Pioneer PD-41 Service Manual page 30

PD-41,PD-9700
@ Symptom when out| Sound broken; some discs can be played but not others.
of adjustment
@ Measurement instru-| Connect the oscilloscope to TP 1, Pin| @ Player state Test mode, play
mentconnections 1 (RF).
[Settings] 20 mV /division @ Adjustment location | Pickup radial tilt adjustment screw
200 ns/division and tangential tilt adjustment screw
AC mode
YEDS-7
(Procedure|
spindle servo and put the player into play mode.
3. Next, adjust the tangential tilt adjustment screw with a Phillips screwdriver so that the eye pattern (the diamond
shape at the center of the RF signal) can be seen the most clearly (Figure §).
4. Adjust the radial tilt adjustment screw and the tangential tilt adjustment screw again so that the eye pattern can be
seen the most clearly. As necessary, adjust the two screws alternately so that the eye pattern can be seen the most
clearly.
Note: Radial and tangential mean the directions relative to the disc shown in Figure 4.
Radial
direction
Phillips
screwdriver
Radial direction
Tangential direction
Phillips
me 20) at Oo ZS screwdriver
db g
wh>
Tangential
Figure 4 direction
Adjustment locations
44