SD-CX1W
– 74 –
Does the pickup lens go up and down when removing the
disc ?
No
Yes
No
Refer to "The triangular wave for focus servo does not
appear".
Check the optical pickup wires. If OK, the optical pickup is
defective.
IC2 is defective.
Yes
• Out of focus.
Is the waveform inputted at pin 15 on IC2 when loading a
disc ? <Refer to the waveform diagrams on page 70.>
Normal
No
Check between IC2 and CNS1. If OK, the optical pickup is
defective.
Check the parts around IC2. If OK, IC2 is defective.
Check the portion between IC1 and CNS2 and connection of the optical pickup wires. If OK, the optical pickup is defective.
Yes
• HF is abnormal.
Is tracking input found at pin 11 of IC2 ?
<Refer to the waveform diagrms on page 70.>
No
Check the parts around IC3. If OK, IC3 is defective.
Is the tracking output found at pin 34 on IC3 in the CD test
mode 4 ?
No
Check the parts around IC1. If OK, IC1 is defective.
Is there the output between pins 5 and 6 on IC1 ?
Yes
Yes
Is the output (tracking error signal) found at pins 4 and 5 on
IC2 in the CD test mode 3 ?
Abnormal
Yes
No
Refer to "The sled motor does not run".
IC2 is defective.
Check the portion between IC1 and CNS2 and connection of the optical pickup wires. If OK, the optical pickup is defective.
Check the portion between IC1 and CNS3, sires and periphery of the sled spin motor. If OK, the motor is defective.
Yes
• Track search is impossible.
Is the waveform outputted to pins 11 and 17 on IC2 when a
track is jumped ?
<Refer to the waveform diagrams on page 70.>
No
IC3 is defective.
Is the wave form output found at pins 34 and 40 on IC3 when
a track is jumped ?
<Refer to the waveform diagrams on page 71.>
No
If the parts around IC1 are normal, IC is defective.
Is the slide output found at pins 25 and 26 on IC1, and the
tracking output at pins 5 and 26 ?
Yes
Yes
Does the sled motor run by pressing the / button
in the test mode ?
No
Summary of Contents for SD-CX1W(BL)
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Page 115: ...SD CX1W 16 M E M O ...