37
RX-V681/RX-A760
RX-V681/RX-A7
60
2-4. When the protection function worked due to excessive heatsink / bridge diode (D1040) temperature.
Cause:
The temperature of the heatsink / bridge diode (D1040) is excessive.
Supplementary information:
The protection function worked due to the temperature limit being exceeded. Causes could
be poor ventilation or a defect related to the thermal sensor.
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.
2-5. When the protection function worked due to excessive power supply voltage of USB.
Cause:
The power supply voltage of USB is excessive.
If the power supply voltage of the USB device connected to the USB terminal is abnormal,
”
USB Overloaded
”
is displayed
and the protection function works and the power supply will be shut off.
2-6. When the protection function worked due to short between speaker terminals.
Cause:
Because of the speaker cables, etc., a short occurred between the speaker terminals, and excessive current
flowed through the amplifier.
Supplementary information:
Use the same detection route as for the protection function due to excess current.
If excess current is detected after the speaker relay worked (ON), it is determined that there may be a short between the
speaker terminals.
Protection function works and the power supply will be shut off.
If the power supply is turned on again,
“
CHECK SP WIRES
“
will be displayed.
●
History of protection function
When the protection function has worked, its history is stored in memory as backup data.
Even if no abnormality is noted while servicing the unit, an abnormality which has occurred previously can be
checked as long as the backup data has been stored.
For details, refer to
“
P2. PROTECTION HISTORY
”
menu.
TMPxPRT:xxx
xxx: A/D conversion value of voltage at the moment when the protection function worked
(Reference voltage: 3.3 V=255)
TMP1/TMP3
USBPRT:xxx
SPK PROTECT
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 ...