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 54 (click to view)
HCD-DX10/RG4SR/RG20/RG30T
REVISION HISTORY
Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. 1.0 1.1 1.2 Date 2001.06 2003.05 2003.11 New Correction of Ref.No.64,67 Change of Part No. for Ref. No.188 (KSM-213D)
(SPM-03023) (SPM-03061)