AVA WEIGH 334PCSP30 User manual

01/2022
334PCSP30
30 lb.
334PCSP60
60 lb.
334PCSP30T
30 lb. w/ Tower
334PCSP60T
60 lb. w/ Tower
Digital WiFi Price Computing Scales
with Thermal Label Printer
USER MANUAL

READ & UNDERSTAND ALL OPERATING INSTRUCTIONS BEFORE USING THIS PRODUCT
KEEP THIS MANUAL FOR FUTURE REFERENCE. FOR USE IN DRY ENVIRONMENTS ONLY.
• Allow sufficient warm up time after turning the scale on to allow the internal components and
load cell to have enough time to stabilize and balance heat.
• Avoid using in extreme heat or cold. For best results, keep away from wet environments or
areas of intensive temperature, humidity, and pressure changes.
• For accurate results, read the scale immediately after the reading is stable. There may be minor
fluctuations after an extended time.
• When storing the scale for extended periods, the battery must be charged every 90 days to
avoid premature performance degradation. If the operating time is no longer acceptable even
after recharging, the battery must be replaced.
• Electronic scales are precision instruments. Do not operate near cell phones, radios, computers,
or other electronic devices that emit radio frequencies that may cause unstable readings.
GENERAL & SAFETY INFORMATION
TABLE OF CONTENTS
1.
.................................................................................1
..............................................................................................................2
• Features Summary..........................................................................................................................................................2
...................................................................................................................3
• Installing the Scale ..........................................................................................................................................................3
• Installing the Thermal Label Paper .........................................................................................................................4
• Label Paper.........................................................................................................................................................................5
• Keyboard .............................................................................................................................................................................6
Overall Appearance...................................................................................................7
 ................................................................................................7
• Weighing & Pricing .........................................................................................................................................................8
• Tare Operation..................................................................................................................................................................9
• Discounts.............................................................................................................................................................................9
• Price Changing..................................................................................................................................................................9
• Choosing Unit of Weight ..........................................................................................................................................10
• Charging by Piece.........................................................................................................................................................10
• Price Tag Printing..........................................................................................................................................................10
• Quick Copy......................................................................................................................................................................10
• Automatic Fast Packaging........................................................................................................................................11
• Common Uses for the Operation Button......................................................................................................... 11
 ........................................................................................... 12
...................................................................................................... 13
 ...................................................................................................... 17
.......................................................................................... 20
Warranty................................................................................................................... 21

• When using the Ethernet interface, it is recommended that a shielded cable is used
with the scale.
• The price look-up codes (PLU) are initiated by the touch of a button.
• Items can be programmed through the 112 direct buttons on the face of the scale,
or the 224 available hotkeys, which are a combination of keys on the scale face.
SPECIFICATIONS
2.
334PCSP30/30T 334PCSP60/60T
MIN WEIGHT 40g 100g
MAX WEIGHT 30 lb. 60 lb.
WEIGHT RANGE 15 lb. x 0.005 lb.
30 lb. x 0.01 lb.
30 lb. x 0.01 lb.
60 lb. x 0.02 lb.
ACCURACY GRADE NTEP Class III
OIML R76/2006-A-NL1-18.12
TEST SPECIFICATIONS OIML R 76-1(2006) and EN 45501:2015
LCD DISPLAY
Info/Weight: 5 byte (APHA)


