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.
This manual was very good & was very helpful with repairs.
Always great & fast service from Owner's manual.
Text excerpt from page 14 (click to view)
DVR-8100
ADJUSTMENT
No. ITEM INPUT SETTINGS OUTPUT SETTINGS AMPLIFIER SETTINGS ALIGNMENT POINTS ALIGN FOR FIG. Unless otherwise specified, the individual switches should be set as following: POWER: ON SELECTOR: EXCEPT TUNER Connect the DC voltmeter to speaker terminal (J500). Less than ±10mV Note: Adjust it as possible as minimun voltage (Approx: ±2mV)