Pioneer XV-HA5 Service Manual page 65

5
DVD Error Rate Adjustment
2
Notes:
• Use disc: GGV1025
START
• Play the DVD test disc
at inner track
• Display ERROR RATE
on the monitor
ESC CHP/TIM
C
1E-3
BER
A
5E-4
Anticlock wise
Rotation of Radial screw
and Tangential screw
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
the Screw tight.
OK
Screw tight: GYL1001
Disc playback normally.
• The measurement of
block error rate
ESC
5
6
Traverse Mechanism
Assy-S
Adjust the radial adjustment
screw so that
ERROR RATE becomes
around "5E-4".
ERROR RATE : "5E-4"
B
A
Best point
Clock wise
ERROR RATE: - - - -
Player
CHECK
In this check, the error rate
that is less than "5E-5"is
better.
CHP/TIM
Service mode end
XV-HA5
6
7
• Play the DVD test disc
A
• Unfasten the radial adjustment screw
by 90 degrees step till ERROR RATE
becomes around "1E-3" again .
• Record the number of rotation (N1).
(memorizing how much the screw was rotated.)
• Fasten the radial adjustment screw
till the number of rotation becomes
harf of N1.
ESC
Service mode end
• Play the DVD test disc
Monitor
at outer track
(around #200000)
• Unfasten the tangential screw
by 90 degrees step till ERROR RATE
becomes around "1E-3" again .
• Record the number of rotation (N1).
ESC
• Fasten the tangential adjustment screw
till the number of rotation becomes
harf of N1.
7
8
at inner track
(around #30000)
Traverse Mechanism
Assy-S
Fasten the radial
adjustment screw so that
ERROR RATE becomes
around "1E-3".
B
ERROR RATE : "1E-3"
Best Radial point
\ Service mode
ESC CHP/TIM
Traverse Mechanism
Assy-S
Fasten the tangential
adjustment screw so that
ERROR RATE becomes
around "1E-3".
B
ERROR RATE : "1E-3"
Best tangential point
8
A
B
C
C
D
E
C
F
65