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 18 (click to view)
Changing the Battery
When the indicator goes dim or no longer lights while an effect is on, it means that the battery is nearly dead and must be replaced. Replace the battery following the steps below.
* The use of an AC adaptor is recommended as the unit�s power consumption is relatively high. Should you prefer to use batteries, please use the alkaline type.
fig.12
1. Loosen the thumbscrew at the front of the pedal, then lift the pedal upwards to open the unit.
* The thumbscrew can be left in the pedal while changing the battery.
Thumbscrew
Pedal Spring Base
2. Remove the old battery from the battery housing, and remove the snap cord connected to it. 3. Connect the snap cord to the new battery, and place the battery inside the battery housing.
* Be sure to carefully observe the battery�s polarity (+ versus �).
Battery Snap Cord
Coil Spring Guide Bush Hole
4. Slip the coil spring onto the spring base on the back of the pedal, then close the pedal.
* Carefully avoid getting the snap cord caught in the pedal, coil spring and battery housing.
Battery Snap Battery Housing 9V Battery
5. Finally, insert the thumbscrew into the guide bush hole and fasten it securely.