert the compact disc with the label facing upward The surface of CD is extremely dirty Clean the CD or try another CD, if this works or it is damaged. correctly, the first CD is properly damaged. Temperature inside the car is too high. Cool off until the ambient temperature returns to normal There is no sound. The volume control is set too low. The device has not been correctly connected. Turn up the volume properly. Check the power and earth connection according to the wiring diagram. The operation keys do not work 1.The built-in microcomputer is not operating properly due to noise 2.Front panel is not properly fix into its place 1. Switch the device off and on again. Or press the RESET button to resume the program. 2. Reinstall the front panel The sound of the CD player skips The installation angle is more than 30 degrees The surface of the road is uneven. Adjust the installation angle to less than 30 degrees Wait until the road becomes smoother before playing the CD. The surface of CD is extremely dirty Clean the CD or try another CD, if this works or it is damaged. correctly, the first CD is properly damaged. No radio reception. The antenna cable is not connected. Insert the antenna cable firmly into the antenna socket of the device. In automatic search The transmission signals are too mode the radio does weak. not stop at a transmitting station. Tune in to a radio station manually. Page 10