Key1/Key2 - Yamaha RX-V373 Service Manual

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RX-V373/HTR-3065
9-5.

KEY1/KEY2

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 "9-5. KEY1/KEY2" menu is selected,
keys become inoperable due to detection of
the values of all keys. However, it is possible
to advance to the next menu by turning the
"VOLUME" knob.
(Reference voltage: 3.3 V=255)
Display
0 – 11
12 – 37
38 – 64
65 – 88
79 – 113
114 – 139
140 – 164
165 – 186
187 – 226
255
42
K 1 : 2 5 5 K 2 : 2 5 5
K1
Display
STRAIGHT
0 – 11
TUNING >>
12 – 32
TUNING <<
33 – 54
AM
55 – 75
FM
76 – 96
PRESET >
97 – 119
PRESET <
120 – 142
MEMORY
143 – 163
INFO
164 – 181
KEY OFF
182 – 197
198 – 229
255
9-5.
KEY1/KEY2
パネルキーの検出
パネルキーの A/D 値が規定範囲から外れると、
正常な動きをしません。
下表をご覧になり、各キーの分圧抵抗の定数、
ハンダ不良等の確認をしてください。
※ 9-5. KEY1/KEY2 メニューにすると、 全キー
の値を検出するためキー操作はできなくな
りますが、 VOLUME つまみを回すことに
より、次のメニューに進めることができま
す。
(基準電圧:3.3 V=255)
KEY2
KEY1
K2
RADIO (SCENE4)
CD (SCENE3)
TV (SCENE2)
BD/DVD (SCENE1)
PROGRAM >
PROGRAM <
INPUT >
INPUT <
(Power)
TONE CONTROL
KEY OFF

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