Pioneer CDJ-100S Panduan Servis - Halaman 38

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Halaman Cetak
Pioneer CDJ-100S Panduan Servis
CDJ-100S

5. Focus Servo Loop Gain Adjustment

Test mode
FOCUS servo
SPDL servo
TRKG servo
WAH Key - ON
TEST DISC
PLAY
Disc: Center circumference
START
TP1
(CN201)
6
FOER
5
FOIN
4
VC
MOTHER BOARD ASSY

6. Tracking Servo Loop Gain Adjustment

Test mode
FOCUS servo
SPDL servo
TRKG servo
WAH Key - ON
TEST DISC
PLAY
Disc: Center circumference
START
TP1
(CN201)
2
TRER
3
TRIN
4
VC
MOTHER BOARD ASSY
38
=
CLOSE
=
CLOSE
=
CLOSE
MOTHER BOARD ASSY
Player
100kΩ
0.0018µF
Low pass filter 2
=
CLOSE
=
CLOSE
=
CLOSE
MOTHER BOARD ASSY
Player
100kΩ
Low pass filter 1
UNDER
VR101
Probe (10:1)
Probe (10:1)
39kΩ
UNDER
VR102
Probe (10:1)
Probe (10:1)
39kΩ
0.001µF
6.2.4 Check and Adjustment
UPPER
JUST
Lissajous Waveform
Oscilloscope
X-Y Mode
X: 20mV/div
Y: 5mV/div
Low-frequency
oscillator
1.2kHz
1Vp-p
GND
UPPER
JUST
Lissajous Waveform
Oscilloscope
X-Y Mode
X: 50mV/div
Y: 5mV/div
Low-frequency
oscillator
1.4kHz
2Vp-p
GND