Duocast: Anyone knows how the SJ1 switch is activated in the power section?

[mimosa]

In the Duocast schematic, does anyone know what the SJ1 switch does in the power section? Is it activated manually? Is it always ON? The voltage switch is a SPDT so it is likely in one of the footswitch. I am guessing the bypass-footswitch is turning this switch on when the effect is engaged, and even if so, I would still wonder why it's not always ON? What's the idea with this SJ1 switch,m anyone knows?

 

[jesuscrisp]

It's a jumper so you can connect pins 1 and 8 of the charge pump together if needed. The LT1054 needs them seperate, ICL7660S and TC1044S need them connected.

 

[mimosa]

It's a jumper so you can connect pins 1 and 8 of the charge pump together if needed. The LT1054 needs them seperate, ICL7660S and TC1044S need them connected.

ah that makes a lot more sense! I wish the doc would explain that. Thanks mate.

 

[Matopotato]

Sorry for being late, It looks as if the jumper is connecting pin 1 and 8 of the LT1054 by default. And the LT1054 seems to be the default pump. But the schematic has SJ1 open, indicating a cut.
Should it be cut? Or kept to connect pins 1 and 8?
Thanks in advance