History Of Protection Function; Display During Menu Operation; Operation Procedure Of Diag Menu And Sub-Menu; Diag Menu Selection - Yamaha RX-V459 Service Manual

The protection function worked due to the
temperature limit being exceeded. Causes
could be poor ventilation or a defect related
to the thermal sensor. If the power is turned
on with the abnormality unsolved, the pro-
tection function works in about 1 second to
turn off the power.
For detection of each protection function (except I-PRO-
TECT) , refer to DIAG MENU No.10 AD DATA.

History of protection function

When the protection function has worked, its history is
stored in memory with a backup. Even if no abnormality
is noted while servicing the unit, an abnormality which
has occurred previously can be defined as long as the
backup data has been stored.
The history of the protection function is cleared when
DIAG is cancelled by selecting PRESET RESERVED
(Memory initialized) of DIAG menu No.9 or when the
backup data is erased.

• Display during menu operation

During the DIAG operation, the menu list described in the
section of the startup screen appears on the monitor
screen and the function at work is indicated on the FL indi-
cator. The contents displayed during the function opera-
tion are described later in the "Details of DIAG menu" sec-
tion.
• Operation procedure of DIAG menu and
SUB-MENU
There are 23 MENU items, each of which has some SUB-
MENU items.

DIAG menu selection

Main unit: Select the menu using
(Reverse) keys of PROGRAM.
SUB-MENU selection
Main unit: Select the sub-menu using
(Reverse) keys of PRESET/TUNING.
DIAG menu selection
Reverse
TMP PRT:000 A
(Forward) and
(Forward) and
Keys of main unit /
Forward
Reverse Forward
U, C models
RX-V459/HTR-5940/DSP-AX459
SUB-MENU selection
Reverse Forward
R, T, K, A, G, E, L, J models
HTR-5935
19