Unit of weight: lb., kg, oz., g
POWER
Power Supply: 100V-240V, 50/60Hz



HUMIDITY RANGE 
SCALE DIMENSION  
PLATTER SIZE  
FEATURES SUMMARY

1. Unbox the machine and components
2. Place the scale on a flat surface
3. For the 334PCSP30T/ 334PCS60T models,
locate the tower indicator and identify the
cable that runs down the length of the pole
(Fig. 1). Once located, connect the wire to its
counterpart (Fig. 2) on the back of the scale.
(The cable connector should be located
inside the pole stand fastened to the back of
the scale)
4. Once this cable has been connected, slide
the indicator in the allotted position on
the back of the scale and use the provided
screws to fasten the indicator pole in place.
(Fig. 3)
5. Once the pole has been secured, remove the
weighing platform and locate the leveling
bubble (Fig. 4) in the front left-hand side of
the scale (this can be found if you are looking
at the scale face).
6. Once the leveling bubble has been located,
ensure that the bubble is in the middle of the
black ring for optimal weighing and accuracy.
If not, use the adjustable feet on the bottom
to level the scale. (Fig. 5)
7. Once you have ensured that the scale is
level, you can power the scale on using the
ON / OFF switch on the bottom of the scale
next to the adapter connection.
8. After connecting the power supply, switch

of the scale. The screen will then show the
logo, edition number, IP address, and a self-
test countdown. Then the scale will be ready
to use.
NOTE: To ensure the scale works properly,
do not press any buttons or put anything on
the scale while self-testing.
INSTALLATION
3.
FIG. 1
FIG. 3
FIG. 2
FIG. 4
FIG. 5
INSTALLING THE SCALE

1. Locate the printer panel on the right side of
the scale if you are looking at the face of the
scale. (Fig. 6)
2. Pull down on the top of the panel to expose
the printer. (Fig. 7A)
3. Once the panel has been opened, grab the
handle on the inside of the printer and pull
outward to expose the entire printer. (Fig. 7B)
4. Locate your label roll and remove 3-4 labels
from the end of the roll to give yourself slack
to install the labels into the printer.
• Roll Width: 30-60 mm
• Outer Diameter: 100 mm
• Inner Diameter: 40 mm
5. Once 3-4 labels have been removed from the
end of the label roll, place the label roll on
the black three-pronged spool located on the
right side of the printer. (Fig. 8)
6. Once the labels have been loaded onto the
black spool (Fig. 9A), pull the end of the label
roll around the white spool (Fig. 9B) so they
are in between the scale body and the spool.
7. Next, pull the end of the label roll in between
the two orange guards. (Fig. 10A)
NOTE: The printer lock must be disengaged
and in a horizontal position. If the printer lock
is still engaged, turn the top counterclockwise
to disengage the lock and open the exit for
the label to pass through. Once this step is
complete, the label should be sitting just at
the end of the exit.
8. Next, proceed to pull the end of the label roll
through the label exit, (Fig. 11) and push it
back through the other side so that the labels
wrap around the outside of the printer.
4.
FIG. 6
FIG. 9
FIG. 11FIG. 10
FIG. 7
FIG. 8
INSTALLING THE THERMAL LABEL PAPER
Continued on Next Page
A
A
A
B
B
B

5.
9. Once the label has been pulled through the
outside of the printer, take the end of the
label roll and run the labels on the left side
and out the right side of the final black spool
in the middle of the printer. (Fig. 12) Once the
label roll has been inserted as shown below,
manually spin the spool clockwise to begin
wrapping the labels around the spool.
10. Once these steps have been completed,
this is what the printer should look like if
everything is completed correctly. (Fig. 13)
NOTE: Before printing remember to re-
engage the printer lock. (Fig. 13A) If this is not
completed, you will get a notice when trying
to print on the scale indicator.
NOTE: If you get a “No Paper” error once you
print, it’s because you have the paper on the
outside of the two orange guards from step 7.
The paper must be put in the middle.
FIG. 12
FIG. 13
FIG. 14 FIG. 15
FIG. 16
A
LABEL PAPER
The AvaWeigh scales use Thermal Seam Marking
Label paper.
• Height: 60 mm
• Width: 30-60 mm
• Max. Outside Diameter: 100 mm
• Min. Inner Diameter:
26.8 mm (Fig. 14) or 40 mm (Fig. 15)
• Match inner diameter to corresponding roll
mandrel (Fig. 16)

6.
KEYBOARD
• 
• 
• 
334PCSP30 & 334PCSP60T Keyboard
334PCSP30 & 334PCSP60 Keyboard

7.
SCALE COMPONENTS
1. Main Unit
2. Tray
3. Display Group
• Liquid Crystal Display
• Display Bar
• (4) Screws
4. Thermal Label Paper
5. (1) Fuse
6. User Manual
7. Serial Cable
8. Power Cable
1.
1.
2.
2.
3.
3.
OVERALL APPEARANCE
334PCSP30T & 334PCSP60T
334PCSP30 & 334PCSP60

