JVC KS-FX288 Service Manual page 18

KS-FX288
QQ
3 7 63 1515 0
LC72362N-9920 (IC701):System controller
1.Terminal Layout
24 - 1
25 80
40 64
41 - 64
2.Description
Pin
Symbol
I/O
No.
1
XIN I
2
GND -
3
J BUS SI I
4
J BUS SO O
5
J BUS SCK O
6
J BUSI/O SEL O
7
NC -
8
LCD SO O
9
LCD SCK O
10
LCD CE O
11
NC -
12
E.VOL SO O
13
E.VOL SCK O
14
NC -
15
TUNER ILLUM -
TE
L 13942296513
16
TAPE ILLUM -
17
CD ILLUM -
18
DIMMER OUT -
19
NC -
20
NC -
21
NC -
22
NC -
23
NC -
24
NC -
25
KS1 -
26
KS0 O
27
K3 I
28
K2 I
29
K1 -
30
K0 I
31
Vdd -
32
TEST I
33
NC -
34
SEEK/STOP O
35
MONO O
www
36
RADIO/TAPE -
37
BEEP LEVEL -
38
POWER CNT O
39
Acc -
40
NC -
1-18
http://www.xiaoyu163.com
Function
Crystal oscillator
To GND
Bus serial data input from CP751
Bus serial data output to CP751
Bus serial clock output to CP751
BUS I/O switch signal output
Non connect
Serial data output to IC651
Serial clock output to IC651
Chip enable output to IC651
Non connect
Serial data output
Serial clock output
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Initializing output port
Initializing input port
Initializing input port
Non connect
Initializing input port
Power supply
Test input
Non connect
Output the "If signal request"
Monaural and stereo change
over output
Non connect
x ao
Non connect
y
Power control output
. i
Power supply
Non connect
http://www.xiaoyu163.com
8
Pin
Symbol
I/O
No.
41 - Non connect
NC
42 - Non connect
NC
43 - Non connect
NC
44 -
BEEP Non connect
45 -
NC Non connect
46 - Non connect
NC
47 - Non connect
NC
48 I H:RADIO L:TAPE
TAPE IN
49 I FORWARD/REVERSE switch detector
F/R SENSE
50 I
TAPE MUTE DIR.FF/REW MUTE
51 I Station detector and ST input
SD/ST
52 - Non connect
NC
53 I
DETACH Detection of Front Panel
54 - Non connect
NC
55 I
J BUS INT
Q Q
BUS interruption signal detection communication
3 6 7 1 3
56 -
REMOCON To GND
57 I Change over the FM/AM Input
FM/AM
58 - Non connect
DOLBY
59 - Non connect
NC
60 - The mute time is controlled by the
MUTE
connected capacitor when changing
over the FM/AM
61 I Memory detector input
MEMORY DET
62 I
LEVEL METER
63 I Signal meter input
SMETER
64 I
KEY 2 Mementary key input
65 I Mementary key input
KEY1
Mementary key input
66 I
KEY0
67 I ACC DET
ACCDET
68 - To GND
SENS
69 I Non connect
NC
70 -
AM/FM Frequency detection
FM/AM IF COUNT
71 -
NC Non connect
72 - Non connect
NC
73 I
Vdd Power supply
74 I Input the local oscillator signal of AM
AM OSC
75 - Input the local oscillator signal of FM
FM OSC
76 - Power supply
Vss
u163
77 O Non connect
NC
78 - PLL Error signal output
ED
.
79 O To GND
TEST 1
80 Crystal oscillator
XOUT
2 9 9 4 2 8
Function
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9