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PD~- S605, PD- S505, PD- S505-G
5. Focus Servo Loop Gain Adjustment
(Ft -DAY-KW-TF4
VRB)
© Test mode
FOCUS servo
-» CLOSE
SPDL servo
— CLOSE
TRKG servo
-* CLOSE
TEST,DISC
R=35mm
cs) VR 1 52
MAIN PCB ASSY
Oscilloscope
X-Y Mode
X : 20mV/div
o
Low-frequency
.
;
oscillator
Y : 5mV/div
1.2kHz
1Vp-p
Probe(10:1)
MAIN PCB ASSY
6. Tracking Servo Loop Gain Adjustment
(hIyvHLIY—-KI-TF4
VRB)
® Test mode
FOCUS servo
-> CLOSE
SPDLservo
-—-+CLOSE
TRKG servo
-» CLOSE
TEST,PISC
nace
VR151
MAIN PCB ASSY
PLAY
Oscilloscope
X-Y Mode
%
™—
Low frequency
X: 50mV/div
O
oscillator
Y : 20mV/div
1.2kHz
2Vp-p
Probe(10:1)
MAIN PCB ASSY
Low pass filter
35
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