P/N 960-000175R_Rev. A {EDP #233426}
© 2014, JAPAN CASH MACHINE CO., LTD.
2 9
Series Banknote Validator (DBV-400) Integration Guide
This section provides troubleshooting instructions
for the DBV-400 Banknote Validator Units, includ-
ing the following information:
• Introduction
• Troubleshooting Overview
• Fault Table Listings
• LED Indication Conditions
Introduction
Most Banknote Validator failures result from minor
causes. Before replacing any parts, be sure that all
assembly and circuit board connectors are properly
fitted, with their harnesses properly connected.
Poor performance by the DBV-400 Banknote Vali-
dator is often caused when dust or foreign objects
adhere to the sensors or transport belt. Clean the
Banknote insertion section first, then carefully
observe the operating state of the Validator when
re-initializing power. This observation is important
in locating any causes of failure and the possible
fault location.
Perform all repairs by referring to Calibration and
Testing in Section 6 of the DBV-400 Service Man-
ual, and the Disassembly/Reassembly instructions
in Section 4 of the DBV-400 Service Manual.
Troubleshooting Overview
This product allows the operator to perform fault
diagnosis by checking various Fault Table Listings
against the symptoms. Survey the cause(s) of any
failure occurrences during the process.
After determining the cause of the failure, execute
the Performance Test, and then repair the unit
replacing any appropriate parts necessary.
Fault Table Listings
Table 19 lists the various possible DBV-400 Unit
fault conditions that can occur and the necessary
actions required to correct them.
8 TROUBLESHOOTING
Table 19
General Fault Conditions
Symptoms/Error
Messages
Possible Fault Causes
Corrective Action Required
Banknote Validator is
not working
(does not accept any
Banknotes)
No external Power is applied to
the Banknote Validator
(+12/24V DC & GND)
Verify that the Power 12/24V DC and Ground Cables are connected
to their appropriate Pins on the main connector.
Wrong or inappropriate
connections
Verify that all Harness Connectors are properly seated.
Check for any bent, missing or damaged Pins in the Connector Plugs and
mating Receptacles.
Corrupted Software.
Re-download the correct Software.
CPU Board failure.
Conduct an Initial Operational Test. If the test result is Negative (NG), replace
the CPU Board. Make sure to re-calibrate the Sensors after CPU Board is
replaced.
Banknote jams occur
often
A pressure Roller is dirty or
damaged.
Clean all Pressure Rollers.
Replace as necessary.
A pressure Roller Spring is
loose or missing.
Check all Pressure Roller Springs using a finger pressure test.
Replace as necessary.
A foreign object is lodged in
the Transport path and/or
inside the Cash Box.
Clean the Transport path and remove any foreign object discovered.
The Validator Guide is not
properly seated all the way
into the DBV-400 Unit
Re-seat the Validator Guide into the DBV-400 Unit so it is firmly seated all the
way into the Frame. Ensure the Validator Guide Release Lever Latches are
securely locked onto the Frame.
Banknote is wider than 72 mm
or narrower than 60mm.
Use only Banknotes widths having the correct DBV-400 Unit’s size
specifications.
Acceptance rates
Dirt and/or stains on the
Rollers, Belts and Lenses.
Clean the Transport path. Refer to “Preventive Maintenance” on page 16.
The Unit has been
disassembled, and calibration
adjustments have not
occurred following a
reassembly.
Calibrate the Sensors after reassembling the DBV-400 Unit.
The wrong Software version
or an older Software version
is being used.
Make sure that the programmed Software is the latest version, and it
supports the Currency values for the specific Country.
Software not designed to
accept current Banknotes
Check the particular specifications for the required Banknote Type
Acceptance, and make sure the Banknotes will be accepted by the Software
loaded (e.g., check denomination/issuing year).
