Yamaha RX-V681, Service Manual

Page: 67 / 170

67
RX-V681/RX-A760
RX-V681/RX-A7
60
P1-6. KEY
Panel key is detected.
When the A/D conversion value of the panel key becomes out of the specified range, normal operation will not
be available.
In that case, check the constant of voltage dividing resistor, solder condition, etc. Refer to table.
* When
“ P1-6. KEY ” menu is selected, keys become inoperable due to detection of the values of all keys. How-
ever, it is possible to return to the
“
P1- 5 . LIMITER CONTROL
”
menu by rotating the
“
VOLUME
”
knob counter-
clocwise.
(Reference voltage: 3.3 V=2 55 )
Display KEY1 Display KEY2
0 – 11
RADIO
(SCENE4)
0 – 11
PURE
DIRECT
12 – 32
NET
(SCENE3)
12 – 32
TUNING
>>
33 – 5 4
TV
(SCENE2)
33 – 5 4
TUNING
<<
55 – 7 5
BD/DVD
(SCENE1)
55 – 77 AM
76 – 9 5
ZONE
CONTROL
78 – 98 FM
96 – 118 ZONE2 99 – 120
PRESET
>
119 – 142
INPUT >
(RX-V681)
121 – 143
PRESET
<
143 – 162
INPUT <
(RX-V681)
144 – 16 5 MEMORY
178 – 197
MAIN ZONE
z
166 – 18 5 INFO
198 – 229
TONE
CONTROL
186 – 20 5 STRAIGHT
22 5 Key off 206 – 22 5
PROGRAM
>
226 – 24 5
PROGRAM
<
2 55 Key off
P1-7. USB-VBUS
Not for service.
P1-6
KY:255/255/---
KEY2
KEY1
P1-7
USB-VBUS:200