This is a good quality scan of the service manual which includes an assembly diagram, block diagram, schematic, and parts list. Exactly what is needed to repair my KR-V55R receiver.
Text excerpt from page 49 (click to view)
Key Finder Basic Operation
Head Unit To Listen to Music
LOCAL/BSM BAND button
The following explains the initial operations required before you can listen to music. Note: 5/�/2/3
� Loading a cassette in this product.
REG button buttons
8.1. OPERATIONS
EJECT button Cassette door 1. Select the desired source (e.g. Tuner).
EQ button
Each press changes the Source ...
Each press of SOURCE/OFF button selects desired source in the following order: Tuner = Tape Buttons 1�6
� The sound source will change when a cassette tape is not set in this unit. +/� PTY AUDIO button
