Self-Diagnostic Function; Protection Information Display; List Of Protection Information - Yamaha AS2000BL Service Manual

A-S2000
I SELF-DIAGNOSTIC FUNCTION /
G Protection Information Display
When the power to this unit is turned on and the power
indicator is flashing, the normal operation is not avail-
able because the protection function is at work.
In that case, the protection information can be dis-
played by following procedures. However, the power
supply relay (RY1 of FUNCTION P.C.B.) does not turn
on.
• Operation procedures
Turn the "BALANCE" knob counterclockwise fully
and then while pressing down the "AUDIO MUTE"
switch, set the "POWER ON/OFF" switch to the
ON position.
"POWER ON/OFF" switch
•

List of protection information

The type of protection function is indicated by the
flashing pattern of the POWER indicator.
Types of protection function /
Normal
(no protection function) /
PS protection / Flashing 2 /
PS AMP protection 1/2 / Flashing 3 /
AMP DC protection L/R ch /
Flashing 4 /
HP DC protection L/R ch /
Flashing 5 /
I protection L/R ch / Flashing 6 /
TMP protection L/R ch / Flashing 7 /
28
POWER indicator
"BALANCE" knob
Lit /
500mS 500mS 500mS
500mS 500mS 500mS
500mS 500mS 500mS
500mS 500mS 500mS
500mS 500mS 500mS
500mS 500mS 500mS
"AUDIO MUTE" switch
POWER indicator flashing pattern /
Continuous
1000mS 500mS 500mS 500mS
500mS 500mS 1000mS 500mS
500mS 500mS 500mS 500mS 1000mS
500mS 500mS 500mS 500mS 500mS
500mS 500mS 500mS 500mS 500mS
500mS 500mS 500mS 500mS 500mS
"BALANCE" knob
: Lit /
: Off /
1000mS 500mS 500mS 500mS
500mS 500mS 500mS 500mS 500mS
500mS 500mS 500mS 500mS
500mS 1000mS 500mS 500mS
500mS 500mS 500mS 1000mS
500mS 500mS 500mS 500mS 500mS