Adjustments - Pioneer PL-500X Service Manual

4. AD JUSTM E NTS
4 . 1 D . D M O T O R O P E R A T I O N A D J U S T M E N T
l. Rotate the tumtable platter.
2. Connect a dual-image oscilloscope (or synchro-
scope) to the TP3 and Q2 terminals of ttre cir-
cuit board ass'y.
3. Adjust VR1 (for 33-1/3 rpm) and VR2 (for
45rpm) on the circuit board ass'y in order to
bring the rising edge of the TPb terminal wave-
form within the width of the TP6 terminal
waveform as shown in Fig. 4-2.
F i q . 4 - 1
02 (tc=pA2oo4)
Fis. 4-2
,
a
TP3
1