Pioneer PD-117 Service-Handbuch - Seite 21

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Pioneer PD-117 Service-Handbuch
PD-117
3. Tracking Error Balance 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
4. Pickup 1Radial 2Tangential Direction Tilt Adjustment
Test mode
SPDL servo
FOCUS servo
TRKG servo
TEST DISC
PLAY
Position where the screw is
visible through the adjustment
hole of the float base after
moving
toward
peripheral.
START
TP1
(CN201)
RF
VC
MOTHER BOARD ASSY
20
=
CLOSE
=
CLOSE
=
OPEN
MOTHER BOARD ASSY
Player
Low pass filter 1
1
=
CLOSE
=
CLOSE
=
CLOSE
TEST DISC
2
Remove lock tight
the
outer
1
4
VR155
Probe (10:1)
39kΩ
0.001µF
2
1
Player
Probe (10:1)
GND
A=B
A
VC
B
Oscilloscope
DC Mode
V: 10mV/div
H: 5mSec/div
NG
Eye pattern
OK (Smooth)
Oscilloscope
AC Mode
V: 20mV/div
H: 200nSec/div