8.
WEIGHING & PRICING
Method 1: Hotkey Operation
Method 2: General Operation
OPERATIONS & SETTINGS
1. 
the label will print if it does not read 0.
2. When


3. If nothing is on the scale tray or you press the “zero” button when something is on the tray,
the light “zero point” will turn on, meaning the scale is under zero point condition.
4. The following operations, including peel, price with piece, discount, and price change are
based on automatic printing. If the scale is not under automatic print condition (automatic

• There are 224 hotkeys total that can be changed and printed by control PC.
• The above operation is suitable for hotkey 1-112. As for hot button 113-224, press the
button [PLU] + the corresponding hotkey.
• For easy operation, all PLU can print the latest illustration. The printing function is set by PC.
There are three methods for weighing and pricing. If the PLU information has been downloaded
from the PC or edited in the scale in advance, follow Method 1 and Method 2. If not, take
Method 3.
Example: Selling green onion weighing 1 lb., suppose the hotkey is 1, and the unit price is $1.50/lb.
Operation procedure: Press the button [ZERO] (if the screen already shows zero, the action can be
skipped). Put 1 lb. green onion on the scale tray and press hotkey 1. Now, the relevant weight, unit
price, and total amount will be shown on the screen and the label will be printed. (Note: In the non-
auto printing status, you need to press [PRN/ENTER]).
Example: Selling green onion weighing 1 lb., The Fresh Commodity Code is 10, and the unit price
is $1.50/lb.
Operation procedure: Press the button [ZERO] (if the screen already shows zero, the action can be
skipped). Put 1 lb. goods on the scale, press the button [PLU], input the LF code 10, and press
the button [PLU]. Now, the relevant weight, unit price, and total price will show on the screen and
the label will print. (Note: In the non-auto printing status, you need to press [PRN/ENTER]).

9.
TARE OPERATION
PRICE CHANGING
DISCOUNTS
The operation is suitable for the goods that need to be packed, ex. egg, beans etc. There are two
methods used for the following situation: 1. Packages and goods separated and 2. Packages and
goods non-separated.
Discount operation: The discount function can be locked via setting a password through the PC
background server. Passwords can be changed through the background at any time.
Method 1: Suitable for packages and separated goods
Method 1:
Method 2:
Operation: Discount in proportion
Permanent Changing
Temporary Changing
Example: Selling 1 box of apples, suppose the apple's unit price is $6/lb., the hotkey is 05, and the
box's weight is 1 lb.
Operation procedure: Put a container or box weighing 1 lb. on the scale. Press the
button [TARE]. Put on one box of apples and press the apple’s hotkey 05. After weighing, take
off the products and then press the button [TARE] again for elimination.
Example: Vegetable is priced at $8/lb., the discount is 5% off, and the vegetable's hotkey is 12.
Operation procedure: Enter discount 95% on the keypad and press button [DISCOUNT]. Put the
vegetables on the scale and enter the hotkey 12.
NOTE: In the non-auto printing status, you need to press [PRN/ENTER].
Example: Before changing, apple's unit price is $4.00/lb.. After changing, its unit price is $3.00/lb.
and hotkey is 05.
Steps: Press the apple's hoytkey 05, press button [PRICE], input new price $3.00/lb., and
press button [PRN/ENTER] for weighing and pricing.
Example: Before changing, apple's unit price is $4.00/lb.. After changing, its unit price is $3.00/lb.
and fresh commodity code is 15.
Steps: Press button [PRICE], input the apple's fresh commodity code 15, press button [PRN/
ENTER], input new price $3.00/lb., and press button [PRN/ENTER] for weighing and pricing.
Example: Before changing, cabbage's unit price is $1.40/lb. and it's temporarily changing to $2.00/
lb., The fresh commodity code is 13.
Steps: Put on 2 lb. cabbage, input the fresh commodity code 13, press button [PRICE], input new
price $3.00/lb., and press button [PRN/ENTER].

