CAS SW-1S Series User manual

SW-1S/1C/1W Service
Manual
1 2/28/2011
SW-1S/1C/1W SERVICE MANUAL
(Revision 0.1 / 2008.06.17)

SW-1S/1C/1W Service
Manual
2 2/28/2011
< Table of Contents >
1. Introduction ............................................................................................................................... 3
1.1. Preface .................................................................................................................................... 3
1.2. Precaution............................................................................................................................. 3
1.3. Specifications...................................................................................................................... 4
1.4. Key............................................................................................................................................. 6
1.5. Dimension.............................................................................................................................. 6
1.6. Sealing Method................................................................................................................... 8
2. Calibration................................................................................................................................. 10
2.1. General Calibration........................................................................................................ 10
2.1.1. C4 Setting ........................................................................................................... 11
2.1.1.1. C4-1 Setting................................................................. 11
2.1.1.2. C4-3 Setting................................................................. 11
2.1.2. SPAN Calibration Setting (C-3).............................................................. 12
2.1.3. Gravity Constant Value Setting (C-9)................................................ 12
2.1.4. Calibration factor Setting (C-10).......................................................... 13
2.1.5. Displaying Real A/D Value (C-5).......................................................... 13
2.1.6. Percent Calibration (C-7).......................................................................... 14
2.1.7. Battery Calibration (C-8)........................................................................... 14
3. The Schematics and Diagram......................................................................................... 15
3.1. System Block Diagram................................................................................................. 15
3.2. Circuit Diagram ................................................................................................................ 16
3.2.1. Main PCB.............................................................................................................. 16
3.2.2. Power Part (Main PCB)....................................Error! Bookmark not defined.
3.2.3. Rear Display PCB............................................................................................ 17
4. Exploded View......................................................................................................................... 18
5. Load Cell drawing.................................................................................................................. 20
6. Part Location............................................................................................................................ 21
6.1. Main PCB (Top) ................................................................................................................ 21
6.2. Main PCB (Bottom) ........................................................................................................ 22
6.3. Rear Display PCB (Top)............................................................................................... 23
7. Error Messages & Solution............................................................................................... 24
8. Part List....................................................................................................................................... 25

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1. Introduction
1.1. Preface
Thank you for purchasing of our CAS scale.
This scale has been designed with CAS reliability, under rigid quality control
and with outstanding performance.
WE hope that your departments enjoy with high quality of CAS product.
This manual will help you with proper operations and care of the SW-1S/1C/1W series.
Please keep it handy for the future references.
1.2. Precaution
Make sure that you plug your scale into the proper power outlet.
Place the scale on a flat and stable surface.
Plug into a power outlet 30 minutes before operations.
Keep the scale away from strong EMI noises may cause incorrect weight readings.
This scale must be installed in a dry and liquid free environment.
Do not subject the scale to sudden temperature changes.
Do not subject the platter to sudden shocks.
If the scale is not properly level, please adjust the 4 legs at the bottom of the
scale (turn legs clockwise or counterclockwise) so as to center the bubble of the
leveling gauge inside the indicated circle.

