Key0 / Key1 / Key2 - Yamaha TSX-130 Service Manual

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TSX-130/TSX-120

7-6 KEY0 / KEY1 / KEY2

(Panel key of this unit detection)
The voltage at 97 pin (KEY0), 95 pin (KEY1)
and 70 pin (KEY2) of microprocessor IC201 are
displayed with 3.3V/255 as a standard.
When the A/D value of the panel key becomes
out of the specified range, normal operation will
not be available.
In this case, check the constant of voltage
dividing resistor, solder condition, etc. Refer to
table.
When this menu is selected, keys become non-
operable due to detection of the values of all
keys. However, it is possible to advance to the
next sub-menu by pressing the "CENTER" key
on the remote control.
TSX-130
Display
0 – 16
17 – 48
49 – 79
80 – 111
112 – 143
144 – 174
175 – 205
206 – 238
239 – 255
TSX-120
Display
0 – 16
17 – 48
49 – 79
80 –111
112 –143
144 – 174
175 – 205
206 – 238
239 – 255
36
7 - 6 2 5 5 2 5 5 2 5 5
Ohm
Key 0
0
SNOOZE
+ 1.5 k
PLAY/PAUSE
+ 1.8 k
STOP
+ 2.7 k
OPEN/CLOSE
+ 3.9 k
FORWARD
+ 6.8 k
REVERSE
+ 12.0 k
VOLUME +
+ 33.0 k
VOLUME -
OFF
Ohm
Key 0
0
SNOOZE
+ 1.5 k
PLAY/PAUSE
+ 1.8 k
STOP
+ 2.7 k
OPEN/CLOSE
+ 3.9 k
FORWARD
+ 6.8 k
REVERSE
+ 12.0 k
VOLUME +
+ 33.0 k
VOLUME -
OFF
7-6 KEY0 / KEY1 / KEY2
(本機パネルキー検出)
マ イ コ ン (IC201) の 97 ピ ン (KEY0) 、95 ピ ン
(KEY1)、70 ピン (KEY2) の電圧値を 3.3V/255
を基準にして表示します。
パネルキーの A/D 値が規定の範囲から外れる
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。
本メニューにすると、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、リモコンの
CENTER キーを押すと、次のサブメニューに
進むことができます。
KEY2
KEY1
KEY0
Key 1
ALARM 1
ALARM 2
SET 1
SET 2
-
ENTER
+
OFF
Key 1
ALARM 1
ALARM 2
SET 1
SET 2
-
TUNING <
ENTER
TUNING >
+
OFF
Key 2
iPod
FM
USB
CD
OFF
Key 2
iPod
FM
AUX
PRESET <
PRESET >
OFF

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Tsx-120

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