[rodgersorganusers] Re: a technical question about an 810 Alexandria

Maybe I missed it, but apparently this reply concerning the Model 810 never got 
posted.  Here are the comments again:

Model 810 is a "Micasko" series organ.  "Micasko" is an acronym for 
"Microprocessor-controlled and serial-keyed organ."  These instruments have 
some different characteristics than later CPU-controlled Rodgers organs.  Some 
Micasko's have been updated with a "B" CPU kit, and the info that follows will 
not apply to them.

In Micasko "A" organs, the power switch always blinks when you first push it.  
This does not indicate that the organ is in test mode.  Instead, the organ is 
waiting for your turn-on code.  These organs recognize four codes, each of 
which is user-programmable (see Micasko owner's manual or technical manual).

The sequence 1-2-1-3-1-4-1-5 is a default code that technicians use to power up 
an organ when the custom codes are not available.  Briefly, the four codes 
operate as follows:

1) The first code will turn the organ on, but will not unlock the "set" 
function of the memories.  This is the code frequently given to guest 
organists.  They can use your combinations, but not alter them.

2) The second code turns the organ on and unlocks only M1.  An organist using 
this code can use the combinations stored in both memories, and set new 
combinations on M1.

3) The third code turns the organ on and unlocks only M2.  Both memories can be 
used, but only M2 can be altered.

4) The fourth code is the "master" code, giving full access.  Both M1 and M2 
are unlocked and some additional user-programmable functions can also be 
accessed, such as the Orchestral Crescendo sequence and the range of Continuo 
and Solo couplers if so equipped.  This is the code most organists use.

Hope this clears it up.  If the previous codes are unknown, the owner's manual 
and technical manual both tell how to set new ones.  If the organ will retain 
neither its codes nor its piston memory, the first thing your technician will 
probably do is replace the backup battery.

B.E.

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