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. CDX-Mi2
«Purpose:
7
To adjust the tracking servo loop gain to an optimum
value.
¢ Maladjustment symptoms:
gain
«Measuring equipment / jigs:
Oscillator, gain adjustment filter(GGF-065),
oscilloscope, dual meter milli-voltmeter,
volume adjustment driver
* Measuring point:
TEX, TEY
* Test disc and setting:
VR356
Focus
X=0.5V/div.
Y=50mV/div.
Ims/div.
Waveform.14
Oscilloscope
Oscillator
1mS
/ div.
50mvV / div.
AC mode
14.4V
Dual meter
milli-voltmeter
Gain Adj.
Filter
Optimum
GGF-065
gain
REFOUT
Note : Leave the negative
side of the other oscilloscope
channel open.
Connect the negative millivoitmeter
lead to REFOUT, and do not connect
REFOUT to the power supply ground.
MAIN UNIT
Waveform.15
Adjustment Procedure
0+0.5dB.
Low-level
gain
Waveform. 16
22
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