Power Amplifier Adjustment; Idling Current Alignment; Time Table Of Idling Current Rise - Marantz SR5600 Service Manual

3. POWER AMPLIFIER ADJUSTMENT

Idling Current Alignment

1. Each of the measurement points are provided with the two test points. Set a digital Voltage meter to DC voltage input,
connect the meter to the test points at both contact points.
2. After the setup above, turn on the main switch.
3. Adjust variable resistors (VR41, VR42...VR71) according to the digital voltmeter readings. The target setting value is
the following table for each channel.
Settings: Master Volume — Minimum
Speaker out — No Load
Top lid — OPEN
Channel Alignment Point Measurement Point
Front L
Center
Front R
Surround L
Surround R
Surround Back L
Surround Back R

Time Table of Idling Current Rise

After Turning ON
10 to 19 degrees centigrade
5 min.
10 min.
20 min.
30 min.
40 min.
50 min.
60 min.
VR41 CN41
VR61 CN61
VR51 CN51
VR42 CN42
VR52 CN52
VR62 CN62
VR71 CN71
Ambient temperature
Measurement Voltage
1.2 mV ± 0.3 mV
1.2 mV ± 0.3 mV
1.4 mV ± 0.3 mV
1.6 mV ± 0.3 mV
1.7 mV ± 0.3 mV
1.8 mV ± 0.3 mV
1.9 mV ± 0.3 mV
Ambient temperature
20 to 30 degrees centigrade
Measurement Voltage
2.0 mV ± 0.3 mV
2.1 mV ± 0.3 mV
2.5 mV ± 0.3 mV
2.7 mV ± 0.3 mV
2.9 mV ± 0.3 mV
3.1 mV ± 0.3 mV
3.2 mV ± 0.3 mV
6