Century L4-151 2.5L VIN R TBI (1985)
Tape Player: All Technical Service Bulletins
Audio - Cassette Reverses or Ejects Before The End
Bulletin
85-9-5
Date
Dec. '84
Ref. No.
85-076-9
SUBJECT:
CASSETTE TAPE DECK WITH SEARCH FEATURE OPERATION CHARACTERISTICS
MODELS AFFECTED: 1984 AND 1985 RIVIERA WITH DELCO BOSE SOUND SYSTEM 1985 ELECTRA WITH DELCO BOSE SOUND SYSTE
When using a 90 minute or low quality cassette, some owners may experience tape direction reversal or ejection before the end of the cassette. This is
due to the tape sensing system built into the cassette deck.
To determine if the tape deck is functioning properly, test unit with the delivery tape or Delco Bose tape if so equipped. To test unit operation:
1.
Verify that these tapes can be completely forwarded and rewound without reversal or ejection.
2.
Verify that the last three minutes of each tape end can be played entirely and that when finished, the tape reverses direction.
3.
Verify that the stalled tape eject feature is functional. To test this feature, completely rewind the cassette and let the tape deck automatically
reverse the tape direction. After the tape direction is reversed, depress the rewind button; when rewind button pops out to its normal position,
depress it again immediately. Cycle the rewind button in this manner up to six times. By the sixth time, the cassette deck should automatically
disengage the tape and eject the cassette. This is a feature of this cassette deck which prevents damage from occurring to the unit and/or tape.
If the cassette deck passes all these tests, its mechanical operation is functioning correctly and should not be removed.
A tape which will not fully rewind or reverses before the end of the side may be improved by eliminating any stacking affects in the tape. To do this, tap
the cassette on a hard level surface several times or until the top edges of the tape are all level. There are no adjustments on the cassette unit which will
improve the performance of this type of tape.
