For our Sony digital HD reel-to-reel machines, we used Everclear grain alcohol for head cleaning.
And here, lint-free Tech Wipes. Spin the head, hold the wipe steady. No up-and-down. No q-tips/swabs except for guides or stationary audio/control track heads.
Are your Sony machines HDD-1000 type?
Chip
Last edited by Chip Chester; 01-09-2018 at 11:53 AM.