PIONEER XV-DV161/WLXJ
Service Manual

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A

2 DVD Error Rate Adjustment
Notes: · Use disc: GGV1025

· Play the DVD test disc at inner track (around #30000)

START

· Play the DVD test disc at inner track · Display ERROR RATE on the monitor
B

ESC CHP/TIM

G N

Traverse Mechanism Assy-S Adjust the radial adjustment screw so that ERROR RATE becomes around "5E-4". A ERROR RATE : "5E-4"

Traverse Mechanism Assy-S Fasten the radial adjustment screw so that ERROR RATE becomes around "1E-3". B ERROR RATE : "1E-3"

1E-3
ERROR RATE

C A A

B

5E-4

· Unfasten the radial adjustment screw by 90 degrees step till ERROR RATE becomes around "1E-3" again . C · Record the number of rotation (N1).
(memorizing how much the screw was rotated.)

Best point
C

Anticlock wise Clock wise Rotation of Radial screw and Tangential screw

· Fasten the radial adjustment screw till the number of rotation becomes harf of N1. Best Radial point

ERROR RATE: - - - -

ESC

Player Monitor
D

Service mode end

· Play the DVD test disc at outer track (around #200000) Service mode
ESC CHP/TIM

Turn the POWER OFF in case of NG once, and perform the adjustment once again.

If error rate is OK, locks a root of tangential and radial adjustment screws with
E

CHECK
OK
In this check, the error rate that is less than "5E-5"is better.

the Screw tight. Screw tight: GYL1001

Traverse Mechanism Assy-S Fasten the tangential adjustment screw so that ERROR RATE becomes around "1E-3". B ERROR RATE : "1E-3"

Disc playback normally. · The measurement of block error rate

ESC CHP/TIM
F

ESC

· Unfasten the tangential screw by 90 degrees step till ERROR RATE becomes around "1E-3" again . C · Record the number of rotation (N1).

Service mode end

· Fasten the tangential adjustment screw till the number of rotation becomes half of N1. Best tangential point

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XV-DV370
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