Yamaha RX-V461 Service Manual page 17

QQ
3 7 63 1515 0
When there is a history of protection function due to excessive heat sink temperature
Cause: The temperature of the heat sink 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.
If the power is turned on with the abnormality unsolved, the protection function works in about 1 second to turn off the
power.
For detection of each protection function, refer to DIAG menu described later.
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. 8 or when the backup data is erased.
• Operation procedure of DIAG menu and Sub-menu
There are 18 menu items, each of having sub-menu items.
DIAG menu selection:
TE
L 13942296513
Select the menu using ">" (forward) and "<" (reverse) keys of PROGRAM.
Sub-menu selection:
Select the sub-menu using "SCENE 2" (forward) and "SCENE 1" (Reverse) keys.
• Functions in DIAG mode
In addition to the DIAG menu items, functions as listed
below are available.
www
• Power on/off
• Master volume
• Muting
• Speakers A/B/OFF
.
• Input selection
• Audio select
• Tone control
* Functions related to the tuner and the set menu are
not available.
http://www.xiaoyu163.com
Sub-menu selection
Reverse
Reverse
DIAG menu selection
x ao
y
i
http://www.xiaoyu163.com
8
THM PRT:xxx
AD value when the protection function is working
Q Q
3 6 7 1 3
Keys of main unit
Forward
Forward
• Initial settings used to start DIAG
The following initial settings are used when starting
DIAG.
When DIAG is canceled, these settings are restored to
those before starting DIAG.
u163
• Master volume: -20 dB
• Input: DVD (MULTI CHANNEL INPUT OFF)
.
• Effect level: 0 dB
• DIAG menu: 1. ANALOG BYPASS
RX-V461/HTR-6040/RX-V461DAB
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9
17