Pioneer PD-Z84M Service Manual page 31

PD-Z84M, PD-2970M
Regular screwdriver
Adjustment Locations
[How to find the null point]
the same track. (See Figure 3.)
This point is called the null point. When adjusting the grating, this null point is found and used as the reference
position.
e@ e
le @ |
g & & & & & & & &
Wave form of TP1, Pin? iwi li he WVW li) i Wy al
t
Null
Grating adjustment position point
Null point wave form Maximum amplitude Wave form other than
wave form the null point