Measurements And Adjustments; Mechanical Adjustment - Panasonic NV-GS80E NV-GS80EB Service Manual

8 Measurements and Adjustments

8.1.

Mechanical Adjustment

8.1.1. ENVELOPE OUTPUT ADJUSTMENT
When replacing the Main Chassis Unit or the Cylinder Unit, be sure to perform the Envelope Output Adjustment as shown below.
1. Remove the Bottom Case Unit. (Refer to "Disassembly and Assembly Instructions")
2. Connect the oscilloscope to TP3922 (Envelope) and TP3921 (HID) on the Main P.C.B.
3. Play back the Color Bar Standard Tape (VFM3110EDS). "Envelope" and "HID" signal will be output.
4. Adjust the S1 post by turning the top of post with Post Height Adjustment Fixture (VFK1899) so that the left half of envelope
signal becomes as flat as possible.
5. Adjust the T1 post by turning the top of post with Post Height Adjustment Fixture (VFK1899) so that the right half of envelope
signal becomes as flat as possible.
Fig. E1-1
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