Yamaha RX-V500D, Руководство по обслуживанию

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Key detection for A/D port
Key input (A/D) pull-up resistance: 10 k-ohms
Destination detection for A/D port
Pull-up resistance: 10 k-ohms
0 Ω + 1.0 kΩ + 1.0 kΩ + 1.5 kΩ + 1.8 kΩ + 2.2 kΩ +3.3 kΩ + 4.7 kΩ + 6.8 kΩ + 10 kΩ + 22 kΩ + 68 kΩ
Detected voltage value
at 124 pin
0 –
0.15 V
0.15 –
0.425 V
0.425 –
0.703 V 0.703 –
0.999 V 0.999 –
1.279 V
1.279 –
1.564 V 1.564 –
1.86 V
1.86 –
2.142 V
2.142 –
2.399 V
2.399 –
2.653 V 2.653 –
2.919 V 2.916 –
3.175 V
A/D value
(3.3 V=255)
0 – 11 12 – 32 33 – 54 55 – 77 78 – 99 100 – 121 122 – 144 145 – 166 167 – 186 187 – 205 206 – 226 227 – 246
KEY2 DIRECT
TUNING
>>
TUNING
<<
AM
(RX-V475/
HTR-4066)
DAB
(RX-V500D)
FM
PRESET
>
PRESET
<
MEMORY INFO STRAIGHT
PROGRAM
>
PROGRAM
<
0 Ω + 1.0 kΩ + 1.0 kΩ + 1.5 kΩ + 1.5 kΩ + 2.2 kΩ +3.3 kΩ + 4.7 kΩ + 13.2 kΩ + 22 kΩ + 33 kΩ
Detected voltage value
at 125 pin
0 –
0.15 V
0.15 –
0.425 V
0.425 –
0.703 V 0.703 –
0.978 V 0.978 –
1.241 V
1.241 –
1.536 V 1.536 –
1.84 V
1.84 –
2.102 V
2.102 –
2.299 V
2.336 –
2.55 V
2.55 –
2.971 V
A/D value
(3.3 V=255)
0 – 11 12 – 32 33 – 54 55 – 75 76 – 96 97 – 119 120 – 142 143 – 163 163 – 177 182 – 197 198 – 229
KEY1
RADIO
(SCENE4)
NET
(SCENE3)
TV
(SCENE2)
BD/DVD
(SCENE1)
— —
INPUT
>
INPUT
<
—
(power)
TONE
CONTROL
R5419
on OPERATION P.C.B.
0 Ω 1.2 kΩ 2.7 kΩ 4.7 kΩ 6.8 kΩ 10 kΩ 15 kΩ 47 kΩ 100 kΩ
Detected voltage value
at 111 pin
0 –
0.162 V
0.162 –
0.517 V 0.517 –
0.872 V
0.872 –
1.193 V
1.193 –
1.492 V
1.492 –
1.816 V 1.816 –
2.2 V
2.572 –
2.869 V 2.869 –
3.163 V
A/D value 000 111 222 333 444 555 666 777 888
Destination J U C R, S T K A B, G, F L, H
Pin
No.
Port Name
Function Name
(P.C.B.)
I/O
Detail of Function
FULL ON PPWER OFF MCU sleep A
C
OFF
104 P0_7 DAC_N_CS O O O O DAC chip select
105 P0_6 NCPU_AMUTE I O O O NET audio mute demand
106 AN0_5 PS3_PRT AD PS protection detection 3
107 AN0_4 PS2_PRT AD PS protection detection 2
108 AN0_3 L3_DET AD I I I D terminal L3 detection
109 AN0_2 USB_VBUS_PRT AD I I I USB iPad power supply feedback
110 AN0_1 THM3 AD I I I Temperature detection 3
111 AN0_0 DEST AD I I I Model distinction
112 P11_7 NCPU_N_RST O O O O
113 P11_6 DIR_SDO I I O I DIR_SDO input for CDDA writing
114 P11_5 DIR_WCK I I O I DIR_WCK input for CDDA writing
115 P11_4 TUNI2C_ON O O O O (reserved) I2C switching to Tuner
116 P11_3 VIDI2C_ON O O O O Vdec and A-video selector I2C line control
117 P11_2 MHL_CD_IN5 I I I I MHL cable detection
118 P11_1 MHL_VBUS_N_PRT I I I I MHL VBUS overcurrent detection
119 P11_0 MHL_VBUS_PON O O O O MHL VBUS control
120 AN7 DC_PRT AD I I I Power amplifier DC detection
121 AN6 AMP_OLV AD I I I Power amplifier output level detection
122 AN5 THM1 AD I I I Temperature detection 1
123 AN4 THM2 AD I I I Temperature detection 2
124 AN3 KEY2 AD I I I KEY AD value uptake 2
125 AN2 KEY1 AD I I I KEY AD value uptake 1
126 AN1 PS1_PRT AD I I I PS protection detection 1
127 AVSS AVSS MCU MCU MCU MCU Microprocessor ground
128 P10_0 (no use) O O O O AD spare
82
RX-V475/HTR-4066/RX-V500D
RX-V475/HTR-4066/
RX-V50
0D