I am so happy found this site as it consists of so many Manuls and easy to aquire. This onei s exactly what I wanted and much more as it has info on not only how to use the tuner but how to repair it as well. I will come here 1st before purchasing else where! Thanks owner-manual.com!
is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
Text excerpt from page 10 (click to view)
2-3. Electrical Parts List
BKDS-7080/7081 AUX BUS Remote Panel
No. 1 2 3 4 Board name CPU-306 KY-469A KY-469B KY-469C Circuit function System Control Board Switch Board Switch Board Switch Board Model name BKDS-7080/7081 BKDS-7080 BKDS-7081 BKDS-7081 Page 2-7 2-9 2-10 2-12