Thank you for having the manual I needed for an older model Aiwa stero I had found on Ebay --- I wanted the Aiwa because I had tapes and cd's but I did not have a manual as to how to operate the system... I found what I needed and it has enabled me to set the system up for my enjoyment.
I wished detailed information of the JBL S310 and here I found it! Very happy with the service from this site!
Text excerpt from page 33 (click to view)
Refer to Figure 10. 1. Turn the knob at the end of the ribbon take-up spindle (1) clockwise until it stops. This causes the ribbon release bars to pivot down (2), easing the spindle�s �grip� on the wound ribbon. 2. Slide the ribbon off of the ribbon take-up spindle. Once the used ribbon has been removed, ensure that the arrow on the knob aligns with the indented notch in the ribbon take-up spindle (see inset). 3. Remove the empty core from the ribbon supply spindle. 4. Follow the ribbon loading procedure on page 14 to load the new ribbon.