Panasonic NV-HV61GN, Руководство по обслуживанию

Страница: 111 / 159

6
1-4. NEW DD CYLINDER UNIT
Three phases sensor-less RDD system instead of Matsushita original GLDD/UDD system is adopted for standardization.
l
NOTE:
Replacing only Upper Cylinder unit of RDD cannot be performed, as securing of RT gap is impossible in a place
other than factory, replace the cylinder as a whole RDD Cylinder Unit. The PG Shifter Adjustment shown in item
1-3 should be performed after replacement of the DD Cylinder.
FEATURE
1. The RDD corresponds to 2 ~ 10 Heads.
2. Thickness of Upper Cylinder and Lower Cylinder becomes thin.
3. Adoption of standard parts in the VTR world.
4. Miniaturization of the Rotary Transformer.
Rotary Transformer of UDD Rotary Transformer of RDD
Inner Diameter
φ
18.5
φ
8.3
Outer Diameter
φ
47.6
φ
32.3
Thinness t=2.70 t=1.85
Total Parts Pieces of the Motor 62 56
(*Rotary Transformer which is corresponding to 6 Heads)
Fig.M3
Rotary Transformer
NEW GLDD
UDD
RDD
Drive System: 3 Phases Full Wave Sensor-less
Rotary Transformer
Drive System: 3Phase Half Wave P Signal-less