KERN PNJ User Manual

PNJ_PNS-SH-e-2011 - 8 -
4 Trouble shooting table
Symptom
Cause and troubleshooting
Nothing appears
on display.
1. AJDP circuit board failure
2. AC adapter failure
3. Poor cable connection in scale
4. Uncharged battery
1. Replace the AJDP
circuit board.
2. Replace the AC
adapter.
3. Inspect inside of
scale.
4. Charge the battery.
“u-Err” or
“o-Err” appears
after “AA---”
appears.
1. Use of an irregular weighing pan
2. Tuning fork assy failure or
mechanical unit failure
3. AJDP circuit board failure
4. Incorrect setting of address data
(During data entry)
5. Coefficient memories (address
data) have changed by noises or
static electricity
1. Check the weighing
6. pan.
2. Replace the
mechanical unit.
3. Replace the AJDP
circuit board.
4. Check the address
data.
5. Check the address
data
Display value
is unstable.
Poor reproducibility
Zero point
fluctuates
1. Weighing pan (pan base) is
binding on something.
2. Foreign object inside scale
3. Tuning fork assy failure or
mechanical unit failure
4. Effect from wind or vibration (Is
the response speed too high?)
1. Check the weighing
pan.
2. Inspect the inside of
scale.
3. Replace the
mechanical unit.
4. Reconsider the
installation
location and
response speed.
“ ” appears
on display before
“Capacity + 9d” is
reached.
1. Sum of tare and weight exceeded
capacity
2. Coefficient memories (address
data) have changed by noises
or static electricity
3. Incorrect address data setting
(during data entry)
4. Span calibration utilized a weight
with a large error
1. Check the tare.
2. Check the address
data.
3. Check the address
data.
4. Check the weight.
Span has
large
deviation.
1. Tuning fork assy failure or
mechanical unit failure
2. AJDP circuit board failure
3. Incorrect address data setting
(during data entry)
4. Coefficient memories (address
data) have changed by noises
or static electricity
1. Replace the
mechanical unit.
2. Replace the AJDP
circuit board.
3. Check the address
data.
4. Check the address
data.
Poor linearity
1. Tuning fork assy failure or
mechanical unit failure
2. Incorrect address data setting
(during data entry)
3. Coefficient memories (address
data) have changed by noises
or static electricity
4. Span calibration used a weight
with a large error
1. Replace the
mechanical unit.
2. Check the address
data.
3. Check the address
data.
4. Check the weight.

KERN PNJ Specifications

General

Brand	KERN
Model	PNJ
Category	Scales
Language	English