No Sound Is Heard; The Slide Motor Does Not Run; No Sound Is Heard During Double Speed Edit/Recording Is Impossible - Denon D-A03 Service Manual

No sound is heard

Is the digital signal outputted from the pin 4 (digital OUT) of
IC149 ?
Yes
Is digital signal outputted from the pin 8 (digital OUT) of
IC150 ?
Yes
Is the digital signal sent to the pin 26 of CX281 ?
Yes
OK

The slide motor does not run

Is the slide feed signal outputted to pin 40 of IC149 by
pressing the / button in the test mode ?
Yes
Is the slide feed signal outputted between pins 25 and 26 of
IC145 ?
Yes
Is the slide feed voltage applied to both edges of the sled
motor ?
Yes
Check the slide motor. If the sled motor does not run when the DV2.0V is applied to its terminal. It is defective.
No sound is heard during double speed EDIT
(The recording is impossible)
Is the digital signal outputted from the pins 1, 2 and 3 (OUT) of
IC149 ?
Yes
Is digital signal outputted from the pins 3, 6 and 11 (OUT) of
IC150 ?
Yes
Is the digital signal sent to the pins 1, 2 and 4 of CX043 ?
Yes
OK
No
Check the parts around IC149. If OK, IC149 is defective.
No
Check the parts around IC150. If OK, IC150 is defective.
No
Check the CD/MD connection sections.
No
Check the connection of parts around IC149. If OK, IC149
is defective.
No
Check the connection between pin 20 of IC145 and pin 40 of
IC149. If OK, IC145 is defective.
No
Check the PWB pattern.
No
Check the parts around IC149. If OK, IC149 is defective.
No
Check the parts around IC150. If OK, IC150 is defective.
No
Check the CD/MD connection sections.
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