Yamaha RX-397 Service Manual page 14

RX-397
5. PROTECTION SETTING
This menu is used to change the protection setting value.
The change is effective in this menu only. A set value can
be specified between 0 – 255 (0V – 5V).
Operation:
Change the digit with the "EDIT" key.
UP / DOWN with the TUNING MODE / MEMORY key.
PS_Lo:
The PS protection LO level threshold value can be set.
Protection operates when the voltage value of the de-
tection terminal falls below this value.
PS_Hi:
The PS protection HI level threshold value can be set.
Protection operates when the voltage value of the de-
tection terminal exceeds this value.
DC_Lo:
The DC protection LO level threshold value can be set.
Protection operates when the voltage value of the de-
tection terminal falls below this value.
DC_Hi:
The DC protection HI level threshold value can be set.
Protection operates when the voltage value of the de-
tection terminal exceeds this value.
TEMP :
The TEMP protection HI level threshold value can be
set.
Protection operates when the voltage value of the de-
tection terminal exceeds this value.
14
0138
0215
0049
0131
0089
6. PROTECTION HISTORY
Four protection histories are display.
The history is cleared by the initialization reservation of DIAG
menu No. 2.
When there is no history of protection function:
There is no history of protection function.
6-1 NoPRT
When there is a history of protection function:
There is a history of protection function due to excess cur-
rent.
6-1 I PRT
There is a history of protection function due to abnormal
voltage in the power supply section.
The abnormal voltage is displayed in % based on 5V as
100%.
6-2 PsPRT 069
There is a history of protection function due to abnormal
DC output.
The abnormal voltage is displayed in % based on 5V as
100%.
6-3 DcPRT 059
There is a history of protection function excessive heatsink
temperature. (R ch)
The abnormal voltage is displayed in % based on 5V as
500%.
6-4 TmRPRT 245
There is a history of protection function excessive heatsink
temperature. (L ch)
Not applied to this model.
6-4 TmLPRT 245
* The numeric value in the diagram is for reference.