Sam4s ER-280 SERIES, Service Manual

Page: 72 / 88

10-6 SAM4S ER-280 SERIES
A
10
8
9
7
5
6
4
2
3
1
B C
5
of
Rev
4
3
2
1
A
B C
"H"=DISCON
2
CN4:B
5
CN4:E
8
CN4:H
NO
VFD LAT
VFD STB
VFD SCLK
GND
VFD SDIN
VDISP(+30V)
VF
SPOOLMOT(-)
SEN VFD DISCON
신호명
SP)
19
CN13:S
21
CN13:U
LD(6)
13
CN13:M
15
CN13:O
LD(0)
LD(2)
7
CN13:G
9
CN13:I
3
CN13:C
_RD
CS_LCD
D(1)
D(2)
D(4)
D(5)
D(7)
VOLT_ONOFF
BackLit GND
LD(7)
LD(1)
LD(3)
LCD_RS
LD(0)
LD(3)
LD(2)
LD(6)
LD(5)
용량 = 600mA
Size
최대 300mA
ER280 MAIN.SCH
ER-280 TITLE :
DD
11
Sheet
1.3
2
R61
4.7K
4.7K
R16
VDD50V
1
CN4:A
3
CN4:C
4
CN4:D
7
CN4:G
6
CN4:F
9
CN4:I
R1
470
VF
LD(4)
VLCD
11
CN13:K
17
CN13:Q
LCD_R/W
5
CN13:E
D(0)
D(3)
D(6)
LD(5)
VDD50V
LD(7)
LD(4)
LD(1)
VDD50V
A3
Date
CS_LCD
VDD50V
100nF
C61
R132
15K
VLCD
2007.02.28
DD
K.Y CHOI
Drawn by
4
3
1
VF VPRT VDISP
2 3
1
KSA1182-Y
Q5
2 3
1
Q3
KSA1182-Y
100pF
C72
R134
36K
DISPLAY_CLK
DISPLAY_LATCH
DISPLAY_DATA
SPOOLMOT(-)
SEN_DSPDISCON
VOLT_ONOFF
D(0:7)
VOUT = 1.215 X { 1 + (12K/4.7K)} = 4.317[V]
File Name
20
CN13:T
22
CN13:V
16
CN13:P
14
CN13:N
10
CN13:J
8
CN13:H
4
CN13:D
2
CN13:B
R73
4.7K
[ VFD DISPLAY BLOCK ]
[ VFD VF VOLTAGE CUT ]
100nF
C7
VFD / LCD BLOCK
18
CN13:R
12
CN13:L
(0x1C0000)
6
CN13:F
1uF
C73
VDD50V
VDD50V
2
3
1
MMBT2222A
Q4
11 10
74HC14
U10:E
2
GND
3
GND
1
IN
4
EN
6
GND
7
GND
5
ADJ
8
OUT
AME8807AEHA
U31
19
G
1
DIR
8
A7
7
A6
4
A3
5
A4
2
A1
6
A5
9
A8
3
A2
11
B8
10
GND
14
B5
13
B6
17
B2
16
B3
20
VCC
15
B4
12
B7
18
B1
U25
74ACT245
NOTE]SP) 신호임
NOTE] CAP 100pF
은 분배 저항값중
PULL-UP
값이
20K
를 넘으면 추가해야하므로 삭제
NOTE] VIN > (4.317V + 0.6V). 따라서 VIN > 4.917 보다 커야함 . 따라서 VIN = VCC(5V) 공급함 .
NOTE] VDROP = 0.6V(if VOUT>2.8). 따라서 VIN 은 (VOUT + VDROP) 커야하므로 최소 VIN 은 5.6V 보다커야함
NOTE]
이 블럭은
OPTION
임
. LCD
적용시만 실장
Shin Heung Precision Co., Ltd.
10
CN4:J
CON-BOX;10P,1.25MM,ST,12505WS
1
CN13:A
CON-BOX;22P,2MM,2R,ST
[ 16 X 2 LCD DISPLAY BLOCK - OPTION ]
[ LCD BACKLIT VOLTAGE CUT - OPTION ]
[ 16 X 2 LCD DISPLAY ]