Yamaha AX-496 Service Manual: µ -com Data

Stereo amplifier.
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AX-496/396
I µ-COM DATA
IC101 : M37478M4-409SP
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
9
Port
I/O
Form
P53
I
I
P17
I/O
O
P16
I/O
O
P15
I/O
O
P14
I/O
O
P13
I/O
O
P12
I/O
O
P11
I/O
O
P10
I/O
O
P27
I
I
P26
I
I
P25
I
I
P24
I
I
P23
I
I
P22
I
I
P21
I
I
P20
I
I
Vref
I
Xin
I
Xout
O
Vss
Vcc
P50
I
I
P61
I/O
O
/RESET
I
P30
I
I
P31
I
I
P32
I
I
P33
I
I
P40
I/O
O
P41
I/O
O
P42
I/O
O
P43
I/O
O
P00
I/O
I
P01
I/O
I
P02
I/O
O
P03
I/O
O
P04
I/O
O
P05
I/O
O
P06
I/O
O
P07
I/O
O
P52
I
I
RE
Function
CEI
Chip Enable (Input selector)
CK
Clock
DATA
Data
TMO
Tape Monitor
VRUP
Motor Volume (UP)
VRDN
Motor Volume (DOWN)
RYPS
Power Relay
ENR
Rotary Encoder (Right)
ENL
Rotary Encoder (Left)
D34/5
AX-496, 396/596 Detect
REC
Rec Out Selector Detect
PRDC
Protection (DC)
PRI
Protection (Overload)
PRPS
Protection (Power Supply)
VREF
XIN
XOUT
VSS
VCC
PRINH
Release the Protection
/RESET
PD
Power Down Detect
REM
Remote Control
D43
AX-493/393 Detect
TPM
Tape Monitor
LEDTM
LED (Tape Monitor)
MUTE
Mute
RYSP
Speaker Relay
LSBY
LED (Power)
PS
Power
REM
Remote Control (Wakeup)
LEDP
LED (Phono)
LEDTM
LED (Tuner)
LEDC
LED (CD)
LEDM
LED (Tape)
LEDTP
LED (MD)
LEDA
LED (AUX)
S-CLK
T x D
H: 496, 396 L: 596
IN3
IN2
IN1
IN0
INT0
INT1
Key On Wakeup
Key On Wakeup

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Ax-396

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