NCR 74 OFX (7874), User Manual

Page: 62 / 268

3-20 Chapter 3: Installation
d. Scanner speaks “Place 30 pounds on deck then press Scale Zero”. Add 15 more
pounds to make 30 lb on the scale then press Scale Zero. Wait.
e. Scanner speaks “Place zero pounds on deck then press Scale Zero”. Take all
the weights off the scale then press Scale Zero. Wait.
f. Scanner speaks “Calibration complete” upon successful calibration.
6. When successful calibration is concluded, take the Top Plate off, ensure the Scale
Calibration Switch cover is closed, and tighten the green sealing screw.
7. Seal the Calibration Switch Security Cover with one of the following seals:
•
Lead/Wire Seal (NCR Part Number: 603–8001097) using a Lead/Wire Seal
Press (NCR Part Number: 603–9000157)
•
Film/Paper Seal (Obtain locally—Must meet the requirements of the local
government)
Note: Depending on local laws, Weights and Measures officials may be required
to attach the seal.
8. Reinstall the Top plate.
If Scan Doctor detects an error during the calibration procedure, one of the following
error codes may be given.
24535
Error Code Problem Suspect Components
1, 2, or 3
5
4
6
7
Possible out of range calibration
error
Scale hadware error
Scale Drift
Digital Board
Scale Assembly
EEPROM
Digital Board
Digital Board
Scale Assembly
Scale cables
Power Supply
Failure to update parameters into
EEPROM.
Error reading parameters from
EEPROM
Digital Board
Scale Assembly
Scale Digital Cable
EEPROM
Digital Board
8
Scale exercising failed (not enough
pressure or time consumed)
Top Plate is bottoming out
9
Linearity problem or slight
vibration noted while calibrating
Scale (Zero Drift)
Top Plate is touching checkstand.
Scale was jarred.