Rf Pll Free-Run Frequency Check; Balance Level Adjustment - Sony CDP-D500 Service Manual

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6. Check the level B of the oscilloscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following:
A/B × 100 = less than ± 6 (%)
Traverse waveform
0V
7. Press the "8" button. (The tracking servo and sledding servo are
turned ON.) Confirm the C (DC voltage) is almost equal to the
A (DC voltage) is step 6.
Traverse waveform
0V
8. Disconnect the lead wire of TP (ADJ) connected in step 1.
Center of the waveform
B
A (DC voltage)
+1.5
level : 1.5
–0.5
Tracking servo Tracking servo
Sledding servo Sledding servo
OFF ON
Also made in Heiloo, Holland.

RF PLL Free-run Frequency Check

Procedure:
1. Connect frequency counter to test point (XPLCK) with a lead
wire.
2. Turned Power switch on.
3. Put the disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218 MHz.
Vp-p

Balance Level Adjustment

(Generally it does not need to adjust because it has alredy adjusted
before shipping.)
1. Turn on the disc (YEDS-18) and play the number 2 track (1 kHz
0 dBs)
2. Connect level meter to BALANCE OUT (J304)
3. Adjustment level
BALANCE OUT: +24 dBs
RV101 (L-CH)
RV201 (R-CH)
C (DC
voltage)
– 17 –
frequency counter
MAIN board
+
–
TP (XPLCK)
6/8/15