Sony CFD-460 - Page 12

CFD-460
5. Connect oscilloscope to TP (TE).
6. Adjust RV704 so that the waveform is as shown in the
figure below. (Tracking gain adjustment)
VOLT/DIV: 1V
TIME/DIV : 2ms
* OV
@ Incorrect Examples (fundamental wave appears)
low tracking gain
VOLT/DIV: 1V
TIME /DIV : 2ms
high tracking gain
(higher fundamental wave than for low gain)
VOLT/DIV: 1V
TIME /DIV : 2ms
OV
TP (FOK)
*
Remove the solder ‘bridge
while adjustment of focus
gain. : TP (TE)
(After adjustment make the
solder bridge)
Adjustment Location :
CD MAIN BOARD
—Component side—
RV703: VCO
[|
2)
RV704:
TRACKING GAIN
RV705:
FOCUS GAIN
RV702: FOCUS BIAS RV701: TRAVERSE
CD MAIN BOARD
* Note : When a frequency response
analyzer is used :
Remove the solder bridge
while adjustment of tracking
gain.
(After adjustment make the
solder bridge)