3 adjustment 2, 1 cd-r vco control voltage adjustment, Pdr-04 – Pioneer PDR-04 User Manual
Page 57
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PDR-04
Out of adjustment
Optimum adjustment
Out of adjustment
Out of Optimum Out of
adjustment adjustment adjustment
Fig. 5 Eye pattern
Adiustment 1
6.2.8 Grating Re-adjustment
Adjustment 1
Adjust in the same manner as "4. Coarse Grating Adjustment ” in Adjustment 1.
6.3 Adjustment 2
6.3.1 CD-R VCO Control Voltage Adjustment
Adjustment 2
• Objective
• Symptom when out
of adjustment
To optimize the CD-R VCO control voltage adjustment of VCO 1C.
Player does not record or playback CD-R discs.
• Measurement instru
Connect the multimeter to
• Player state
Test mode, stop
ment connections
CN331 (TP30), Pin 1 (VCOIN)
(AUDIO DIGITAL BOARD assy)
• Adjustment
location
• Disc
VR301 (VCOIN)
(AUDIO DIGITAL BOARD assy)
None needed
[ Procedure ]
(1) Adjust VR301 (VCO CON) so that the voltage at Pin 1 (VCOIN) of CN331 (TP30) becomes 2.5 ± 0.1 V.
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