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1.3. Specifications
SW-1S/1C/1W-
02 SW-1S/1C/1W- 05 SW-1S/1C/1W- 10 SW-1S/1C/1W- 20 SW-1S/1C/1W- 30
Resolution
Capacity / e
Dual Interval
1 kg / 0.0005 kg
2 kg / 0.001 kg
Dual Interval
2.5 kg / 0.001 kg
5 kg / 0.002 kg
Dual Interval
4 kg / 0.002 kg
10 kg / 0.005 kg
Dual Interval
10 kg / 0.005 kg
20 kg / 0.01 kg
Dual Interval
15 kg / 0.005 kg
30 kg/ 0.01kg
Internal 1 / 60,000 1 / 60,000 1 / 60,000 1 / 60,000 1/60,000
External 1 / 2,000 1 / 2,500 1 / 2,000 1 / 2,000 1 / 3,000
Max. Tare - 0.9995 kg - 2.449 kg - 3.998 kg - 9.995 kg - 14.995 kg
Display 110 x 35[mm]/43" x 13.8" 5 digit LCD
Indicators STABLE, ZERO, TARE, g, kg, lb, oz, Low Battery
HI / OK / LO & PCS (SW-1C only)
Keys ZERO, TARE, HOLD(Hold Ver.), UNIT(Unit Ver.), MODE(SW1C), POWER
Functions
Weighing, WaterProof level IP66(SW-1W only)
Hold(Hold Ver.), Unit Conversion(Unit Ver.),
Counting-Counting SampleRange :
10~100,200,300,400,500 (SW-1C only)
Weight Comparison Function : hi, ok, low(SW-1C only)
Sleep Mode Function
Dimension 260(W) x 287(D) x 137(H)[mm] / 102(W) x 113(D) x 54(H)[inch]
278(W) x 317(D) x 141(H)[mm] / 109(W) x 125(D) x 56(H)[inch]
(SW-1W : WaterProof Type)
Platter Size 230(W) x 190(D)[mm] / 90.55(W) x 74.80(D)[inch]
247(W) x 195(D)[mm] / 97.24(W) x 76.77(D)[inch]
(SW-1W : WaterProof Type)
Weight 2.8kg
3.7kg(SW-1W : WaterProof Type)
Power 1.5V x 6 units (D size Battery) or 9V Adapter
Op.Temperature -10°C ~ +40°C / 14°F ~ 104°F
Options 9V Adapter 300mA, Rear Display, Stainless Tray (SW-1S, SW-1C)

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Minimum Voltage
Level The Battery About 5.5V
Operation time Approx. 500hours (Manganese battery)/
1000hours (Alkaline at 20°C /68°F)

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1.4. Key
Key Function
ZERO (-O-)
[Set]
To set zero point
To do [SET] key in the SETUP mode.
TARE To input or cancel the tare (the weight of container).
HOLD To make the weight of item stable. This weight is average value.
POWER To turn on or off.
1.5. Dimension
1.5.1. SW-1S/1C

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1.5.2. SW-1W

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1.6. Sealing Method

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2. Calibration
2.1. General Calibration
Pressing and holding calibration switch press [POWER] key to go to calibration mode.
User can move to other mode by using [ZERO] key in the calibration mode.
User also moves to other sub-modes for each mode by using [TARE] key.
Please simply follow below procedure to move to other mode.
Calibration Mode: Pressing and holding “Calibration Switch” press [POWER] key.
It displays “CAL-0” after “CAL”, and it blinks the version of scale three times.
Selecting menu: press [TARE].
ENTER(Setting) : [TARE] key
MODE Function
CAL 1 Display normalized AD
CAL 2 Display Keypad infomation-
CAL 3
Calibration
‘Zero’ key to select
‘ZERO’ ‘Zero’ key to proceed
‘Midup’ (Refer to table in 2.1.2. C-3) ‘Zero’ key to proceed
‘Full’ Full weight ‘Zero’ key to proceed
‘Middn’ (Refer to table in 2.1.2. C-3), ‘Zero’ key to proceed
CAL 4 Option Setting ( Refer to Table 1)
CAL 5 Display filtered Raw AD
CAL 7 % Calibration
CAL 8 Battery calibration
CAL 9 Gravity constant
CAL 10 Set calibration factor
Refer to 2. 1. 4
CAL 11 Set nation(00 : OIML , 01 : NTEP , 02: KOREA)

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< Modes >
2.1.1. C4 Setting
2.1.1.1. C4-1 Setting
BIT 6~7 Initial Zero range
3 5%
2 10%
1 3%
0 2%
BIT5 Last digit enable 0 Disable
1 Enable
BIT4 Key zero percent 0 ±3% key zero percent
1 ±2% key zero percent
BIT 2~3 Successive tare
3 (+), (-) All Direction successive Tare
2 (+) Direction successive Tare
1 (-) Direction successive Tare
0 One Time tare
BIT0~1 Zero mark type
0 Gross zero indication
1 Net zero indication
2 Both(gross and net) zero indication
2.1.1.2. C4-3 Setting
BIT7 Dot Type
0 "." dot
1 "," comma
BIT6 Use Preset tare 0 Don't use
1 Use
BIT5 Use Back light 0 Don't use
1 Use
BIT4 Use Head message 0 Don't use
1 Use
BIT3 Use gram
0 Don't use
1 Use
BIT2 Use oz
0 Don't use
1 Use
BIT1 Use lb
0 Don't use
1 Use
BIT0 Use Kg
0 Don't use
1 Use

