Sony PS-LX120D Service Manual page 5

PS-LX100/LX285
SECTION 1
ADJUSTMENTS
Speed Adjustment
Note: Be sure to perform 33-rpm adjustment before 45-rpm.
— Using a stroboscope board — — Using a test record —
1. Puta stroboscope board on the mat. 1. Puta test record (YFSC-16) on the mat.
2. Set the SPEED switch to 33. 2. Move the arm onto a-2 (3kHz) section and trace it.
Depress the lifter knob to make a lift-up mode and move the arm 3. Adjust M101(L) so that the frequency is 2,991 —3,009 Hz.
above to the outer most groove of a record. 4. Set the SPEED switch to 45.
Adjust M101(L) so that the striped pattern of stroboscope Adjust M101(H) so that the frequency is 4,038 —4,062 Hz.
board is stationary.
3. Set the SPEED switch to 45.
Adjust M101(H) in the same way.
Adjustment Location:
SPEED ADJUST
"—
7
'HO 451m
! I
\ LO 33mm
Noe
go>
'HO 45m
! 1
LO 33 rom
~ oe"
Automatic Return Position Adjustment
. Puta test record (YFSC-16) on the mat.
. Set the SPEED switch to 33 and move the tonearm on a return
check groove.
. Turn the Adjustment screw so that the tonearm starts to return '
at count of 4 — 10 count increase count decrease
adjustment screw