10.
CHOOSING UNIT OF WEIGHT
CHARGING BY PIECE
PRICE TAG PRINTING
QUICK COPY
Method: Press and hold the button [UNIT] for 1 second (listen for a beep). Then, choose new

This operation is suitable for price tag printing.
Operation steps: Put the item on the scale. Select item or enter the price and print a label.
Press  and press the number key (1-9) to print 1-9 pieces of price tags. Press  and
press the  to produce 1000 copies of the price tag. If you want to stop, press .
Unlimited printing label function is fast and for continuous printing of the same label.
Operation steps: Put the item on the scale. Select item or enter the price and print. Press
 and then press the number key  to continue printing. (If you want to stop, press ).
NOTE: 
weight being 0 and the permanent price changing function turned off. If using [NET CHECK/SET
AMT] button, the specified total amount function needs to be ON.
For single item-Method 1: Input relevant item's fresh commodity code (or press the hotkey).
Note: In the non-auto printing status, you need to press button  )
For single item-Method 2: Input single item's price by pressing button .
Input relevant item's fresh commodity code (or press the hotkey).
NOTE: In the non-auto printing status, you need to press the button .
For multiple items using Method 1: Input item's quantity (number), press button , input
single item's price by pressing button , and input relevant item's fresh
commodity code (or press the hotkey).
NOTE: In the non-auto printing status, you need to press button .
For multiple items using Method 2: Input single item's price by pressing button 
. Input item's quantity (number) by pressing button  Input relevant item's fresh
commodity code (or press the hotkey).
NOTE:

11.
AUTOMATIC FAST PACKAGING
COMMON USES FOR THE OPERATION BUTTON
This function can be applied to high-volume labels of similar but different weights for a product.
Procedure: Activate the  and function. Choose a single product or enter
a unit price. Put the goods on the scale tray one by one, and the scale will start to print label
automatically. If you want to operate at a faster pace, follow the next procedure.
Procedure: Put item 1 on the scale tray, it will print label automatically. Put item 2 on and take off
item 1. Take the label and stick it on item 1. The next label will print automatically. Put item 3 on
and take off item 2. Take the label and stick it on item 2. The next label will print automatically.
Repeat the procedure to save time.
• Auto print: Switch to automatic print, otherwise you’ll need to press button  to
print.
• Charge unit: Press button  for 2 seconds to switch charge unit to kg or g.
• Price locking: Press button to continuously print label of same product (product
name will not disappear). Press again to unlock.
• Price change: Press any hotkey and press button  to input price.
• Discount: Enter the discount rate (Ex. enter 80 for 80% discount) and press button
 to calculate. Enter hotkey of the goods put goods on the scale to start printing.
• Zero: Press button  to zero out of all the data.
• Peeling/Tare: Press button . Put goods on the scale, enter corresponding hotkey after
printing, press button to clear the tare weight.
• Clear: This button is commonly used to clear the unit price and to keep the system running
normally.
• Setting: Press button  and hold for 2 seconds to enter the setting interface, where
you can reset basic settings and parameters of the printer and scale, such as IP setting, restore
factory setting, print barcode type setting, WIFI setting, etc. Press button to select
function setting, press button  to enter setting interface, then set it.
 NOTE: If the wrong operation causes the system to crash, restart the scale.

