Marantz PM6005 Service Manual

DC OFFSET VOLTAGE ADJUSTMENT
Adjusting Procedure
DC Offset Voltage Adjustment
(1) Before turning on the power, Insert Digital Voltage Meter between the SPEAKERS SYSTEM A (L CH) "+" and "-".
Insert Digital Voltage Meter between the SPEAKERS SYSTEM A (R CH) "+" and "-".
(2) Adjust the VOLUME to MIN.
(3) Turn on the power. Then turn the SPAKERS SW to A.
Adjustment is started immediately after a speaker relay turns on.
(4) First L CH is adjusted.
The variable resistor V6003 on CUP12578Z is turned with adjustment driver, and the Digital Voltage Meter is adjusted
to "0 mV ± 3 mV".
(5) Then, R CH is adjusted.
The variable resistor V6004 on CUP12578Z is turned with adjustment driver, and the Digital Voltage Meter is adjusted
to "0 mV ± 3 mV".
NOTE : DC offset voltage drops when turn the semi-xed resistor (V6003 and V6004) clockwise. DC offset voltage rises
when turn the semi-xed resistor un-clockwise. Please turn it slowly, because value of Digital Voltage Meter
changes slowly.
(6) Although after-adjustment DC offset voltage has some change, Please check that the range of DC offset voltage
between L ch (R ch) "+" and L ch (R ch) "-" terminal of SPEAKERS SYSTEM A is "0 mV ± 20 mV". CHART OF
FACTORY MODE.
Digital Voltmeter Digital Voltmeter
R ch
V
L ch
V
V6001
N6003
V6002
N6004
V6003 V6004
31
1 3
23

Marantz PM6005 Specifications

General

Amplifier class	-
Frequency range	10 - 70000 Hz
Input sensitivity	200 mV
Audio output channels	2.0 channels
Peak power per channel	60 W
Signal-to-Noise Ratio (SNR)	102 dB
Total Harmonic Distortion (THD)	0.08 %
RMS power output per channel (8 Ohm)	45 W
AC (power) in	Yes
Audio (L/R) in	5
Audio (L/R) out	1
Speakers connectivity type	RCA
Purpose	Home
Product color	Black
Connectivity technology	Wired
AC input voltage	120 V
AC input frequency	60 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	155 W

Weight and Dimensions

Depth	370 mm
Width	440 mm
Height	105 mm
Weight	7600 g