Exiting Method; Fl Display At Start-Up Of Diagnostic Program; History Of Protection Function - Yamaha RX-V795a Service Manual

FL display at start-up of diagnostic program

When the diagnostic program has started, the history (*2) of the protection function (*1) is displayed. If the protection
function has been activated in the past, the type and voltage value are displayed. After a few seconds the diagnosis
function menu will appear.
(*1) If some faulty condition is detected in the excess current, the power source or the DC, the power will be turned
off automatically.
(*2) The protection records will be cleared when "PRESET RSRVD" is selected in diagnosis menu No. 8 and
FACTORY PRESET is engaged.

History of protection function

Each case of the history of the protection function is displayed as shown below.
CHK SUM:XXXX
I PROTECTION
PS PRT : XX%
DC PRT : XX%
TMP PRT : XX%
* For the voltages of Power and DC protection functions, see diagnosis menu No.9, which will be described later.

(2) EXITING METHOD

The diagnosis function can be exited by any of the following procedures. Take care with the setting of backup memory
initialization menu (diagnosis No. 8) when exited the diagnosis function:
1. Select diagnosis menu No. 11/submenu No. 6 "EXIT".
2. Press the "STANDBY/ON" key on the main unit or "STANDBY" key on the remote control to turn power off.
Main microprocessor check sum (4-digit, hexadecimal) and ver-
sion (one letter) display
X
* Used when checking on-board writing to main microprocessor.
Appears when the current protection function is operating.
When power is turned on in an abnormal status, the power relay
will come on, protection will operate immediately, and power will
turn off.
Appears when the power protection function is operating.
For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
after half a second.
Appears when the power amp DC protection function is operating.
For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
after two seconds.
Appears when the heat sink thermal protection function is operat-
ing. For the % value, the voltage at that point is shown by 5V/100%.
When power is turned on in an abnormal status, power will turn off
after one second.
RX-V795a/RDS/HTR-5170
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