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2.1.2. SPAN Calibration Setting (C-3)
Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL
1” message.
Press [Tare] / [Mode] to display “CAL-3”.
Press [Zero] key and then it displays “zero” message.
Press [Zero] key and then it displays “midup” message
Load middle up weight (Refer to table below) on the platform
Press [Zero] key and then it displays “FULL ” message
Load full weight on the platform
Press [Zero] key and then it displays “middn” message
Load middle down weight (Refer to table below) on the platform
Press [Zero] key and then it display “CAL 3” message
Press [Power] key to save & switch off
Table for Cal weights
Full Half weight
20 10
10 5
5 2
2 1
2.1.3. Gravity Constant Value Setting (C-9)
Current gravitational Acceleration value is set to 9.7994 m/s2 .
Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL-1” message.
Press [ZERO] to display “C-9”.
Press [TARE] key, and then “ G-1“ message and “9.7994” will be shown. The first digit,”9” will blink.
Input a gravitational acceleration value by using [ZERO] key.
Press [TARE] key, and then “G-2“ message blinks.“9.7994” will be shown. The first digit,”9” will blink.
Input a gravitational acceleration value by using [ZERO] key.
Press [TARE] key to save the gravitational acceleration value, and “C-9 ” message will be shown.

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2.1.4. Calibration factor Setting (C-10)
Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays
“CAL-1” message.
Press [MODE] or [TARE] to move to display “C-10”.
Press [ZERO] key, and then “UNIT “message and “0” will be shown. The first digit,”0”
will blink. It means calibration unit is “kg” (0 : kg, 1 : lb)
Input a calibration unit by using [MODE] key.
Press [ZERO] key and then “CAPA“message blinks. “0015” will be shown. The first
digit,”0” will blink. It means a full-capability is “15 (calibration unit, kg or lb)”
Input a capability by using [MODE] key to change value [TARE] key to move the right.
Press [ZERO] key, and then “MId“message blinks. “0005” will be shown. The first
digit,”0” will blink. It means a mid-capability is “05 (calibration unit, kg or lb)”
Input a capability by using [MODE] key to change value [TARE] key to move the right.
Press [ZERO] key, and then “W-dP “message blinks. “3” will be shown. The first
digit,”3” will blink. It means a weight decimal point is “3 (will display 0.000)”
Input a weight decimal point by using [MODE] key.
 Press [ZERO] key, and then “1d “message blinks.“0.005” will be shown. The third
digit,”0” will blink. It means a division is “0.005 (calibration unit, kg or lb)”
Input a division by using [MODE] key to change value [TARE] key to move the right.
Press [ZERO] key, and then “dual “message blinks. “1” will be shown. The third
digit,”1” will blink. It means a dual interval is disable. (0 : disable, 1 : enable)”
Input a dual interval enable by using [MODE] key.
Press [ZERO] key, and then “TARE “message blinks. “0” will be shown. The third
digit,”1” will blink. It means a dual interval is disable. (0 : disable, 1 : enable)”
Press [ZERO] key to save the calibration factor and “C-10” message will be shown.
Turn off scale to save
2.1.5. Displaying Real A/D Value (C-5)
Display Raw AD