12.
COMPUTER 334PCSP30T SOFTWARE SETTINGS
NETWORK CONNECTION MODE
ROUTER SET UP
LABEL SCALE SETTING
Set label scale to the corresponding IP address. After setting, use software’s “scale connection test”
icon for network testing, then connectivity will be normal. If it fails, please check that the PC’s IP
address is in the same segment.
1. Set the SSID name of the router (No more than 15 characters)
2. Set the type of router’s authentication, encryption algorithm, password,
Encryption type set as: WPA2-PSK
Encryption algorithm set as: AES
Password: No more than 15 characters
1. Long press the set button, enter the settings menu.
2. Select IP settings, set the IP address of the label scale.
NOTE: Need to be same network of routers which is the same IP address.
3. Select “SET WIFI” menu.
4. Enter the SSID WIFI set menu: input router’s SSID Name.
5. Enter the “WIFI password mode” select menu: select the WPA2-PSK/AES option.
NOTE: Need to be same as router encryption type.
6. Enter
7. After you're finished in the settings, restart the label scale, and the scale can be used for
wireless communications.
WIRELESS SCALE SETTING
COMPUTER ROUTER
ETHERNET/WIRED
CONNECTION
WIRELESS
CONNECTION WIFI
LABEL SCALE

INPUT SETTINGS OF SINGLE ITEM
13.
FUNCTION SETTING
This function can be locked with a password. Password can be set and reset through PC.
Step One: Press button [PLU]
Step Two: Type 6 digits of fresh commodity code and press button [PRN/ENTER] to confirm. When

 or  button to select the needed item, or enter corresponding letter shown in below sheet, if
enter “N” means to edit item name)
• L Single item Fresh Commodity code: Enter fresh commodity code within 6-digits
• N 
up to 36 digits
• H Hotkey setting: Up to three numbers, while preserving the changes of PLU
• C Single item Model: Enter Item No. within 10 digits
• P Price: Enter the unit price of goods no more than 7 digits
• U Charge unit: Use button   to select g or Kg
• D Department code: Enter the department code within 0-99
• B Bar Code Type: Select the barcode type from 0-99
• T Tare: Input tare weight within maximum
• Y Package Type: Select packaging type with the left and right buttons
(0: Normal, 1: fixed weight, 2: fixed price, 3: fixed weight & price)
• W Package weight: Enter PLU packaging weight
• E Package Tolerance: (0-20%)
• F Expiration: enter expiration date between 0~365
• M Information 1: input selected information code (0-197)
• R Discount setting: (- 10 ~ -125) (- 10 ~ -1) corresponding to discount of type 10-1 (1~125)
corresponding to a percentage discount
• I Single item’s label setting: 8 bits, 0: A0,1: A1,2: B0, 3: B1,4: C0,5: C1,6: D0,7: D1
• S Save for changes

SYSTEM SET UP
14.
That operation can be lock by password. The password is set in PC and can be changed at anytime.
Set menu items as below:
• @ IP address: set IP address of label scale
•  / Subnet mask: set the subnet mask of the scale
•  /  Gateway: set the gateway of the scale
• D Print density set: press  /  to select 0~7,from low to high, total 8 levels
• V Print speed set: press  /  to select 0~7, from fast to slow, total 8 levels
• S Select paper type: press  /  to select 0~1, total 2 types: 0:label,1:Receipt (small ticket)
• A Paper position fine-tuning: press  /  to select -8~+8 , total 17 offset, adjust to most
suitable starting position
•  Label style selection: D0 or D1 tag with / style 
• T Date adjusting: set current date and time
• N 
•  Whether to print weight unit: select to print weight unit or not
•  Whether to print price unit: select to print price unit or not
• J Decimal digits in unit price: set decimal digits in unit price
•  Set default barcode type: set barcode type.(0~99, the details refer to appendix two in
software user manual)
• X Total price precision: set total price precision(1: N.N0, 2: N.NN, 3: N.N)
• Total price carry set: set carry value.(for example round, that is 5)
• W Print time: set print time or not.(time format is hour and minute)
• Y 
• G Use after discount price or not: set barcode to print after discount price or not
•  Display items in weight field: set 0: weight, 1: quantity
• Q Print delete line mark: set 0: print, 1: not
•  Select barcode width: 0: wide, 1: narrow
• E The supplementary of default information 1 :0 means not default information1
• F The supplementary of default information 2 :0 means not default information2
• Discount goods belong to special department: setting if discount goods belong to special
department or not
• R IP setting on the host machine: using this scale as the host machine to set IP address, to
connect other scales
• P Statistics function mode: Choosing “yes” or “not ” to open statistics function mode for sales
goods
1. Press [set] button and hold on 3s to enter system setting status.
2. Press  or or direct number key accordingly to select item.
3. Press [PRN/ENTER] button to confirm.
NOTE: In menu, 0=not, 1=yes, if others, will note.

