Display Provided When Self-Diagnostic Function Started; Details Of Indication - Yamaha A-S701 Service Manual

A-S701
● Display provided when Self-Diagnostic Function started
・ Indication of protection information
● Details of Indication
• Indication of firmware version
The firmware version of the microprocessor (IC502 of the FUNCTION P.C.B.) is indicated in the binary code (BCD) using
the "COAXIAL", "CD", "TUNER" and "PHONO" indicators. (Fig. 4)
• Indication of AUTO POWER STANDBY switch
The status (ON/OFF) of the "AUTO POWER STANDBY" switch located on the rear panel is indicated using the "LINE 2
INPUT" indicator. (Fig. 5)
Light up:"AUTO POWER STANDBY" switch is "ON"
"AUTO POWER STANDBY" switch is "OFF"
Off:
16
Power indicator
・ Indication of auto power standby status
Binary number (BCD) [Lightup: 1, Off: 0]
COAXIAL
(2 = 8) 3
1
1
1
・ Indication of firmware version
Fig. 3
INPUT indicators
CD TUNER
(2 = 2) 1
(2 = 4) 2
0 1
0 1
1 0
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Fig. 4
status
Fig. 5
INPUT indicators
Firmware version
PHONO
Decimal number
(2 = 1) 0
0 V0010 (8+2=10)
1
V0011 (8+2+1=11)
0 V0012 (8+4=12)
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