Specifications

6. TROUBLESHOOTING
Page 85 ©2001~2007 DH Instruments, a Fluke Company
6. TROUBLESHOOTING
6.1 OVERVIEW
MFC-CB is a sophisticated measuring instrument with advanced on-board features and functions.
Before assuming that unexpected behavior is caused by a system defect or breakdown, the operator
should use this manual and other training facilities to become thoroughly familiar with
MFC-CB operation. This troubleshooting guide is intended as an aid in identifying the cause of
unexpected MFC-CB behavior and determining whether the behavior is due to normal operation or an
internal or external problem.
Identify the symptom or unexpected behavior you are observing from the SYMPTOM list below.
A PROBABLE CAUSE is provided and a SOLUTION is proposed including references to manual
sections that provide information that may be of assistance.
Table 12. Troubleshooting Checklist
SYMPTOM PROBABLE CAUSE SOLUTION
Will NOT power up. Blown fuse. Replace fuse.
Front panel keys seem to be
disabled.
"REMOTE" command has been
sent from a host computer.
Send "LOCAL" command from host
computer or cycle MFC-CB power.
(4.3)
Front panel display is dim.
Screen saver option has
activated.
Press any key to resume full screen
power, adjust screen saver activation
time if desired. (3.4.3.1)
Keypad presses make undesired
sounds or no sounds.
Keypad sound settings are
incorrect.
Use SOUND function to set keypad
sounds as desired. (3.4.3.2)
Cannot access certain functions.
Display shows:
<ACCESS RESTRICTED>.
Current user level setting
restricts access to that function.
Change user level or consult system
manager. (3.4.2)
Cannot establish communication
over remote interface.
Computer and/or MFC-CB
interface not correctly configured;
incorrect or bad interface cable.
Check and correct interface settings
and cables. Run COM port test.
(3.4.5)
Display shows <FATAL
ERROR> or <FATAL FAULT>.
Encountered unresolved internal
software conflict.
Cycle power to clear. Please record
conditions leading up to event
including the numbers displayed
when [ENTER] is pressed and report
to DHI Authorized Service Provider.
Displays <******> where a
numerical value should go.
Number to be displayed is too
large for allocated space.
Usually due to an erroneous
setting or measurement causing
an out of limit value to be
calculated.
Check settings that may be causing
an out of limit value and adjust if
necessary. (3.2.1, 3.3.5)