36
RX-V681/RX-A760
RX-V681/RX-A7
60
2-2. When the protection function worked due to abnormal DC output.
Cause:
DC output of the power amplifier is abnormal.
Supplementary information:
The protection function worked due to a DC voltage appearing at the speaker terminal. A
cause could be a defect in the amplifier.
Turning on the power without correcting the abnormality will cause the protection function to work in
5
seconds and the
power supply will be shut off.
2-3. When the protection function worked due to abnormal voltage in the power supply section.
Cause:
The voltage in the power supply section is abnormal.
Supplementary information:
The protection function worked due to a defect or overload in the power supply.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 second and the
power supply will be shut off.
Notes:
•
Applying the power to this unit without correcting the abnormality can be dangerous and cause additional
circuit damage. To avoid this, if
“
PS
”
and
“
DC
”
protection function works 3 times consecutively, the power will
not turn on even when the
“
MAIN ZONE
z
”
key is pressed. In order to turn on the power again, start up the
selfdiagnostic function.
•
The output transistors in each amplifier channel should be checked for damage before applying power to this
unit.
•
Amplifier current should be monitored by measuring DC voltage across the emitter resistors for each channel.
PS PRT:xxx
xxx: A/D conversion value of voltage at the moment when the protection function worked
(Reference voltage: 3.3 V=255)
PS1/PS2/PS3
DC PRT:xxx
xxx: A/D conversion value of voltage at the moment when the protection function worked
(Reference voltage: 3.3 V=255)
Содержание RX-V681
Страница 3: ...3 RX V681 RX A760 RX V681 RX A760 FRONT PANELS RX V681 RX A760 ...
Страница 4: ...4 RX V681 RX A760 RX V681 RX A760 REAR PANELS RX V681 U C models RX V681 R model RX V681 S model ...
Страница 5: ...5 RX V681 RX A760 RX V681 RX A760 RX V681 T model RX V681 A model RX V681 B G models ...
Страница 6: ...6 RX V681 RX A760 RX V681 RX A760 RX V681 F model RX V681 L model RX V681 H model ...
Страница 7: ...7 RX V681 RX A760 RX V681 RX A760 RX V681 V model RX A760 U C models RX A760 R model ...
Страница 8: ...8 RX V681 RX A760 RX V681 RX A760 RX A760 T model RX A760 A model RX A760 G F models ...
Страница 9: ...9 RX V681 RX A760 RX V681 RX A760 RX A760 L model ...
Страница 10: ...10 RX V681 RX A760 RX V681 RX A760 REMOTE CONTROL PANEL RAV537 Remote control sheet T model ...
Страница 157: ...158 RX V681 RX A760 MEMO MEMO ...
Страница 170: ...AV RECEIVER RX V681 RX A760 ...