15.
•  Running account overflowing alarm: Set alarm when the running account overflows
•  Summation printing: print summation label, total amount/total quantity/quantity of total
label(clicking twice (set) to set)
•  Sum all quantity of single goods’ label: print all information of all sales goods((clicking twice
(set) to set))
•  Clear all the summation data: clean up all the summation data((clicking twice (set)to set))
•  Fine tuning of paper-out position: adjust paper's offset value: 0~16
• Z Zero print: whether to start zero print price tag
•  Print test page: printing self test page or not
•  Auto print: Whether the default setting is auto print when power on
•  Cover sensor on/ off: Whether to turn off the paper pickup detection function
•  Cover sensor AD: Paper pickup detection sensor, intelligent judgment or manual setting
(31-253)
•  Print page number: Set whether to print the label page number or not
•  Set print barcode type: set all barcode types for printing
•  LED backlight: Use to select LED backlight brightness 0~4 from high to low, Five
different brightness levels in total
•  Open num + amt print or not: Enter the number and total price to print a label immediately.
• 
•  Sleep time: set the time for automatically turning off the screen when the scale has no
operation
•  Set the number of copies: Set the default number of labels to be copied when the copy
button is pressed (0 means off)
•  Head input: Set the slogan displayed when the screen is idle
•  Receipt PLU name align: set the alignment of the product name when printing the receipt
(left, middle, right alignment)
•  Close show time: Turn off the time display when the scale is not operating
•  Edit barcode department: Set the department number in the barcode
•  EAN13 1st digit at outside: Whether the first digit of the EAN13 barcode is placed outside

•  Recover factory system para: Whether to restore the factory settings
•  SET WIFI: Set WIFI SSID, WIFI Encryption and WIFI password
•  About: View the device model and version number

16.
LOCK
SETTING, PLU, DISCOUNT, PRICE, and TARE functions can be locked via pass code. Password of
each function is independent, which can be set via pc software then downloaded to each scale, and it
can be changed at any time. For more details please check the security item in the function setting II
which is in the software operating instructions.
Open (before shutdown by software, Function after opening is always valid)

For example:
Open “SETTING” function
Click [SETTING] button for 2 seconds to open the system setting status. The system will remind you
to enter your passcode.Open “PLU” function
Click [PLU] button for 2 seconds to open the PLU editing status. The system will remind you
to enter your passcode.
Open “DISCOUNT” function
Click [DISCOUNT] button for 2 seconds to to open the discount status. The system will remind you
to enter your passcode.
Open “PRICE” function
Click [PRICE] button for 2 seconds to open the price setting status. The system will remind you to
enter your passcode.
Open “TARE” function
Click [TARE] button for 2 seconds to open the price setting status. The system will remind you to
enter your passcode.
Restored lock
Click [ON/OFF] button for 2 seconds to turn off the scale click [ON/OFF] to turn on the scale.

17.
TROUBLESHOOTING
SCALES CRASH
PRINT RELATED ISSUES
Boot up without any response
Reasons:
a. Bad contact between the power plug and socket.
b. The power cord is disconnected
c. Fuse blown
d. The power board is damaged
e. Bad motherboard
Solutions:
Use millimeter to check them one by one, use method of exclusion to find the solution.
Boot up without any sound, No display, backlight.
Reasons:
The spark that was generated by the power plug impacted the scale starting up.
Solutions:
Replace the Motherboard, reset the number, and download all the files.
Boot up without any sound, display “Update”
Reasons:
a. Program download error
b. Misoperation during the downloading of the program (such as halfway power outage)
Solutions:
a. Reload following the correct procedures. Reset the IP (default is 192.168.1.87) when updating
by Ethernet. If updating by serial port, input any number as the scale's ID (the maximum baud
rate is 115200)
Print a blank label, paper orientation is normal.
Reasons:
Setting label type error. Usually the label type computer download is D0, so label type of
label scale printing should be set D0. Or the printed label is blank.
Solutions:
a. Adjust the settings in following key order (on the scale).
  
