Yamaha R-N402, Service Manual

Page: 46 / 83

46
R-N402/R-N402D
R-N402/R-N402D
Pin
No. Function Name
(P.C.B.)
I/O
Detail of Function
F
U
L
L
O
N
PO
W
ER
O
FF
M
C
U
S
LE
E
P
A
C
O
F
F
103 N C PU _ SP I_ N _C S O O O O N W-01 SP I chip select
10 4 DA C_ N _C S O O O O DA C chip select
10 5 N C PU _ ADT _M UTE O O O O N etwork audio distribution mute signal
106 PS 3_ PRT AD PS protection 3 D I R & DA C power supply monitor
107 PS 2_ PRT AD PS P rotection 2 N W-01 power supply monitor
10 8 N C PU _M UTE 1 O O O O N W-01 mute signal (1)
109 USB _V BUS _ PRT AD USB P rotection USB V BUS power supply monitor
110 TH M3_ PRT AD I I I T hermal sensor under diode bridge
111 DEST AD AD reserve
112 (no_use) O O O O
113 D I R _ SD 0 I I O I D ata audio signal check in P C B digital ( D I AG )
11 4 D I R _WC K I I O I Word clock audio signal check in P C B digital ( D I AG )
11 5 (no_use) O O O O
116 MO DE L I I I I For Model recognization R - N4 02 : H / R - N4 02 D : L
117 (no_use) O O O O
11 8 (no_use) O O O O
119 (no_use) O O O O
120 D C_ PRT AD I I I P ower amplifier D C detect
121 (no_use)
122
TH M AD I I I T hermal sensor
123 (no_use) AD
12 4 KEY 1 AD I I I KEY AD value uptake 2
12 5 KEY 0 AD I I I KEY AD value uptake 1
126 PS 1_ PRT AD I I I PPS protection 1 M A I N power supply monitor
127 A V SS MC U MC U MC U MC U C PU ground
12 8 FC T _O UTPUT AD O O O A udio signal output check in FC T
F U LL O N : D uring normal operation
P OW ER OFF : D uring transition from normal operation to standby state
MC U S L EEP : S tandby state
A C OFF : D uring transition from normal operation to A C off
K ey detection for A / D port
K ey input ( A / D ) pull-up resistance 10 k-ohms
0 Ω 1 k Ω 1.3 k Ω 1.6 k Ω 2.2 k Ω 3.3 k Ω 4 .7 k Ω 7. 5 k Ω
D etected voltage
value at 12 5 pin
0.000 –
0.1 5 0 V
0.1 5 0 –
0. 45 9 V
0. 45 9 –
0.771 V
0.771 –
1.0 88 V
1.0 88 –
1. 4 2 5 V
1. 4 2 5 –
1.76 5 V
1.76 5 –
2.093 V
2.093 –
2. 4 2 4 V
A / D value
(3.3 V = 2 55 )
000 – 012 012 – 03 5 03 5 – 060 060 – 0 84 0 84 – 110 110 – 136 136 – 162 162 – 1 8 7
KEY 0
I NPUT
a
I NPUT
a
TREB L E
+
TREB L E
–
BASS
+
BASS
–
RETURN
SE L E C T
PUSH –
ENTER
(jog dial)
0 Ω 1 k Ω 1.3 k Ω 1.6 k Ω 2.2 k Ω 3.3 k Ω 4 .7 k Ω 7. 5 k Ω 1 5 k Ω 4 7 k Ω
D etected voltage
value at 12 4 pin
0.000 –
0.1 5 0 V
0.1 5 0 –
0. 45 9 V
0. 45 9 –
0.771 V
0.771 –
1.0 88 V
1.0 88 –
1. 4 2 5 V
1. 4 2 5 –
1.76 5 V
1.76 5 –
2.093 V
2.093 –
2. 4 2 4 V
2. 4 2 4 –
2.770 V
2.770 –
3.12 4 V
A / D value
(3.3 V = 2 55 )
000 – 012 012 – 03 5 03 5 – 060 060 – 0 84 0 84 – 110 110 – 136 136 – 162 162 – 1 8 7 1 8 7 – 21 4 21 4 – 2 4 1
KEY 1
TUN I NG TUN I NG PRESET PRESET
FM/ A M M E MO RY FM MO DE D I SP L AY
SPEAKER
A
SPEAKER
B