factory technician level - complete with board views :
( removing chassis from cabinet , only thing missing ) ;
on weekends , staff is not available so - be patient .
Excellent manual. In addition to the information I needed was a complete description of both electronic and mechanical devices.
Excellent site.
Thank you very much.
Text excerpt from page 9 (click to view)
TROUBLESHOOTING
C-1. Bad playback quality (1)
Noise appears on the playback screen.
Is noise diminished by tracking adjustment. YES Noise band is trembled up and down? YES Is there CTL pulse at IC601 pin#97? YES
NO Re-adjust PATH.
NO
Noise appears on the screen even though changing tape.
YES Re-adjust PATH.
NO
Is the height of CTL HEAD normal? No dust?
NO
Re-adjust the height of AC HEAD. Remove the dust.
Check IC601.
Is there problem in CTL Input circuit and amplifier.