Service manual
11-20 SAM4S ER-900/SPS-300 SERIES
AA
CTS3
TXD3
BB
1
6
6
CC
1
1
6
6
1
6
DK1
1 1
of
Rev
44
33
22
11
AA
DTR3
RTS3
DSR3
SGND
RXD3
BB
1
CC
6
1
DK1
SHA F T
VSERIAL(+5V)
COM#3_RXD
COM#3_RTS
C7100nF
USB_A
USB_D-
USB_D+
VDD33V
LAN
COM#3_RXD
COM#3_RTS
COM#3_CTS
USB_D-
USB_D+
16
CN2:P
12
CN2:L
10
CN2:J
USB_D-
6
CN2:F
4
CN2:D
SizeSize
COM#3
USB_A
USB SUB B'D
SPS-300.SCH
TITLE :
COM#2 LAN
MINI USB
DD
Sheet
22
VDD33V
COM#3_TXD
100nF
C12
VDD33V
COM#3_CTS
C2100nF
2012
L1
2012
L2
9 8
U3:D
74HCT05
11 10
U3:E
74HCT05
VDD33V
COM#3
13 12
U3:F
74HCT05
VDD50V
DK1
COM#3_TXD
VDD33V
10K
R5
14
CN2:N
8
CN2:H
USB_D+
2
CN2:B
VDD50V
VDD33V
Date
A3
A3
VUSB50V
COM#3
USB_A
2011.05.16
DD
COM#1
I/F B'D
LAN
COM#3
H.T JANG
Drawn by
44
33
11
FGND
10K
R6
VDD50V
VDD33V
VSERIAL50V(COM3&4)
FGND
1K
R9
5 6
U3:C
74HCT05
1.5K
R4
15K
R8
C4
470pF
1.5K
R2
NOPOP
100nF
C10
VDD50V
COM#3_CTS_IN
COM#3_RTS_OUT
6
CN1:F
COM#3_TXD_OUT
COM#3_RXD_IN
3
CN1:C
COM#4_CTS&VUSB_OCP
VUSB_ONOFF(5V)
15
CN2:O
11
CN2:K
9
CN2:I
COM#1
COM#4_RTS&USB_SELT
3
CN2:C
5
CN2:E
COM#2
I/F B'D
5
CN3:5
COM#3_RXD_IN
COM#3_RTS_OUT
File Name
SPS-300 232&USB I/F B'D
COM#1
I/F B'D
1.0
1 2
14
7
U3:A
74HCT05
COM#4_RTS&USB_SELT
3 4
U3:B
74HCT05
VDD50V
8
CN1:H
1
CN1:A
2
CN1:B
4
CN1:D
5
CN1:E
7
CN1:G
10K
R1
COM RS232 DRIVER
] ACTIVE HIGH
VUSB_ONOFF(5V)
VUSB CONTROL
VDD50V
VDD50V
100nF
C11
13
CN2:M
7
CN2:G
COM#4_CTS&VUSB_OCP
7
CN3:7
VUSB50V
COM#3_CTS_IN
COM#3_TXD_OUT
COM#3 (RJ45)
100nF
C5
100nF
C8
1
CN3:1
JOINT CONNECTOR
SERIAL+USB(RJ45&USB)
10K
R3
VDD50V
VUSB50V
VSERIAL50V(COM3&4)
COM#2
OPTION SERIAL B'D
VDD33V
100nF
C9
1K
R7
15K
R10
11
4Y
8
3Y
4
2Y
1
1Y
12
4E
6
3E
5
2E
13
1E
7
GND
10
4Z
9
3Z
3
2Z
2
1Z
14
VCC
U4
74HC4066
C1
470pF
C3
470pF
C6
470pF
3
CN3:3
VDD33V
100nF
C13
6
GND
7
VIN
4
ENB
5
OUTB
1
ENA
2
FLGA
8
OUTA
3
FLGB
U5
SP2526
VDD50V
4
CN3:4
Shin Heung Precision Co., Ltd.
USB SELECT(HOST / DEVICE)
1
CN2:A
CON-BOX;16P,2MM,2R,AN,FEMALE
8
CN3:8
2
CN3:2
1
SHAFT_HOLE;4PI,160MIL
U2
6
CN3:6
15
GND
9
R2OUT
12
R1OUT
11
T1IN
2
V+
16
VCC
10
T2IN
6
V-
8
R2IN
13
R1IN
14
T1OUT
4
C2+
1
C1+
7
T2OUT
5
C2-
3
C1-
U1
MAX3232