Sony HCD-551 Operating Instructions - Page 31

Troubleshooting Before going through the check list below, first refer back to the connection and operating procedures. Should any problem persist' after you have made these checks, consult your nearest Sony dealer. Tuner Operation STEREO indicator blinks. Severe hum or noise. • A very weak FM station or a noisy FM program is received. Adjust the antenna or connect an external FM antenna. • The signal strength is too weak. ---. Aajust the antenna, connect an external antenna or connect the ground wire. Cassette Deck Operation The • button does not activate. Function buttons do not activate. Recording or playback cannot be made, or there is decrease in sound level. Excessive wow, flutter or dropout. Incomplete erasure. Unbalanced tone in high frequencies. • No tape in the cassette compartment. • The tab has been removed from the tape. (See page 19.) ---. Cover the opening with plastic tape. • Cassette compartment is not fully closed. • Recording/playback and erase heads are either dirty or magnetized. ---* Clean or demagnetize the heads. (See page 29.) • Capstan or pinch roller is dirty. (See page 29.) • Erase head is dirty. (See page 29.) • Improper setting of DOLBY NR. --. When playing back, set the switch to the same position used in recording. Compact Disc Operation Remote commander does not operate the unit. Any operation is not possible. • No disc in the CD section. • The unit is in the pause mode. -. Press I> or II to release pause. • Moisture condensation. --. Leave the unit turned on for about an hour. • The disc is set upside down. -. Set the disc with the label side up. • The disc is tilted. -o Set the disc correctly. • The disc is extremely dirty. • The internal control program may not run. ---• Turn off the power and turn it on again. 31