Marantz PM-10 Service Manual page 49

ADJUSTMENT
(
Adjusting Idling Current
Set the power voltage to the rated voltage for this adjustment.
1. Preparation
(1) Prepare a DC voltmeter.
(2) Place the unit under normal usage conditions, away from highly ventilated areas such as next to an
air conditioning machine or electric fan.
The set requires an ambient temperature of 15℃ to 30℃ and standard humidity.
(3) Settings of This Unit
• POWER (Power source switch) : OFF
• STEREO/BI.AMP SW (Rear PANEL) : STEREO
• MASTER VOLUME : "- ∞ " ( c min.) : turn counterclockwise to the lowest position.
• INPUT SELECTOR : CD
• SPEAKER (Speaker terminal) : No load
(Do not connect equipment such as speakers or dummy resistors.)
2. Adjustment Procedure
(1) Connect the DC Voltmeter to the test points.
Lch : AUDIO IN PCB : N5014, N5011
Rch : AUDIO IN PCB : N5012, N5013
(2) Connect the power cord to an outlet. Next, press the power button to turn on the power.
(3) Turn "V5001, V5002" and "V5003, V5004" clockwise ( x ) one minute after powering and adjust the
voltage at the test point to "40mV (4 mA) ±5mV(0.5mA)".
(4) Turn "V5002, V5001" and "V5003, V5004" one minute after the preliminary adjustment and set the
voltage to "40mV (4mA) ±5mV (0.5mA)".
(5) The idling current will fluctuate somewhat after adjustment. Check that the voltages of each test
point are within the "40mV (4mA) ±10mV (1mA)" range.
V5001, V5002
V5003, V5004
DC Voltmeter
V5001
N5014
49
V5002 V5003 V5004
N5011 N5012 N5013