I found the manual to be clear concise and complete. It was of immense assistance when removing the unit as the unit was over 22 years old and the wiring diagram was unobtainable from the manufacturer. The exploded drawings were clear as were the instructions and labels.
Very pleased with the quality of the scan. No complaints whatsoever.
Text excerpt from page 8 (click to view)
KRC-665R/591/591V/591Y/591YV
ADJUSTMENT
BALANCE/FADER/BASS/MID/TREBLE : CENTER T.ADV/METAL/DOLBY NR : OFF No. ITEM INPUT SETTINGS TCC-153 10kHz OUTPUT SETTINGS SP OUT Connect an AC voltmeter to CN5 (X14-). ALIGNMENT POINTS Head azimuth screw (FWD/REV) VR1 (L) VR2 (R) ALIGN FOR Adjust so that output level in playing FWD and REV becomes maximum each. 388mV FIG.