Whilst this is a photo copy, and some of the pages are a little askew, it was all readable and intact. A real bonus finding an old manual for a classic piece of kit that no other site had.
It was easy done, and I got exactly what I was looking for.
Text excerpt from page 20 (click to view)
Turning off the operation beep sound
You can turn off the beep sound that is heard from your headphones/earphones when you operate your CD player.
Turning off the LCDâs backlight
While you are using the rechargeable batteries or dry batteries, the LCDâs backlight turns on for about 5 seconds every time you press a button. However, you can turn off the backlight to save the battery power.
Remove the power source (AC power adaptor, rechargeable batteries or dry batteries) from the CD player. Connect the power source while pressing x/CHARGE on the CD player or x on the remote control for about one second or more.
Remove the rechargeable batteries or dry batteries from the CD player. Insert the batteries while pressing PLAY MODE.
To turn on the beep sound Remove the power source and then connect the power source without pressing x/CHARGE or x.
To turn on the LCDâs backlight Remove the batteries and then insert the batteries without pressing PLAY MODE.
About the LCDâs backlight
The LCDâs backlight is always turned on when using the AC power adaptor.