Pioneer xc-la21 Service Manual page 39

Stereo cd tuner
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5. CD troubleshooting
Is MECHA ERROR displayed ?
Open the CD tray by pressing "CD1/2/3 EJECT".
Place CD on the tray and close the tray by selecting
the corresponding "CD1/2/3 EJECT" key to close
the CD tray.
After the CD
TOC is read, are the
number of the total tracks and playing
time displayed correctly ?
TE
L 13942296513
Please press CD PLAY/PAUSE key or
CD SELECT key of DISC No.
Do the CD playing and the
CD time display correctly ?
Is the audio signal come
out on the speaker ?
Please push FWD key or REW key
Can you smoothly select the music ?
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.
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D
YES
NO
NO
YES
NO
Please tune the CD again.
YES
NO
YES
NO
Please check the CD
YES
sleding circuit and tune the
x
ao
y
CD again.
i
OK
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8
• The total track number is incorrectly
displayed
B
Do the CD head sled to the inner ?
Do the laser radiate normally ?
Do the lens vertical motion ?
Q Q
3
6 7
1 3
Do the disc start to spin ?
Do the head move to outward slowly ?
Please tune the CD servo circuit
E
u163
.
2 9
9 4
2 8
Please check 3P, 4P of
YES
CN4 and 9P, 11P of IC3.
Please check PICK UP
YES
and Q1, L1, D1, R34.
Please check the
YES
connection CN3 and 5P,
2P, 4P of IC3.
1 5
0 5
8
2 9
9 4
Please check the
YES
connection CN4 and 8P,
9P, 11P of IC3.
Please check the
YES
connection CN3 and 5P,
2P, 4P of IC3.
m
co
XC-LA21
9 9
NO
NO
NO
2 8
9 9
NO
NO
39

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