Adjustment - Pioneer PRS-X720 Service Manual

PRS-X720,X320,X220
QQ
3 7 63 1515 0
=====Circuit Symbol and No.===Part Name
--- ------ ------------------------------------------
C 460
C 501
C 502
C 551
C 552
C 553
C 554
C 555
C 556
C 557
C 558
C 559
C 560
C 561
C 562
C 563
C 564
C 565
C 566
C 567
C 568
C 569
C 570
C 651 220µF/10V
C 652
C 653
C 654
C 655
C 656 470µF/16V
C 657 470µF/16V
TE
L 13942296513
C 658
C 659 470µF/16V
C 660
C 661
C 662

6. ADJUSTMENT

IDLE CURRENT ADJUSTMENT
Conditions: Terminate inputs with 1kΩ resistors. No load connected to output. 14.4V DC power ON for 30 seconds then
adjust.
• PRS-X720/X1R/UC
Turn power on. Measure the voltage across resistor R586. After 30 seconds from turn on of amplifier, adjust VR552 so
voltage is 4.5mV ± 0.5mV.
Repeat this step with R585 and VR551.
• PRS-X320/X1R/UC
Turn power on. Measure the voltage across resistor R588. After 30 seconds from turn on of amplifier, adjust VR552 so
voltage is 4.5mV ± 0.5mV.
Repeat this step with R587 and VR551.
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• PRS-X220/X1R/UC
Turn power on. Measure the voltage across resistor R594. After 30 seconds from turn on of amplifier, adjust VR552 so
voltage is 4.5mV ± 0.5mV.
.
Repeat this step with R593 and VR551.
48
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Part No.
-------------------------
CEAS470M16
CEAS1R0M50
CEAS1R0M50
CEAS100M16
CEAS100M16
CKPUYB221K50
CKPUYB221K50
CEAS101M16
CEAS101M16
CFTLA103J50
CFTLA103J50
CCPUCH150J50
CCPUCH150J50
337RZM050M1020
337RZM050M1020
337RZM050M1020
337RZM050M1020
CMA330J2H
CMA330J2H
CFTNA333J50
CFTNA333J50
CQMA102J50
CQMA102J50
CCH1036
CFTLA103J50
CEAS100M16
CEAS100M16
CFTLA103J50
CCH1183
CCH1183
CEAS220M16
CCH1183
CFTLA105J50
CFTLA103J50
CFTLA103J50
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2 9
8
=====Circuit Symbol and No.===Part Name
--- ------ ------------------------------------------
C 851
C 852
C 853
C 854
C 855
C 856
C 857
C 858
C 859
C 860
C 861
C 862
C 863
C 864
C 865
C 901 3300µF/16V
C 902
C 903
C 904
C 905
C 906
C 907 3300µF/16V
C 908
C 909
C 912
C 913
C 914
C 915
C 920
C 927
Q Q
3 6 7 1 3 1 5
C 932
co
.
9 4 2 8
Part No.
-------------------------
CKSQYB471K50
CKSQYB471K50
CEAS100M16
CEAS100M16
CQMA472J50
CQMA472J50
CCSQCH470J50
CCSQCH470J50
CCSQCH470J50
CCSQCH470J50
CKSQYB471K50
CKSQYB471K50
CEAS4R7M35
CEAS4R7M35
CCSQCH470J50
CCH1211
CEAS221M10
CEAS2R2M50
CEAS101M16
CQMA472J50
CQMA472J50
CCH1211
478LBA035M2BD
478LBA035M2BD
CEAS470M16
CEAS470M16
CQMA102J50
CQMA102J50
CFTLA564J50
CQMA102J50
0 5 8 2 9 9 4 2 8
CEAS470M10
m
9 9
9 9