Pioneer PD-S507 Manuale di servizio - Pagina 33
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Anche per Pioneer PD-S507: Manuale di servizio (9 pagine)
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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
9. Focus Best Adjustment
Test mode
=
SPDL servo
CLOSE
=
FOCUS servo
CLOSE
=
TRKG servo
CLOSE
Innermost
TEST DISC
circumference
(1 TRK)
PLAY
START
TP1
(CN201)
6
FE
1
RF
4
VC
MAIN BOARD ASSY
10. Focus Servo Loop Gain Adjustment
Test mode
=
SPDL servo
CLOSE
=
FOCUS servo
CLOSE
=
TRKG servo
CLOSE
Innermost
TEST DISC
circumference
(1 TRK)
PLAY
START
TP1
(CN201)
6
FE
5
FI
4
VC
MAIN BOARD ASSY
VR156
MAIN BOARD ASSY
Player
VR152
MAIN BOARD ASSY
Readjust if
adjustment
is incorrect.
Player
56kΩ
100kΩ
0.001µF
Low pass filter 2
Adjust the RF level to maximum, with
the focus error voltage within ±150mV.
Oscilloscope
DC Mode
CH1: 5mV/div
CH2: 20mV/div
H: 200ns/div
Prove (10:1)
Prove (10:1)
Check
UNDER
UPPER
JUST
Lissajous Waveform
Oscilloscope
X-Y Mode
X: 20mV/div
Y: 5mV/div
Low-frequency
Prove (10:1)
oscillator
1.2kHz
1Vp-p
Prove (10:1)
GND
PD-S507
MAX
33