Boss Audio BV9557 User Manual in English - Page 4

INSTRUCTIONS BASIC FUNCTION 1. PWR Button Short press this button to power on, long press this button to power off. In normal situation, press PWR button can return to the main menu. 2. MUTE Button Press this button to shut off the sound output, re-press this button can resume the sound output, long press this button can turn off the TFT LCD display. 3. DBAS Button Press this button to bass on/off. 4. VOL- Button Press this button to reduce the volume. 5. VOL+ Button Press this button to increase the volume. 6. Eject Button Press this button can eject the disc. 7. RESET Button Press this button and this unit will be restored to the initial state. 8. Dual (front and rear) USB Warning: You can only use either front or rear USB at a time. Never connect both front and rear USB at the same time! This could cause malfunctions. 9. Remote control receiver It is able of receiving infrared signals launched by the remote control matching the unit. 10. Dual (front and rear) AUX Warning: You can only use either front or rear AUX at a time. Never connect both front and rear AUX at the same time! INSTRUCTIONS TROUBLE SHOOTING PROBLEM CAUSE Cannot power on Check fuse Some factors cause MPU wrong operation After ignition switch off ,setting Change battery or fuse information all lose Poor performance Weak signal of radio station SOLUTION Change fuse same as the old one Press RES button on the panel by penpoint, then, power on Reset information and save Move the car to another place, then research Connot load disk There is a disk inside Remove disc before inserting another one Disc is scratched Change new disc Cannot play disc Put wrong side of disc into the unit Lens is dirty Insert in the disk with sign side up Clean lens by lens clean disc Cannot switch language/subtitle No image There is only one language/ subtitle in disc Other factors cause MPU wrong operation If disc is not with multi-language/subtitle, it cannot switch language/subtitle Press [RES] button on the panel by penpoint, then, power on Cannot watch image during driving It's not allowed to watch image during driving Park the car in a safe place, put the car stall in " P " postion, pull up the hand brake, parking brake wire must be grounded 03 16