Sam4s ER-900 Series, Service Manual

Page: 107 / 132

SAM4S ER-900/SPS-300 SERIES 10-1
10 Block Diagram
IN
VPH
+19
V
+3
.3
V
+
nR
D
SDA
GPI
O
XI
N
+3.
3
V +5
V
ME
M
C
E
1 1
KEY
MO
DE
DAT A(7 :0 )
DK
1
LA
N
PORT
PORT
nC
S
(4
M
B
IT
)
OPT
KEY
CO
M#
3
CO
M#
4
KEY
1
COM
#
1
COM
#
2
nR
D
nW
R
DK
1
LA
N
RE CEIP JO URNAL
OU
T
DR AWER #1 DRAW ER # 2
SPOOL
F
ISC
AL
-
+24
V
DAT
A
(7
:0
)
VPRT
(+
9
V)
SCL K
SEG
(8LINE )
DIG IT
(8LI NE)
(TR )
6 6
VBAT
LC D DATA (7 :0 )
(2lay er) (2la ye r) RJ11
K
6
T
400
8
SR
AM
#
1
OPT
SD_ CD
SD_W P
SERIAL( 3,4 ) SERIA L(1,2)
SD_DA TA
SD_ CM D
74H CT 05
1
ADD(
2
3
:0
)
RJ45
DSU B9
LAN
+
PR IN TE R (C AP D2 45 or LTP D 24 5)
PR IN TE R (C AP D2 45 or LTP D 24 5)
BA CK LIT C OLO R(R ,G ,B) BA CK LIT C OLO R(R ,G ,B)
LC D_R/ W , LCD_ RS , CS _L CD , / RD
74ACT 24 5
MC R_RC P2
MC R_RD D3
MC R_RD D2
DM 9161 B
DRA WE R
DK1(OPT)
or
JO
IN
T B'
D
RJ1 1
DW
R#
2
COM
P
DW
R#
1
A,
A
, B
,
B
VPH
+5
V
VP
R
T
VP
R
T
250
V/
3.
15
A
19
V/
2.
5
A
F
ISC
AL
B'
D
nW
R
CS FI
SCAL
GPI
O
DRA
W
E
R #
2
DRW
#
1
GPI
O
DRA
W
E
R #
1
CO
M
P
DRW
#
1
O
S
C(2
K
HZ)
BU
Z
Z
E
R
M
A
T
[0:
3]
GPI
O
GPI
O
(B
D
6
380
E
F
V)
TP
H
SI
GN
A
L
GPI
O
(B
D
6
380
E
F
V)
M
O
T DRI
V
E
R
GPI
O
GPI
O
GPI
O
nI
N
T
0
IR
Q PF
AI
L
GPI
O
SPOOL
R
E
SET
IC
nRE
SET
RE
G
U
L
A
T
O
R
R
A
IS
ED
(M
A
X
8
4
KE
Y
)
VBAT
VBAT
XO
U
T
GP
IO
RTC I
C
[ IN
T
E
R
N
A
L
T
Y
P
E
]
LP
C2470
VBAT
BA
T
T
E
R
Y
FN
D
REA
R
FND
(8
se
g/
9d
ig
it
)
CO
M#3
CO
M#4
F
L
AT
(M
AX 1
4
0
KE
Y
)
nR
D
74
LV
54
1
DAT
A
(7
:0
)
/C
S
ADDR ADDR ADDR
74L
V
138
DE
CO
DE
R
CS_
L
CD
GP
IO
/C
S
nW
R
nR
D
_C
S
GP
IO
nI
N
T
3
GP
IO
GP
IO
GP
IO
MOS
I
MI
S
O
SD
_
W
P
SD_
C
M
D
SD_DA
T
A
GP
IO
GP
IO
D(
15
:0
)
D
AT
A(
15:
0
)
CL
K/
RX/
T
X/
CO
L
/CRS
GP
IO +5
V
L C D
COM
#
1
COM
#
2
I/F
B
'D
M
C
R
R
EAD
ER
C
S
_F
LASH
(1
6M
B
IT
)
+5V
V
L
CD(
BACKLI
T
)
V
SERI
A
L
RJ45
CO
M
#
3
(E
R-
9XX)
DA
L
L
A
S
AD
D
IM
A
T
DAL
L
AS_
DOUT
DALL
AS_DI
N
nC
S
(1
6M
B
IT
)
VBAT
L
C
D
SE
RI
AL
&
I
R
C
OPT
(1 -S TATION)
AU TOCUT
OPTION
COM
P
A,
A
, B
, B
OPTION
T
P
H THERM
ISTER
FUSE
MA
IN B
'D
TRA
N
S
PO
W
E
R
23
0V/
5
0H
Z
12
0V/
6
0H
Z
PW
R
B'
D
F
ISC
AL
B'
D
I/F
GPI
O
C
O
M
P
SEN
S
DRI
V
E
R
GPI
O
M
O
T DRI
V
E
R
ADC
DRI
V
E
R
/R
E
SET
AM
E8
5
0
0
KEY SC
AN
32.
