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JBL 5231 - Service Notes and Troubleshooting

JBL 5231
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Service Notes
The 5231 and 5232 utilize integrated circuitry. Proper opera-
tion can be verified by measurement of DC output voltages for
each integrated circuit which should measure 0, ±Vi VDC. If
this specification is not met, the integrated circuit is defective
and should be replaced.
DC voltages are measured with respect to ground. It should
be noted that a DC voltmeter having a high input impedance
(10 megohms or greater) is recommended.
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