52
Channel
Measuremet
Point Point
Surround Left
CN61
VR81
Center
CN61
VR81
Surround Right
CN61
VR81
Front Left
CN61
VR81
Surroud Back Left
CN61
VR81
Front Right
CN61
VR81
After Turning ON
Time Table of Idling Current Rise
DC voltmeter........Connect to CN61
Measurement Voltage
12.0 mV
±
0.5 mV
13.0 mV
±
0.5 mV
13.0 mV
±
0.5 mV
13.2 mV
±
0.5 mV
13.4 mV
±
0.5 mV
13.5 mV
±
0.5 mV
(CN61)
Alignment
10 min
20 min
30 min
40 min
50 min
5 min
Surroud Back Right
No.
1
2
3
4
5
6
7
CN61
VR81
13.5 mV
±
0.5 mV
60 min
9. 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 (VR81) according to the digital
voltmeter readings. The target setting value is the following
table for each channels.
Settings :
Master Volume — Minimum
Speaker out
— No Load
Top lid
— OPEN
Содержание SR4500
Страница 8: ...6 Personal notes ...
Страница 10: ...9 10 4 BLOCK DIAGRAM ...
Страница 11: ...11 12 5 SCHEMATIC DIAGRAM INPUT DSP PCB 1 3 INPUT ...
Страница 12: ...13 14 INPUT DSP PCB 2 3 DSP ...
Страница 13: ...15 16 INPUT DSP PCB 3 3 CPU ...
Страница 14: ...17 18 MAIN PCB TUNER PCB ...
Страница 15: ...19 20 VIDEO PCB COMPONENT DIG INPUT PCB ...
Страница 16: ...21 22 FRONT PCB ENCORDER PCB H P PCB PUSH SW PCB ...
Страница 17: ...POWER TRANS 1 PCB POWER TRANS 2 PCB POWER TRANS 3 PCB 23 24 ...
Страница 18: ...25 26 BIAS TR PCB BIAS TR PCB BIAS TR PCB BIAS TR PCB BIAS TR PCB BIAS TR PCB REGULATOR PCB BIAS TR PCB ...
Страница 21: ...31 32 CUP11694 INPUT DSP PCB BOTTOM Q309 Q310 Q319 Q320 ...
Страница 24: ...36 CUP11693 5 POWER TRANS PCB 1 Q131 CUP11693 7 POWER TRANS PCB 2 CUP11693 8 POWER TRANS PCB 3 ...
Страница 25: ...37 CUP11696Z REGULATOR PCB IC91 IC92 IC93 BIAS TR PCB Q851 ...