Rice Lake iRev 920i, Руководство по установке, Страница: 85 / 101

Appendix 81
10.0 Appendix
10.1 Troubleshooting
Table 10-1 lists general troubleshooting tips for various hardware and software error conditions. See the
following pages for additional information about speciÞc diagnostic tools.
The distributor site for the 920i at
www.rlws.com
includes a section of Frequently Asked Questions. RLWS will
post questions presented to the technical support group. Check this site often for new postings.
NOTE:
Always save copies of the indicator configuration, calibration,
iRev
and
iRite
files on a local PC so that these are
available when a software reload or upgrade is required.
Symptom Cause/Remedy
Indicator does not power up Possible blown fuse or bad power supply. Check fuses (see Section 2.7 on page 8)
and replace if necessary. Fuse specifications are listed on page
96; fuse
replacement part numbers are listed in Table 2-6 on page 10).
If fuses are good, check all voltages on CPU board. Power supply should output
both +6V and –6V levels to the CPU board. If power supply appears bad, check the
small glass fuse (2.5A, 5x20mm) on the power supply board.
"Blue screen" Check LCD contrast pot (under interface board access cover; see Figure 2-3 on
page 6). Possible corrupt core software; reset or reload software.
Hangs in "888" display Corrupt core software. Reset or reload software.
Cannot enter setup mode Possible bad switch. Test switch; replace interface board if necessary.
ERROR
message in weight display
Excitation voltage too low or off. Excitation voltage is provided by the A/D card.
Dashes in weight display Overrange or underrange scale condition. Check scale. For out-of -range conditions
in total scale display, check all scale inputs for positive weight values.
Serial port not responding Possible configuration error. For command input, ensure port INPUT parameter is
set to CMD.
A/D scale out of range Check source scale for proper mechanical operation. Check load cell and cable
connection. Possible bad load cell: check indicator operation with load cell
simulator.
Locked — Scale in use Scale is assigned as an input to a total scale or is the source for a serial scale,
analog output, or setpoint. If not correct, deconfigure this scale assignment and
reconfigure as required.
Serial scale out of range Check source scale for proper mechanical operation. Check cable connection.
Possible format mismatch between serial scale and
920i : Check SFMT specification
under SERIAL menu.
Option card failure Possible defective card or slot. Disconnect power, install card in different slot, then
apply power again.
Option card hardware diagnostic error Required option card not found. See Section 10.1.1 on page 82.
Expansion board does not power up Check expansion board power supply.
Table 10-1. Basic Troubleshooting