Aiwa xc-rw700 Service Manual page 79

TROUBLESHOOTING - 16/26
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Disc recognition is abnormal
Is there
CDR/RW signal input
normally?(IC601 pin 33)
YES
Go to Track Servo is unstable
RF output is abnormal
Is there
PICK UP(A,B,C,D) output
normally? (CN401 pin 8,9,
14,15)
YES
Is RRF signal
output normal?(IC401 pin 86)
First Recognition try : Over 1.7 Vpp
Second Recognition try :
TE
L 13942296513 Over 0.5 Vpp
YES
OK
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NO
RECD1, RECD2 signal
output normally? (IC401 pin
Replace IC701 (MICOM)
NO
Check the PICK UP FFC.
Replace the PICK UP
Check the connection between
NO
CN401 and IC401.
Replace the IC401(CXA2551R).
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2 9
8
Is there
80,81)
YES
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3 6 7 1 3 1 5
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.
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9 4 2 8
NO
Go to RF output is abnormal
NO
Go to Laser is abnormal
0 5 8 2 9 9 4 2 8
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9 9
9 9