J-Scale Jennings MINI User manual

JS MINI MANUAL
PLEASE READ COMPLETE INSTRUCTIONS BEFORE USE
Thank you for purchasing The Jennings MINI. With normal care and proper treatment it will provide years of reliable service. Please
read all operating instructions carefully. You can contact us at www.Jscale.com
.KEEP THE FOLLOWING POINTS IN MIND:
* If the display becomes locked on Out2 please recalibrate the scale.
* Avoid lengthy exposure to extreme heat orcold,yourscaleworks best when operated at normal room temperature. Always
allow the unit to acclimate to a normal room temperature for at least one hour before use.
* Allow sufficient warm up time. Turn the scale On and wait several seconds to give the internal components a chance to stabilize
before weighing.
* The cleanerthe environment the better.Dust, dirt, moisture,vibration,air currents and proximity to other electronic equipment can all
cause an adverse effect onthe reliability and accuracy of your scale.
* Handlewith care. Gently apply all items to be weighed onto tray top. Although this scale is designed to be quite durable, try to avoid
rough treatment as this may permanently damage the internal sensor and void your warranty.
* Avoid shaking, dropping or otherwise shocking the scale. Thisis a precision instrument and MUST BE HANDLED WITH
EXTREME CARE.
* Only operate the scale on a stable, vibration free surface. IMPORTANT: Do not operate near cell phones, radios, computers, or
any other electronic device.
.** These electronic scale are precision instruments. Do notoperate near an in-use cell phone, cordless phone, radio, computer or
other electronic device. These devices emit RF and can cause unstable scale readings. If your scale ever performs poorly, try
moving the scale to a different room or location. This is a very precise scale - the display may seem to wander or jump when
weighing. This is due to air currents or vibrations. Stable weighing is achieved when the display remains fixed for 3 seconds.
OPERATION_____________________________________________
Battery Operation:
1) Three #357 button batteries are required.
2) To install batteries:
a) Release the battery cover by sliding out-wards.
b) Place batteries into battery compartment aligned correctly.
c) Replace battery cover.
DO NOT USE EXCESSIVE FORCE & DO NOT PRESS ON THE TRAY!!!
3) The scale is now ready for battery operation.
(Advanced users only) CALIBRATION______________________________
IMPORTANT: This scale was professionally factory calibrated before shipment and does NOT need to be recalibrated by the end
user. However, if you wish to recalibrate your scale we provide these instructions for calibration: Repeat calibration if the scale ever
shows Out2. Incorrect calibration can occur if you do not follow the steps exactly. If your scale does not perform accurately,
please try replacing your batteries before you calibrate. You will need a 100gram weight to calibrate this scale. NOTE: if you do not
have access to a 100g weight you can purchase one at your local store or in emergency situations you can use 100g of coins or
weights (ie 20 US Nickels = 100g) as a 100g weight..
1) Turn the scale OFF and Place the it on a Flat, very stable surface
(Be certain the scale is OFF)
2) Press and hold the key for 10 seconds until a random large
number appears on the display - then release the key.
3) Press the key again, the display will show 2Ero and then
100.0
4) Gently place a 100 gram weight on the scale and wait 3 seconds.
5) Press the key. The display will show CAL and then PASS,
calibration is complete. Remove the weight, then Press and hold the key for 5 seconds to turn the scale
off.
NOTE: if after calibration your scale does not read accurately, this indicates
calibration error and the calibration process should be repeated more slowly.
Please calibrate on a verystable flat surface
INACCURACY / ERROR___________________________________
The primary reasons for inaccuracy or malfunction are low batteries, incorrect calibration, overload or operating on an unstable
surface. Pleasekeep this in mind and maintain and operate your scale properly. The scale is a precise instrument and must be
handled with the upmost care and caution.
FEATURE_______________________________________________
* Power Up Segment Test
When first turning the unit on, all segments of the display will appear as shown below. This display will remain for approximately 2

seconds and then reset to 0. 1:8:8:8:8
* Overload
When an applied load exceeds the capacity. “EEEE” will appear on the display. Remove the excessive load immediately!
!Remember: You can permanently damage the scale by overloading it!
* Negative Value
Any tarred value or a value leftin memory will bedisplayed as a negative number once all weight is removed from the unit. Press
tare to re-Zero the unit.
* Auto off
An auto shut off feature is provided to conserve battery power. The unit will automatically turn off after approximately 3 minutes of
inactivity.
KEY PAD FUNCTIONS
* UNIT (the left key)
Unit (mode) selection: Press and hold the left key to change weight unit You can select g (grams), oz (ounces), dwt
(pennyweight) or ct (carats).
* ON/OFF
Press this key to turn unit on. Once theunit is on, press and hold the same key for 5 seconds to turn the scale off
* TrayOperation:
The spinning locking mechanism of the Mini is designed to protect the scale from accidental overload when it is closed.
Simply spin the cover counter clockwise so that the LCD and buttons will be hidden from view. The scale is now ready for storage
To operate the sale simply spin the cover clockwise until it is fully open (you’ll feel it lock into place). Now the scale is ready for use.
NOTE: Always close the cover when storing the scale. Please be sure the cover is fully open before operation.
* ZERO (TARE)
After the scale is ON, you can press to reset the scale to zero. This can be used for eliminating from a sample (or a
Tray/Container) the weight valueof a container weight is permanently removed for the remainder of the procedure. Just turn the
scale ON, place the tray or container on weighing platform, and press the key. The scale will show 0.0 (or 0.00) on the display
and you can add items to the container/tray.
NOTE: When all weight are removed from the weighing tray, the tared value of a container will be displayed as a negative number.
Cycle thepower on the scale to reset the scale to zero.
** These electronic scale are precision instruments. Avoid disturbing environmental conditions such as currents, vibrations, strong
electrical and magnetic fields as well as a rapid change of the ambient temperature.
TROUBLESHOOTING & OPERATION NOTES:
1) If the Display ever becomes locked showing "Out2", please recalibrate the scale as outlined in the manual
2) If the Display ever becomes locked on LLLL or EEEE, this indicates that the scale was shocked, dropped or otherwise damaged
and the delicate weighing sensors have been damaged. You can try recalibrating the scale (If the sensor has not been hurt too badly
it will work again after recalibration). Otherwise you will have to followthe warranty instructions that came with your scale.
3) If the display becomes locked on 8888, this often indicates low batteries. However sometimes it also may indicate a serious zero
mark error. This means when you turn the scale on, it can't determine what zero is (a slight zero mark error will cause situation #1
above) Thus, if new batteries do not fixthis error the scale will have to be sent to us for replacement under our 5 year warranty
program.
4) If the display shows UNST, this means the scale is not stable. Please tryoperating the scale on a more stable surface and be
sure nothing is on the tray or stuck under the tray when you turn it on. If this situation persists, it may be an indication of fatal load
cell damage. Try calibrating the scale - if this does not work please follow the warranty instructions.
Although the JS is designed to be extremely durable, It’s important that you never overload or drop/shock the scale. Scales are
delicate instruments and unlike Cellular phones, scales have delicate sensors that determine how much an item weighs. If you drop
or shock your scale, these sensors "feel" the shock and are sometimes destroyed. This happens with all digital scales. We design
our scales to be as resistant to shock or drops as possible, however there is no way for us to protect 100% against load cell or
sensor damage. A well-treated scale will provide years of reliable and accurate weighing. However an abused scale will only work
until it’s sensors are damaged.