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2.1.6. Percent Calibration (C-7)
(1) Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL 1”
message.
(2) Press [ZERO] to display “CAL-7”.
(3) Press [TARE] key and then it displays “per 0 ” message. Select the percent value using
the
[numeric] key. You can choose 10~90 percent. (Last digit of percent must be 0.)
(4) Press [TARE] key and then it displays “zero” message
(5) Press [TARE] key and then it displays “pspan ” message
(6) Load choice percentage weight of full weight on the platform
(7) Press [TARE] key and then it displays “CAL 7” message
2.1.7. Battery Calibration (C-8)
(1) Pressing and holding “Calibration Switch” press [POWER] key.
After “CAL” message blinks three times and shows the version of scale, it displays “CAL 1”
message.
(2) Press [ZERO] to display “CAL-8”.
(3) Press [TARE] key and then it displays voltage of battery.
(4) Change the jumper-pin of main PCB, ‘BAT’ to ‘+5V’.
(5) Press [ZERO] key two times and then Press [-] key two times.
And then it display ‘500’
(6) Change the jumper-pin of main PCB, ‘+5V’ to ‘BAT’.
(7) You can see the calibrated voltage of battery.

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3. The Schematics and Diagram
3.1. System Block Diagram

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3.2. Circuit Diagram
3.2.1. Main PCB
Title
Size Document Number Rev
Date: Sheet of
6100-PSW-0000
A
SW1S1C (MODULE VER.)
A3
11Tuesday, June 17, 2008
L7
1 2
SIG_IN+
0
+3.3V
SIG_IN-
0
+5V
BUZZER
LCD_CS
BAT_CHK
+5V
+3.3V
LCD_WR
+3.3V
ADAPTOR JACK
3
2
1
LCD_DATA
0
C10
0.1uF
+
C11
330u/25v
+
C8
100u/16v C9
0.1uF
U3
XC6204C332MR
VIN 1
VSS
2
CE 3
VOUT
5
+3.3V
00
C1
1nF
LCD_WR
0
D1
KDS184
2 1
3
S1
ON/OFF
+3.3V
POWER_CON
R8
10k
R3 100
MODULE CONNECTOR
PART
C12
0.01uF / 3kv
POWER_CON
R5 100
C3
1nF
BUZZER
POWER_CHK
0
BUZZER1
R4 100
C2
1nF
R6 100
0
LCD PART
SEG15 SEG2
SEG16 SEG3
0
PSEN
SEG4
SEG7
JP1
1 2
SEG5
SEG17
R2
10K
LCD1
SW-II LCD
C0 1
C1 2
C2 3
C3 4
STABLE/L/O/K 6
1F/1G/1E/1D 7
1A/1B/1C/ 8
/ /1P/1Z 9
S2/S3/S4/HI 5
2A/2B/2C/ 11
/ /2P/2Z 12
3F/3G/3E/3D 13
3A/3B/3C/ 14
/ /3P/3Z 15
4F/4G/4E/4D 16
4A/4B/4C/ 17
/ /4P/4Z 18
5F/5G/5E/5D 19
5A/5B/5C/ 20
OZ/LB/ K/ G 21
2F/2G/2E/2D 10
PCS 22
SEG7
SEG6
SEG10
SEG9
SEG8
POWER_CHK
SEG13
SEG12
SEG11
+5V
SEG14
SEG16
SEG15
C7
0.1uF
SEG17
SEG4
SEG5
COM0
COM2
SEG3
COM1
COM3
SEG2
LCD_CS
SEG0
SEG1
SEG6
R7 2.2K
3 : RED
2 : GREEN
1 : BLUE
PROGRAM PART
U2
HT1621B-48 SSOP
SEG7 1
SEG6 2
SEG5 3
SEG4 4
SEG3 5
SEG2 6
SEG1 7
SEG0 8
CS 9
RD 10
WR 11
DATA 12
VSS 13
OSCO 14
OSCI 15
VLCD 16
VDD 17
IRQ 18
BZ 19
BZ 20
COM0 21
COM1 22
COM2 23
COM3 24
SEG8
48
SEG9
47
SEG10
46
SEG11
45
SEG12
44
SEG13
43
SEG14
42
SEG15
41
SEG16
40
SEG17
39
SEG18
38
SEG19
37
SEG20
36
SEG21
35
SEG22
34
SEG23
33
SEG24
32
SEG25
31
SEG26
30
SEG27
29
SEG28
28
SEG29
27
SEG30
26
SEG31
25
SEG9
SEG8
SEG11
SEG10
0
COM0
SEG13
COM1
SEG12
R11 10
TARE
COM2
SEG0
SEG14
COM3
SEG1
LOADCELL PART
KEY & BUZZER PART
0
TP2
J5 1
2
3
4
5
SIG+
EX-
EX+
FG
SIG-
L3
1 2
0
0
TP1
L6
1 2
L5
1 2
L4
1 2
S2 ZERO
ZERO
S3 TARE
S4 HOLD
ZERO
LCD_DATA
C4
0.1uF
+
C5
100u/16v C6
0.1uF
U1
XC6204C502MR
VIN 1
VSS
2
CE 3
VOUT
5
+5V
TARE
CAL PART
0
BAT_CHK
R9
100k
HOLD
J4
BAT
1
2
3
0
J1
1
2
J3
B+
1
2
R1
4.7k
CAL
JP2
BAT, +5V change
REGULATOR PART
J6
B-
1
2
RS232 CONNECTOR
PART
0
Tx
R10
1k
0
L1
1 2
L2
1 2
L 102S
Rx
L 102S
ONE_MODULE1
OneModule
A_Vcc
1
A_GND
2
Bat_chk
3
P1.6
4
P1,7
5
Rx
6
Tx
7
P3.2
8
P3.3
9
P3.4
10
P3.5
11
P3.6
12
P3.7
13
P2.0
14
P2.1
15
P2.2
16
P2.3
17
P1.1
18
AIN+ 36
AIN- 35
A_GND 34
P1.0 33
P0.0 32
P0.1 31
P0.2 30
P0.3 29
P0.4 28
P0.5 27
P0.6 26
P0.7 25
PSEN 24
I2C_SDA 23
I2C_CLK 22
D_Vcc 21
D_GND 20
RTC_Power 19
PSEN
Rx
Tx
HOLD
J7
1
2
3
4
5
6
7
8
9
10
11
J8
1
2
3
4
5
6
7
8
9
10
11
RED
BLACK
COM1
COM3
COM2
SEG2
COM0
SEG5
SEG4
SEG3
SEG1
SEG0
SEG6
SEG8
SEG7
SEG11
SEG10
SEG9
SEG14
SEG13
SEG12
SEG16
SEG15
SEG17
CAL
Q1
KTA1298
0
J2
1
2
3
4
SIG_IN+
+3.3V
SIG_IN-
+5V
+3.3V
L8
1 2

