Bose CD-20 - CD Tracking Ability

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TEST PROCEDURES
15. CD Tracking Ability
15.1 The test discs listed in the chart below
should be played with no audible defects.
15.2 If the unit fails any of these tests,
replace the CD mechanism assembly or
proceed to the Alignment procedures.
Disc Test Test Conditions
ABEX test disc TCD-725A Defect tracking (void), 1.0 mm Track 6, 6 sec.
ABEX test disc TCD-725A Defect tracking (black dot), .8 mm Track 9, 8 sec.
ABEX test disc TCD-725A Defect tracking (finger print), 65 µm Track 13, 10 sec.
ABEX test disc TCD-732R Defect tracking (warped disc), -1.0 mm First and last track, 6 sec.
ABEX test disc TCD-713R Defect tracking (eccentric disc), 210 µm First and last track, 6 sec.