Panasonic DVD-KA84GA, Service Manual

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9 SELF-DIAGNOSIS FUNCTION AND SERVICE MODE
9.1. Optical Pickup Breakdown Diagnosis
As a new feature, this unit has an “optical pick-up problem diagnosis function” and “a tilt adjustment confirmation function” built
in. Use the following procedure to efficiently determine the problem and adjust tilt. If "NO DISC" is displayed, before exchanging
the optical pick-up, carry out problem diagnosis first. If the present laser driving current is over 68, the optical pick-up may need
to be exchanged.
Note:
Carry out diagnosis within 3 minutes of turning the unit on. (The player’s current can increase as it warms up, so turn the unit
off and allow it to cool down before diagnosis.)
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DVD-KA84GA / DVD-KA84PU