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Sony CDU31A Series Service Manual page 20

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Item/Procedure
6.
Audio play
a.
Hit ~ (Audio TEST) key.
(Display 3-4-5 shows up)
b.
Hit~ (Play Audio) key to start
audio play.
I
Esc
l
I
_Abort
Fl
Disable
Eject SW
F3
PLAY MODE OC
L+R-+
L
F5
PLAY MODE OA
L
-+
L&R
F7
PLAY MODE OF
L+R
-+
L&R
F9
Play Audio
rvo' C uMEJ
F4
PLAY MODE D3
L+R
-+
R
F6
PLAY t.«>DE 06
R __. L&R
F8
«
Reverse
»
Play TNO
I'
FlO
~
[A TN : 80] Loading Mechanism is Loaded
!
Specification (Normal Status)
1.
The both left/right of speakers
and
the
both
left/right
of
headphone are sounding during
audio play mode.
(MUTE test
land is low level.)
AUDIO TEST
Check point
When the both of headphone and
speakers are not sound, check
IC201-9,
IC211-8,
ICI03-88,
IC302, IC301.
Only when the speakers are not
sound, check L301, L302.
Only when the headphone are
not sound, check 0305, IC305.
When the left side are not sound,
check IC304, IC302, IC303.
When the right side are not
sound,
check
IC306,
IC302,
IC303.
Alt-Z
RESET DRIVE
Auto Spin Up : OFF /
Auto Eject : ON
L -+ L
R-+ R
L [ O.OdB]
R [ 0.0dB]
Close but No Disc /
TOC : NO LED : OFF
Display 3-4-5
3-9

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