Charder MS-6121R User manual

MS-6121R
SERVICE MANUAL

1
TABLE OF CONTENTS
PRECAUTIONS ...................................................................................................................................... 2
GENERAL INFORMATION ...................................................................................................................... 2
GENERAL INSPECTION.......................................................................................................................... 2
TROUBLESHOOTING ............................................................................................................................. 2
SPECIFICATION..................................................................................................................................... 3
OVERLAY / PANEL ................................................................................................................................ 3
KEY DESCRIPTION ................................................................................................................................ 4
ERROR MESSAGE .................................................................................................................................. 4
LCD FORMAT ........................................................................................................................................ 5
WIRING................................................................................................................................................. 6
LOAD CELL............................................................................................................................................ 8
CALIBRATION & SETTING ORIGIN GRAVITY PROCEDURE...................................................................... 9
SERVICE MENU CONFIGURATION OF MS 6121R .................................................................................. 10
COMPANY SETTINGS........................................................................................................................... 11
TROUBLE SHOOTING .......................................................................................................................... 12
SCHEMATICS—MAIN BOARD .............................................................................................................. 13
LAYOUT .............................................................................................................................................. 15
MS 6121R PARTS & ASSEMBLY ........................................................................................................... 16
MS 6121R SPARE PART LIST ............................................................................................................... 17
INSTRUCTION FOR REPLACING BATTERY ........................................................................................... 18
INDEX ................................................................................................................................................. 19

2
PRECAUTIONS
READ t e service manual BEFORE operating or servicing t is equipment.
FOLLOW t e instructions carefully.
Keep t is manual for future reference.
Don’t allow untrained personnel to operate, clean, inspect, maintain, service or tamper
wit t is equipment.
ALWAYS DISCONNECT t is equipment from t e power source before cleaning or
performing maintenance.
Note: If t e unit as been stored or transported in below freezing temperatures, allow t e
unit to warm up to room temperature before turning on power.
PAY SPECIAL ATTENTION TO ALL “WARNING” SYMBOLS
GENERAL INFORMATION
Before connecting or disconnecting any internal electronic components or interconnecting
wiring between electronic equipment, always remove power and wait at least 30 seconds.
Ignoring any of t ese precautions could damage or cause destruction to t e equipments.
GENERAL INSPECTION
Inspect t e scale assembly by c ecking t e following:
Are t ere any unusual wear points, pat s, or marks on t e weig ing Surface?
Is t e instrument cable damaged or binding t e scale?
Has any debris or material built up under or around t e platform t at could in ibit
movement?
Visually inspect t e load cells and levelling feet for signs of unusual wear.
TROUBLESHOOTING
GENERAL:
If t e scale does not operate properly, find out as mus as possible about t e problem.
Determine w et er t e problem is constant or intermittent. Be aware t at problems can
be caused by mec anical or electrical influences.
W ile troubles ooting MS 6121R scale, c eck for t e following:
Water
Corrosive materials
Uneven floor
Strong vibrations or wind currents
P ysical damage to t e scale platform or ousing.
IMPORTANT ELECTRICAL WARNING

3
SPECIFICATION
MODEL#
MS 6 2 R
Capacity
Division 250kg x 0.1kg 550lb x 0.2lb
Accuracy ±200g ±0.4lb
Units of Measure kg; lb
Function keys
ON/OFF, UNIT, TARE, HOLD/BMI,
Channel switch
Stabilisation time 1-2 seconds
Operating temp. 5°C - 35°C
DISPLAY: four 1.5V AA size batteries & Adaptor
Power supply
PLATFORM: four 1.5V AA size batteries & Adaptor
Indicator display 1.0” LCD display wit 5 active digits
Wireless type Infrared 2.4G
Wireless channels 3 c annels
Dimensions 348.5 x 355mm
*MS6 2 R serves three wireless platforms at a time. Press channel switch button to change
platform and channel to start measurement.
OVERLAY / PANEL

4
KEY DESCRIPTION
1. : To power ON and OFF t e scale.
2. : Press to tare weig t.
3. : Press t is key to lock t e weig t value before or w ile weig ing. To disable t e weig t lock
(Hold) function, press HOLD key again or pick up t e weig t (Tare weig t also) from t e platform;
display will come to zero weig ing
4. : Press to c ange measuring unit between kg and lb.
5. change channel
Press to c ange wireless c annel.
ERROR MESSAGE
Error Message Description Solution
Indicator Low battery
Deck Low battery
Please replace batteries or plug t e AC
adaptor for operation
Overload:
T e total load exceeds t e
maximum capacity of t e scale
Please reduce t e load and try again
Counting error (too ig ):
Indicates t at t e signal from t e
load cell/s is too ig
T is error is normally caused by a serious
fault on t e scale suc as faulty load cell or
wiring. Please contact t e local service
representative
Counting error (too low):
Indicates t at t e signal from t e
load cell/s is too low
T is error is normally caused by a serious
fault on t e scale suc as faulty load cell or
wiring. Please contact t e local service
representative
Zero count is over calibration zero
range +10% w ile power on Please re-calibrate t e scale
Zero count is under calibration zero
range -10% w ile power on Please re-calibrate t e scale
EEPROM error (Indicator)
EEPROM error (deck)
T is error is normally caused by a serious
fault on t e scales suc as a faulty load cell
or wiring. Please contact t e local service
representative.