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3.2.2. Rear Display PCB
Title
Size Document Number Rev
Date: Sheet of
6110-PSW-0000-0 0
SW-1S/1C/1W REAR DISPLAY PCB
A
11Tuesday , June 17, 2008
SEG2
SEG5
SEG4
SEG3
LCD1
SW-II LCD
C0 1
C1 2
C2 3
C3 4
STABLE/L/O/K 6
1F/1G/1E/1D 7
1A/1B/1C/ 8
/ /1P/1Z 9
S2/S3/S4/HI 5
2A/2B/2C/ 11
/ /2P/2Z 12
3F/3G/3E/3D 13
3A/3B/3C/ 14
/ /3P/3Z 15
4F/4G/4E/4D 16
4A/4B/4C/ 17
/ /4P/4Z 18
5F/5G/5E/5D 19
5A/5B/5C/ 20
OZ/LB/ K/ G 21
2F/2G/2E/2D 10
PCS 22
SEG6
SEG9
SEG8
SEG7
SEG12
SEG11
SEG10
SEG14
SEG13
SEG17
SEG16
SEG15
COM2
COM1
COM0
SEG0
COM3
SEG1
J1
1
2
3
4
5
6
7
8
9
10
11
J2
1
2
3
4
5
6
7
8
9
10
11
BLACK
RED
COM1
COM3
COM2
COM0
SEG4
SEG3
SEG2
SEG6
SEG5
SEG1
SEG0
SEG7
SEG9
SEG8
SEG12
SEG11
SEG10
SEG15
SEG14
SEG13
SEG17
SEG16

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4. Exploded View
4.1. SW-1S/1C

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4.2. SW-1W

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5. Load Cell drawing
25
112
15
112
SW
(spring element)
2090501 00