5 star quality on these downloadable manuals. Easy to read and all the information is there. A must when doing a custom install or needing to service your precious old school electronics.
very helpful, the information in these manuels are very detailed
Text excerpt from page 8 (click to view)
Power Supply
The two-way power supply of this keyboard lets you use either batteries or household AC power. Always be sure to turn off power whenever you are not using the keyboard.
Battery Power
Be sure to turn keyboard power off before loading batteries.
Battery Replacement
1. 2.
Remove the battery compartment cover. Load five AA-size batteries, making sure their (+) and (�) ends are facing correctly as shown below.
3.
Insert the tabs of the battery compartment cover into their holes, and then close the cover.
� Loading batteries while power is turned on will cause the keyboard to malfunction. If this happens, turn power off and then back on again.
Battery Life
Approximately six hours with R6P (SUM-3) manganese batteries (normal temperature and optimum volume setting). Note that battery life can be shortened by playing at high volume or by very cold temperatures. Any of the symptoms listed below can indicate that battery power is too low. Replace batteries as soon as possible whenever you experience any of the following. � Dim power indicator � Low sound volume � Distorted sound � Loss of output when playing at loud volume � Sudden power loss when playing at loud volume � Sudden output of sound when no keyboard key is pressed � Output of a tone different from the one that is selected � Incorrect play of patterns or built-in tunes � Sudden loss of sound output � Dim display figures � Dimming of display figures when playing at loud volume
