Harman Kardon HK 3470 Service Manual ▷ View online
2. Pin Description
Pin No.
Pin Name I/O ACTIVE
PORT NAME
REMARK
1
Vdd
-
H
+5V
System power supply
2
P37
I
H
KR4
Key read 4
3
P36
I
H
KR3
Key read 3
4
P35
I
H
KR2
Key read 2
5
P34
I
H
KR1
Key read 1
6
P33
-
-
-
Not used
7
P32
-
-
-
Not used
8
P31
O
H/L
PWR_LED(RED)
L:AMBER L:GREEN H:RED
9
P30
O
H/L
PWR_LED(GRN)
L:STBY H:OPER L:PROT
10
RESET
I
L
System reset
Low reset
11
X2
-
-
OSC
Main system osc.
12
X1
I
-
OSC
-
13
Vpp
-
-
Conneced to Vss
14
XT2
-
-
-
Not used
15
P04/XT1
I
H/L
OPT_RDS
Rds on/off
16
Vdd
-
H
+5V
System power supply
17
P27
-
-
Not used
18
P26
-
-
Not used
19
P25
I
L
PWR DOWN
Detect power off
20
P24
O
H
PWR_RLY
Power Relay on/off
21
P23
O
H
VR_UP
Volume up
22
P22
O
H
VR_DOWN
Volume Down
23
P21
I
L
PROTECT
Detect protection
24
P20
O
H
PWR_MUTE
Power Mute
25
AVss
-
L
GND
Analog ground
26
P17
O
H
PRE_MUTE
Pre mute
27
P16
O
H
TUNER_MUTE
Tuner mute
28
P15
I
H/L
IF_IN
IF conter in
29
P15
O
H
PLL CE
30
P13
O
H
PLL CLOCK
31
P12
O
H/L
PLL DATA
32
P11
I
L
TUNED
Tuned in on : L
33
P10
I
L
STEREO
Stereo in on : L
34
Avdd
-
H
+5V
Analog power supply
35
Avref
-
L
GND
36
P03
-
-
Not used
37
INTP2
I
L
RDS CLK
Rds clock in
38
P01
I
H
RDS DATA
Rds data in
39
P00
I
L
REMOCON IN
Remocon data in
40
Vss
-
L
GND
Ground
41
P74
O
H/L
78211 CLK
42
P73
O
H/L
78211 CE
43
P72
-
-
Not used
44
P71
-
-
Not used
45
P70
-
-
Not used
46 Vdd - H +5V
uPD780204GF QFP Type
HK3370 / HK3470
9
76
Pin No.
Pin Name I/O ACTIVE
PORT NAME
REMARK
47
P127
-
-
Not used
48
P127
-
-
Not used
49
P125
-
-
Not used
50
P124
O
H/L
78211 DATA
51
P123
-
-
Not used
52
P122
-
-
Not used
53
P121
-
-
Not used
54
P120
-
-
Not used
55
P117
O
H
VMAX
VMAx on/off
56
P116
O
H
SPK1_RLY
Speaker1 relay on/off
57
P115
O
H
SPK2_RLY
Speaker2 relay on/off
58
P114
O
H
SPK1_LED
Speaker1 led on/off
59
P113
O
H
SPK2_LED
Speaker2 led on/off
60
P112
O
H
SPK12_LED
Speaker1/2 led on/off
61
P111
-
-
62
P110
-
-
63
P107
O
H
VR_LED
Volume led on/off
64
P106
I
H/L
OPT_STEP
L:E.U. , H:USA
65
P105
I
H/L
OPT_3400/3700
L:3400, H:3370
66
FIP33
O
H
S18
FIP segment output
67
FIP32
O
H
S17
FIP segment output
68
FIP31
O
H
S16
FIP segment output
69
FIP30
O
H
S15
FIP segment output
70
FIP29
O
H
S14
FIP segment output
71
FIP28
O
H
S13
FIP segment output
72
FIP27
O
H
S12
FIP segment output
73
FIP26
O
H
S11
FIP segment output
74
FIP25
O
H
S10
FIP segment output
75
FIP24
O
H
S9
FIP segment output
76
FIP23
O
H
S8
FIP segment output
77
FIP22
O
H
S7
FIP segment output
78
FIP21
O
H
S6
FIP segment output
79
Vload
-
-
Vload
FIP DRIVER VOLTAGE
80
FIP20
O
H
S5
FIP segment output
81
FIP19
O
H
S4
FIP segment output
82
FIP18
O
H
S3
FIP segment output
83
FIP17
O
H
S2
FIP segment output
84
FIP16
O
H
S1
FIP segment output
85
FIP15
O
H
G16
FIP grid output
86
FIP14
O
H
G15
FIP grid output
87
FIP13
O
H
G14
FIP grid output
88
FIP12
O
H
G13
FIP grid output
89
FIP11
O
H
G12
FIP grid output
90
FIP10
O
H
G11
FIP grid output
91
FIP9
O
H
G10
FIP grid output
92
FIP8
O
H
G9
FIP grid output
93
FIP7
O
H
G8
FIP grid output
94
FIP6
O
H
G7
FIP grid output
95
FIP5
O
H
G6
FIP grid output
HK3370 / HK3470
10
77
IC 701 : BA6208
HK3370 / HK3470
64
78
IC 302 : HI-M602HO
IC 303 : KIA7042AP
KIA
70
42AP
816
HK3370 / HK3470
65
79
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