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.