5
LCD FORMAT
ACTION:
Problem- T e scale s ows non-complete segments w en power on.
Solution:
•Turn off t e scale and take out t e batteries from t e scale.
•C eck LCD pin. (Please refer to above LCD FORMAT)
For instance, if t e top left arrow (S1) disappears, t en c eck pin 1 and pin 20.
•C eck w et er LCD pins are soldered properly or not.

6
WIRING
ACTION:
1. Remove battery from t e scale.
2. Un-screw t e lower ousing.
3. Remove upper ousing.
4. Make sure t at all wire connectors are well and t at no insulation material is touc ing
t e soldering contacts.
5. Make sure t at all wires are connected to t e correct points.
Wiring Connector
RED (solder pad “E+”)
BLACK (solder pad “E-“)
GREEN (solder pad “S+”)
Load cell wiring
WHITE (solder pad “S-“)
Battery Wiring CN 3
Power Wiring CN 2
Main Board CH-0838 (Indicator)
CN9: Control panel connector
CN11&2: Battery connector

Junction Board CH-08 0 (Deck)
Load cell Connector
Load cell White wire
Red wire Black wire
sensor LW1 LR1 LB1
sensor 2 LW3 LR2 LB2
sensor 3 LW2 LR3 LB3
sensor 4 LW4 LR4 LB4
CN1: AC Jack Connector
Battery Co
nnector
Load cell
Connector

8
LOAD CELL
C eck load cell for proper bridge resistances as below.
MODEL MEASURING POINTS RESISTANCE
E+ (RED) to E- (BLACK) 700 ± 15 o ms
AL-1380
S+ (GREEN) to S- (WHITE) 700 ± 15 o ms
ACTION:
1. Remove power (adaptor pin) from t e system, c eck load cell for proper resistances.
2. If load cell fails t e above tests, replace load cell.
3. If load cell passes t e above tests and as no visible damage, please re-calibrate t e
scale.

9
CALIBRATION & SETTING ORIGIN GRAVITY PROCEDURE
In weig ing mode long press UNIT key 6 sec until “CAL” followed by t e weig t value of
t e required calibration weig t in display. “LoAd” is displayed alternatively.
Carefully place t e required adjustment weig t (200kg or 500lb) in t e centre of t e
weig ing plate.
Press TARE key, adjustment is started.
Wait until t e stability display appears after t at t e adjustment is finis ed.
T e balance will automatically return to weig ing mode upon successful completion of
t e adjustment and will display t e weig t of adjustment weig t.
Take away adjustment weig t and re-power on t e scale.

10
SERVICE MENU CONFIGURATION OF MS 6121R

11
COMPANY SETTINGS
T e setting of MS6121R must be set to following default settings:
Function Description Default
(Units): Kg/ Lb/ lb:oz kg, lb
(Graduations): 1500d/2000d/2500d/3000d/6000d 2500d
(Auto off time) 120/180/240/300/off seconds 180
(Hold Range): 2d/5d/10d/15d 5d
(Gravity) on/off off
(Tare-IR): on/off off

12
TROUBLE SHOOTING

13
SCHEMATICS—MAIN BOARD
Main Board (Indicator) CH-0838

14
Junction Board (Deck) CH-0810

15
LAYOUT
PRIMARY AND SECONDARY SIDE OF MAIN BOARD CH-0838
PRIMARY AND SECONDARY SIDE OF JUNCTION BOARD (Deck) CH-08 0
EEprom

16
MS 6121R PARTS & ASSEMBLY

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MS 6121R SPARE PART LIST
CED P/N DESCRIPTION DRAWING NO.
CE010001000017
CE010001000017CE010001000017
CE010001000017 Indicator (DP4100 RF) DP4000
CE010002000034
CE010002000034CE010002000034
CE010002000034 Base MS6121R
060014000918
060014000918060014000918
060014000918 Overlay for ase NP-5801
060014000921
060014000921060014000921
060014000921 Overlay for indicator NP-5711
020018000076
020018000076020018000076
020018000076 ADAPTOR (USA Type) AD-0484 (52739-0595)

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CAUTION:
Always connect the AC adaptor pin to the adaptor plug in slot before
connecting to the main power supply. Please disconnect the
adaptor from main power supply first.
INSTRUCTION FOR REPLACING BATTERY
INSTALLING BATTERY IN THE PLATFORM.
You can also use the adaptor as power supply.
INSTALLING BATTERY IN THE DISPLAY
You can also use the adaptor (standard) as power supply.
Remove battery
compartment cover
Place new 4 * AA 1.5V batteries into the
battery compartment. Watch the side of
battery compartment and install it.
Install battery compartment cover.
Installing 4 AA 1.5V batteries

19
INDEX
1. List of Tables.
•Specification.
•Error Message.
•Wiring.
•Load Cell Resistance.
•Calibration Procedure.
•Approval Scale Company Settings.
2. List of Pictures.
•Overlay/Panel.
•LCD Format.
•Load Cell.
•Service Menu Configuration.
•Test Pin Location.
•Load Cell Connector.
•Trouble S ooting Tree.
•Sc ematics Main Board.
•Layout
•MS 6121R Parts & Assembly.
•Instructions for C arging and Connecting.
•Instruction for replacing battery.
3. List of Spare parts.
4. Revision S eet
Release
No.
Date Revision Description
Rev. 0 Dec/22/11
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