Yamaha A-S201 Service Manual page 27

5. PROTECTION HISTORY
This menu is used to display the history of protection function.
When the "SPEAKERS B" key is pressed, the protection history being displayed will be cleared.
*
Numeric values in the figure are given as reference only.
1 P S x x x H
2 D C x x x L
3 T A x x x H
4 N O P R T
6. POWER OFF FACTOR HISTORY
This menu is used to display the history of power off factor.
6 - 1 P A N E L
6 - 2 R E M
6 - 3 S L E E P
6 - 4 A P S
6 - 5 - - -
5-1. HISTORY 1
H: Displayed when the voltage is HIGHER than upper limit
L: Displayed when the voltage is LOWER than lower limit
xxx: A/D conversion value of voltage at the moment when the protection function worked
(Reference voltage: 3.3 V = 255)
5-2. HISTORY 2
5-3. HISTORY 3
5-4. HISTORY 4
Power off factor are as follows.
6-1. LAST
6-x PANEL
6-x REM
6-x SLEEP SLEEP timer
6-2. HISTORY 1
6-x APS
6-x PRT
6-x AC
6-x ---
6-3. HISTORY 2
6-4. HISTORY 3
6-5. HISTORY 4
" " (Power) key of this unit
" " (Power) key on the remote control
POWER MANAGEMENT (Automatic Power Down) timer
Protection
AC OFF
No history
A-S201
27