User Manual Chapter 7

Chapter 7: Testing and Troubleshooting 7-19
Problem Causes Possible Remedies
CBS was recently power
cycled.
Wait. ESLs can take several
minutes to re-synchronize after a
CBS power cycle.
Defective ESL. Replace ESL.
Software problem. Debug software.
Store contains 2.4 GHz
LAN device, and 7730
system does not conform
to co-existence guidelines.
Make sure you are following the
wireless LAN co-existence
guidelines. Make sure price
verifier is running.
ESL shows wrong
price, but software
reports ESL
successfully
acknowledged last
price update.
ESL has duplicate ID
number due to incorrect
initload.
Check for duplicate ID numbers in
ESL table and resolve.
Defective ESL. Replace ESL.
Software problem. Debug software.
ESL outside coverage area. Bring ESL into coverage area.
Poor coverage. Refer to tables in the following
section, Coverage Problems.
Software reports ESL
did not acknowledge
price update.
ESL does not exist. Replace ESL.
ESL outside coverage area. Move ESL back into coverage area.
Poor coverage. Refer to tables in the following
section, Coverage Problems.
Cannot initialize a
new ESL.
Defective ESL. Replace ESL.
ESLs in freezers fail
more frequently than
ESLs in other parts of
store.
Standard ESL used in
freezer.
Replace standard ESL with freezer
ESL.
Promotional
messages in freezer
look dim or sluggish.
Standard ESL used in
freezer.
Replace standard ESL with freezer
ESL.