Technics SL-PC25

SL-PC25
MECHANICAL ADJUSTMENT
1. Connect the oscilloscope’s CH. 1 probe across
(+) and (—) on the Servo P.C.B.
Oscilloscope setting: VOLT.......... 100 mV
Input coupling...
2. Switch the player power ON, and play track 9 on the
test disc (SZZP1056C). (Playing any other track may
yield a false adjustment.)
3. Leave the player in Play mode, and place it as shown
in the figure on the right.
4. Alternately adjust the two mechanical adjusting Ue hameat -adivstiment
screws with the 2.0mm allen wrench (SZZP1101C)
until the vertical fluctuation of RF signal is
minimized and the eye pattern is most stretched.
5. After completing the adjustment, lock the mechanical
adjustments with lock paint (RZZOLO1).
Allen
wrench
Range adjustable
with a allen
wrench.
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% Most stretched eye pattern.
(3) BEST EYE (PD BALANCE) ADJUSTMENT
1. Connect the oscilloscope’s CH. 1 probe across BUMRIth)
(+) and Bueteyy (—) on the Servo P.C.B.
Oscilloscope setting: VOLT.......... 100 mV
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OS
Input coupling... AC
2. Switch the player power ON, and play the 1kHz
(track 1) on the test disc (SZZP1054C).
3. Adjust VR101 until the vertical fluctuation of RF
signal is minimized and the eye pattern is most
stretched.
* Most stretched eye pattern.
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