Pioneer PD-S507 Manual de serviço - Página 34
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- 1. Table of Contents
- 2. Safety Information
- 3. Exploded Views and Parts List
- 4. Front Panel Section
- 5. Schematic Diagram
- 6. Pcb Connection Diagram
- 7. Pcb Parts List
- 8. Main Board Assy
- 9. Adjustment
- 10. General Information
- 10. Display
- 10. Block Diagram
- 11. Panel Facilities and Specifications
- 12. Specifications
PD-S507
11. Focus Best Adjustment
Adjust this point only if adjustment was made in item 10.
Test mode
=
SPDL servo
=
FOCUS servo
=
TRKG servo
Innermost
TEST DISC
circumference
(1 TRK)
PLAY
START
(CN201)
FE
RF
VC
MAIN BOARD ASSY
12. Tracking Servo Loop Gain Adjustment
Test mode
SPDL servo
FOCUS servo
TRKG servo
Innermost
TEST DISC
circumference
(1 TRK)
PLAY
START
TP1
(CN201)
2
TE
3
TI
4
VC
MAIN BOARD ASSY
34
CLOSE
CLOSE
CLOSE
MAIN BOARD ASSY
Player
TP1
6
1
4
=
CLOSE
=
CLOSE
=
CLOSE
MAIN BOARD ASSY
Player
VR156
Adjust the RF level to maximum, with
the focus error voltage within ±150mV.
Prove (10:1)
Prove (10:1)
UNDER
VR151
Prove (10:1)
Prove (10:1)
100kΩ
MAX
Oscilloscope
DC Mode
CH1: 5mV/div
CH2: 20mV/div
H: 200ns/div
UPPER
JUST
Lissajous Waveform
Oscilloscope
X-Y Mode
X: 20mV/div
Y: 10mV/div
Low-frequency
oscillator
1.2kHz
1Vp-p
GND