  
  
the serial number of the scale. Change label type to D0 in set function, then carry out function
set command.
Print half or a half label, paper orientation is abnormal.
Reasons:
a. Set paper type detection error
b. Printer rear photoelectric has slanting direction or is dusty
c. Photovoltaic panels were damaged

18.
Label prints fuzzy or is not dark enough
Reasons:
a. Printer head has not been fastened well
b. Thermal head is dirty
c. Print density is too low
Solutions:
a. Re-fasten the printer head well
b. Wipe the thermal head gently with a soft cloth dipped in alcohol
c. Increase print density
Print a label with half clear and half fuzzy or even blank.
Reasons:
a. Printer head has not been fastened well
b. Thermal head is dirty
c. The print head is deformed
d. Motherboard failure
e. Poor or damaged head piece wiring harness
Solutions:
a. Re-fasten the printer head well.
b. Gently wipe the thermal head with a soft cloth dipped in alcohol.
c. If the problem still can’t be solved by above method, then cause of the
error is the print head deformation, need to change printer.
Bad printer should be handled by a trained professional.
d. Replace the motherboard
e. Re-plug and replace the head piece wiring harness
f. Wash the thermal head by rotating orange handle to open the print
head (Fig. 20), dip a soft, dry cloth in alcohol and wipe the thermal
head. (Fig. 21)
d. The photoelectric module behind the printer is bad
Solutions:
a. Adjust the settings in following key order on the scale
  
  
It’s also available to adjust software on computer. Open label scale 334PCSP30T, set paper
type to “Label” in set function,then download the setting to the error scale.
b. Check whether printer rear photoelectric has slanting direction or is dusty.
c. If the problem still can’t be solved, consider changing photoelectric module.
It is better to have a technician handle this step.
d. Wash the rubber roller:
1. Loosen switch wrench and recycle paper spring, remove print paper.
(Fig. 17)
2. Set label scale as paper feed menu, long press
paper feed menu and let rubber covered roller
in idle status. (Fig. 18)
3. Take a clean cotton swab, dip in alcohol,
and clean the roller back and forth. (Fig. 19)
FIG. 17
FIG. 19
FIG. 20
FIG. 21
FIG. 18

19.
Weird characters show on label or character can't be printed out
(Including Chinese and English)
Reasons:
a. Haven't downloaded fonts or single-byte character
b. Font conflict
Solutions:
a. Re-download fonts (including single-byte and double-byte character)
b. Re-select single-byte and double-byte fonts by files/option/label scale fonts,
then download Chinese and English fonts
Keys are ringing but the display is normal
Reasons:
a. A line piece on a key caused a short circuit
b. The key is blocked by a sharp object
Solutions:
a. Change the line piece of the key
b. Move the sharp object
If some keys do not ring
Reasons:
a. The ribbon cable that connects between the keyboard and the motherboard is not plugged in
b. The Mylar button FPC ribbon cable is not plugged in
c. The key is damaged
Solutions:
a. Remove the key ribbon cable and re-insert properly
b. Re-plug in the Mylar button FPC ribbon cable
c. If the problem isn't resolved by the above methods, the key may be damaged and need replacement
If good is weighing inaccurately
Reasons:
a. The rubber mat that's supporting the scale pan is touching the top cover
b. Dampness, module aging, or regional differences may be causing the inaccurate weight
c. The load cell is damaged because it is overloaded
d. The gravitational acceleration was not adjusted
Solutions:
a. Check to see if the top cover is installed properly. Once installed, re-install the load cell's
support frame
b. Replace the mainboard, AD board, and load cell
c. Replace the load cell and support frame
d. Adjust the gravitational acceleration
NOTE : If there are problems with the AD board and load cell, the scale should be returned.
KEY ISSUES
WEIGHING PROBLEMS