7
6
8
KH
Z
RTC
I
C
DR IVER
+3
V(
VBAT
)
RE
TURN
M
O
DE
K
E
Y
/R
ESET
_
C
S_KBDM
O
DE
nI
N
T
2
GP
IO
S
D
_
C
D
A(
23:
0
)
GP
IO
ADD(
2
3
:0
)
RXD/
T
X
D/
DT
R/
DS
R
SCK
S
D_CLK
OPTION
F
L
ASH
A
M
29F
1
6
0
UAR T(0 ~3 )
MAX232
DSUB9
I/
F
B
'D
U
SB_
A
SD CARD
(S
D CO
N
N
E
C
TO
R)
SD _CLK
(E
R
-9XX)
DA
L
L
A
S
A
DDI
M
A
T
R
1
LV
041
4D
SR
AM
#1
6 6
19
2*
64
F
R
O
N
T
LCD
(2la ye r) (2la ye r)
I/
F
B
'D
SERIA L(3,4)
SERIA L(1,2)
IRC
+
(2 -S TATION)
1-S TA TIO N o r 2 -S TA TIO N
TH ERM AL PR IN TE R
PR IN TE R (C AP D2 45 or LTP D 24 5)
MC R_ CPD2 3
MC R_RC P3
BACK LIT CO LO R(R ,G ,B)
RJ11(O PT)
ME
M S
IZ
E
MA
X
2MB
IT
CO
NTRO
L
CI
RC
UI
T
PAPE
R
HO
M
E
PO
SI
TI
ON SENS
O
R
C
L
K
,D
A
TA
,n
L
A
T,
n
S
TB
G
P
IO
/
S
S
P
PRI
N
T
E
R DI
S
C
ON SENS
PAPER CO
VER OPEN SENSO
R (
R
/J
)
PAPER END SE
NSOR (
R
/J
)
ON
/OF
F
RE
G
U
L
A
T
O
R
RE
CTI
F
IE
R
RE
G
U
L
A
T
O
R
AC1
20V
/
60
HZ
CO
M#
3
U
SB_
A
[ KE
Y
BO
AR
D
]
7
4LV
1
3
8
DE
CO
DE
R
KEY SCAN
CS_
F
IS
DAT
A
_
R
D
CS_
F
IS
DAT
A
_
W
R
CS_
F
ISADDL
_
W
R
CS_
KBDM
O
DE
CS_
F
ISPORT
(5
7
4
)
MCR_
RDD3
MCR_
RCP3
MCR_
RDD2
MCR_
CPD2
3
OPT
ION
DAL
L
AS_
DI
N
DAL
L
AS_
DO
UT
UART(
0
~
4
)
ET
HERNET
(R
M
II)
(SPS-
3XX)
SER
IA
L & I
R
C
SER
IA
L
L C
D
DATA(
1
5
:0
)
(wit
h
6
-Co
lo
r B
/L
)
I/F
B
'D
+
3
.3
V
(VCC)
AC2
30V
/
50
HZ
M
C
R CO
NNE
CTO
R
CS_
F
ISADDH_
W
R
MCR_
RCP2
(E
R
-9
X
X
)
(SPS
-3
XX)
2L
IN
E FRONT LC
D
(w
it
h BL
U
E
B/
L)