Pioneer PD-F1007 Service Manual - Page 43

Focus Best Adjustment, Tracking Servo Loop Gain Adjustment

Get Pioneer PD-F1007 PDF manuals and user guides View all Pioneer PD-F1007 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 43 highlights

PD-F1007 12. Focus Best Adjustment Adjust this point only if adjustment was made in item 10. Test mode SPDL servo = CLOSE FOCUS servo = CLOSE TRKG servo = CLOSE TEST DISC Innermost circumference PLAY (1 TRK) VR156 MAIN BOARD ASSY START TP1 (CN201) FE 6 RF 1 VC 4 MAIN BOARD ASSY Player GND GND MAX Adjust the RF level to maximum, with the focus error voltage within ±150mV. Prove (10:1) Prove (10:1) Oscilloscope DC Mode CH1: 5mV/div CH2: 20mV/div H: 200ns/div 13. Tracking Servo Loop Gain Adjustment Test mode SPDL servo = CLOSE FOCUS servo = CLOSE TRKG servo = CLOSE TEST DISC Innermost circumference PLAY (1 TRK) VR151 MAIN BOARD ASSY UNDER UPPER JUST Lissajous Waveform Oscilloscope X-Y Mode X: 20mV/div Y: 10mV/div START TP1 (CN201) TE 2 TI 3 VC 4 MAIN BOARD ASSY Player 100kΩ GND GND Prove (10:1) Prove (10:1) Low-frequency oscillator 1.2kHz 1Vp-p GND 43

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
PD-F1007
43
12. Focus Best Adjustment
Oscilloscope
DC Mode
CH1: 5mV/div
CH2: 20mV/div
H: 200ns/div
Prove (10:1)
Player
START
TP1
(CN201)
RF
VC
MAX
GND
Prove (10:1)
FE
6
1
4
GND
Adjust the RF level to maximum, with
the focus error voltage within
±
150mV.
Adjust this point only if adjustment was made in item 10.
MAIN BOARD ASSY
VR156
MAIN BOARD ASSY
Test mode
SPDL servo
FOCUS servo
TRKG servo
=
=
=
CLOSE
CLOSE
CLOSE
TEST DISC
PLAY
Innermost
circumference
(1 TRK)
13. Tracking Servo Loop Gain Adjustment
UNDER
Oscilloscope
X-Y Mode
X: 20mV/div
Y: 10mV/div
GND
Prove (10:1)
Player
START
TP1
(CN201)
TI
VC
UPPER
JUST
Low-frequency
oscillator
1.2kHz
1Vp-p
GND
GND
Prove (10:1)
100k
Ω
TE
2
3
4
Lissajous Waveform
MAIN BOARD ASSY
Test mode
SPDL servo
FOCUS servo
TRKG servo
=
=
=
CLOSE
CLOSE
CLOSE
TEST DISC
PLAY
Innermost
circumference
(1 TRK)
VR151
MAIN BOARD ASSY