I am a very proud owner of a DCC730. It plays DCC cassettes perfectly, no dropouts whatsoever. But when put in service mode the display shows 00 01000000. The next display indicates head 2 with an error rate of 20. All other heads have an error rate of 00, except for head 9 which has an error rate of 50, but I’ve read that is normal with your own recordings.
I have cleaned the heads several times with a cotton swab drenched in IPA but it did not improve one bit. The capstans are clean like a mirror and I also replaced the pinch rollers.
I’ve read that at an error rate of 20 the head isn’t defective but needs cleaning. But my intensive cleaning doesn’t improve it. I did not fiddle with head azimuth because I have absolutely no dropouts.
Is there another way to check if a head is defective, worn, or just dirty? I tried to take a macro picture of the head but couldn’t succeed.
Could head 2 be worn while other heads are in perfect condition?