Panasonic NV-HV61GN, Service Manual

Page: 134 / 159

29
Fig.M14
5-2-(6). FINE-ADJUSTMENT OF X-VALUE
Equipment Required:
Fine Adjustment Gear Driver (VFK0330)
(1) Connect the oscilloscope to the audio output and the
video output.
Both output signals should be fixed by the External trigger.
(2) Playback the Alignment Tape and set the tracking control
into center fix position.
(3) Adjust A/C Head position by the Fine Adjustment Gear
Driver (VFK0330) until the video envelope level is
maximized at the tracking center fix position.
NOTE:
During X-Value Fine Adjustment, in case the video envelope
level becomes 0, Pre-adjustment of X-Value should be
adjusted again due to it is possible to vary the X-Value
adjustment.