Yamaha RX-V465, Service Manual

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RX-V465/HTR-6240/
AX-V465
RX-V465/HTR-6240/AX-V465
DST/DK
DST: Destination detection
(Reference voltage: 3.3 V=255)
DK: DOCK type detection
(Reference voltage: 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)
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）
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）
D S T : 0 2 7 D K : 2 5 5
K O : 2 5 5 K 1 : 2 5 5
Destination detection for AD port
Pull-up resistance 10 k-ohms
DOCK detection for AD port (IC20 Microprocessor pin no. 128)
Pull-up resistance 10 k-ohms
Ohm (R3809 VIDEO P.C.B.) 0.0 k 1.2 k 2.7 k 4.7 k 6.8 k 10.0 k 15.0 k 47.0 k 100.0 k
A/D value (3.3 V=255) 0 – 15 15 – 46 46 – 69 69 – 92 92 – 115 115 – 139 139 – 177 185 – 224 224 – 247
DEST (139 pin) J U C R T K A B, G, E, F L
DOCK type (DKID 141 pin) Bluetooth iPod No connect
A/D value (3.3 V=255) 5 – 25 120 – 140 255
Display / 表示 KEY1 (134 pin)
0 – 11 DIRECT
12 – 32 STRAIGHT
33 – 54 INFO
55 – 77 MEMORY
78 – 98 PRESET
◀
99 – 120 PRESET ▶
121 – 143 CATEGORY ◀ FM
144 – 165 CATEGORY ▶ AM
166 – 185 TUNING CH
◀
186 – 205 TUNING CH ▶
206 – 225 INPUT ◀
226 – 245 INPUT ▶
255 KEY OFF
Display / 表示 KEY0 (133 pin)
0 – 11 SCENE RADIO
12 – 32 SCENE CD
33 – 54 SCENE TV
55 – 75 SCENE BD/DVD
76 – 95 —
96 – 118 —
119 – 142 PROGRAM ▶
143 – 162 PROGRAM ◀
181 – 197 STANDBY/ON
198 – 229 TONE CONTROL
255 KEY OFF