Table of Contents
Advertisement
7.2.2.3.
A/C HEAD HEIGHT ADJUSTMENT
The height of the A/C Head replacement part is preset at the
factory.
Purpose:
To be sure the tape runs properly along
the Control Head.
Symptom of
If the control signal is not properly picked
Misadjustment:
up, Servo Operation can not be achieved.
1. Connect the oscilloscope to Pin 25 (PB Control signal) on
the TP Adjustment P.C.B.
2. Play back the Alignment Tape (VFMW0001C)
3. Confirm that the Sub Control Signal is 500 mV±200 mV. If
not, slightly and equally adjust Screw A, Screw B, and
Screw C on the A/C Head Unit to achieve the sub control
signal level of 500 mV±200 mV.
(Sub Control Signal level will decrease when rotating
screws clockwise, and increase when rotating screws
counterclockwise.)
Fig. M4-1
Fig. M4-2
7.2.2.4.
A/C HEAD AZIMUTH
ADJUSTMENT
Purpose:
To adjust the position and height of the
A/C Head so that it meets the tape tracks
properly.
Symptom of
If the position of the A/C Head is not
Misadjustment:
properly adjusted, the Audio S/N Ratio
will be poor.
1. Connect the Audio/Video Cable on the camcorder.
2. Connect the oscilloscope to audio output jack.
3. Playback the Alignment Tape (VFMS0004H6C).
4. Adjust Screw C (Azimuth) on the A/C Head Unit so that the
output level is at maximum.
5. Confirm and readjust the A/C Head height.
6. Confirm and readjust Screw C (Azimuth) on the A/C head
so that the output audio becomes is maximum.
65
PV-D300 / VM-D100 / PV-L550 / PV-L600 / PV-L650 / VM-L450
Fig. M5
Hide quick links:
Advertisement
Table of Contents
