Yamaha RX-V565 Service Manual page 53

DST/DK
DST: Destination detection
(Reference voltage: 3.3 V=255)
DK: DOCK type detection
(Reference voltage: 3.3 V=255)
Destination detection for AD port
Pull-up resistance 10 k-ohms
Ohm (R3809 VIDEO P .C.B.) 0.0 k
A/D value (3.3 V=255) 0 – 15
DEST (139 pin) J
DOCK detection for AD port (IC20 Microprocessor pin no. 128)
Pull-up resistance 10 k-ohms
DOCK type (DKID 141 pin)
A/D value (3.3 V=255)
K0/K1
K0/K1: KEY0/KEY1 (Panel key of this unit)
When the A/D conversion value of the panel key
becomes out of the specified range (standard
value ±4), normal operation will not be available.
In this case, check the constant of voltage
dividing resistor, solder condition, etc. Refer to
the table below.
(Reference voltage: 3.3 V=255)
Display / 表示
0 – 11
12 – 32
33 – 54
55 – 75
76 – 95
96 – 118
119 – 142
143 – 162
181 – 197
198 – 229
255
D S T : 0 2 7 D K : 2 5 5
1.2 k 2.7 k 4.7 k
15 – 46 46 – 69 69 – 92
U C R
Bluetooth iPod
5 – 25 120 – 140
K O : 2 5 5 K 1 : 2 5 5
KEY0 (133 pin)
SCENE RADIO
SCENE CD
SCENE TV
SCENE BD/DVD
—
—
PROGRAM ▶
PROGRAM ◀
STANDBY/ON
TONE CONTROL
KEY OFF
DST/DK
DST： 仕向け先の検出
（基準電圧：3.3 V ＝ 255）
DK： DOCK タイプの検出
（基準電圧：3.3 V ＝ 255）
6.8 k 10.0 k
92 – 115 115 – 139
T K
No connect
255
K0/K1
K0/K1： KEY0/KEY1（本機パネルキー）
パネルキーの A/D 値が規定範囲（ 基準値± 4） 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。
（基準電圧：3.3 V ＝ 255）
Display / 表示
0 – 11
12 – 32
33 – 54
55 – 77
78 – 98
99 – 120
121 – 143
144 – 165
166 – 185
186 – 205
206 – 225
226 – 245
255
RX-V565/HTR-6250/AX-V565
15.0 k 47.0 k 100.0 k
139 – 177 185 – 224 224 – 247
A B, G, E, F L
KEY1 (134 pin)
DIRECT
STRAIGHT
INFO
MEMORY
PRESET ◀
PRESET ▶
CATEGORY ◀ FM
CATEGORY ▶ AM
TUNING CH ◀
TUNING CH ▶
INPUT ◀
INPUT ▶
KEY OFF
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