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MarkBass CMD 102p 2x10 Parallel to Series Effects Loop Jumpers

Hi,
I've searched and found many threads saying that it is a simple matter of moving jumpers. I've even received a pdf file from a forum member with instructions and a picture of the circuit board for a MarkBass LMII.

Unfortunately my circuit board in the amp head from the combo looks very different from the picture I received. Supposedly there are two jumpers to switch. I can clearly identify the one on the rear panel board. The second jumper on the pre-amp board looks different from the picture. It has a jumper but is not labeled "parallel" like the picture on the pdf and the surrounding electronic elements and board layout look very different from the picture. I don't know if the circuit board design has changed or if it is a different amp head unit in the combo (LMIII?). Perhaps this design only requires changing ONE jumper?

Does anyone have a similar document describing how to make the change specifically in the combo unit MarkBass CMD 102p 2x10?

PM me if necessary. Thanks in advance.
 

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