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There are two adjustment methods: one in which adjustment is performed monitoring RF waveform with an oscilloscopes
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(method 1), and another in which adjustment is performed checking the numerical value of RF level with OSD (method 2).
Adjustment procedures are described below, but please refer to the section of service mode for how to start the test
mode and the operation procedures therein.
Replacement of PU Unit
For replacement of PU unit, refer to "Disassembly - How to Remove PU Unit."
After mounting PU unit, roughly adjust the skew screw so that the outer periphery without PU becomes horizontal
to CRG chassis.
Adjustment Procedure:
1. Connect to the jigs (refer to jig connection diagram) to enable the adjustment of pickup, and turn over DVD
mechanism module.
To prevent the disc from being scratched as it is turned over, first place a coin having the thickness of about
1.5 mm on the desk, and turn over and set so that the part "
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2. In case of method 1:
Referring to the connection diagram, connect an oscilloscope so that RF signal can be monitored using AGND2 as
the reference.
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In case of method 2:
There is no need for setting equipment. Please go on to step 3.
.
3. Turn on the power in the test mode, and load the adjustment disc (GGV1025).
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Skew adjustment screw
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Oscilloscope
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