Pioneer PD-M407 Manuel d'entretien - Page 23

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Pioneer PD-M407 Manuel d'entretien
6.2.3 Check and Adjustment
1. Focus Offset Adjustment
Test mode
None disc
START
TP1
(CN201)
6
FE
4
VC
MOTHER BOARD ASSY
2. Grating Adjustment
Test mode
=
SPDL servo
=
FOCUS servo
=
TRKG servo
Innermost
TEST DISC
circumference
(1 TRK)
PLAY
START
TP1
(CN201)
2
TE
4
VC
MOTHER BOARD ASSY
MOTHER BOARD ASSY
Player
Turn counterclockwise
from null.
CLOSE
CLOSE
OPEN
Player
Low pass filter 1
DC voltage
VR154
0±50mV
Prove (10:1)
GND
Locate null.
Counterclockwise, Maximum amplitude.
PICKUP
Prove (10:1)
39kΩ
0.001µF
PD-M427, PD-M407
Oscilloscope
DC Mode
V: 5mV/div
H: 10mSec/div
Oscilloscope
DC Mode
V: 10mV/div
H: 5mSec/div
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