Pioneer PD-F1005 Manuale di servizio - Pagina 35

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PD-F905
5. Focus Servo Loop Gain Adjustment
(J4-DAY-KW-TF
4 1B)
@ Test mode
FOCUS servo -
CLOSE
SPDL servo
-— CLOSE
TRKG servo
—
CLOSE
TEST DIS!
@
R=35mm
ane
vrR152
MAIN BOARD ASSY
Lissajous Waveform
Oscilloscope
———
X-Y Mode
CH1 CH2
X: 20mV/div
(X)
(Y)
Y: 5mV/div
ed
O@
Low-frequency
NLS
oscillator
Q
1.2kHz
z
1Vp-p
Probe(10:1)
Probe(10:1)
MAIN BOARD ASSY
6. Tracking Servo Loop Gain Adjustment
(RO YRLIY-KI-T4
4 VHB)
@ Test mode
FOCUS servo —
CLOSE
SPDL servo
-—* CLOSE
TRKG servo
-—® CLOSE
EST DISC
@
R=35mm
PLAY
Oscilloscope
X-Y Mode
CH1
CH2'
X: 5OmV/div
x
™)
Y: 20mV/div
2
GE
Low-frequency
oscillator
1.2kHz
2Vp-p
Probe(10:1)
9
| Probe(10:1)
MAIN BOARD ASSY
Low pass filter