Table of Contents
Advertisement
6
.
T
6
.
T
R
O
U
R
O
U
6.1
OVERVIEW
molbox RFM is a sophisticated flow 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 molbox RFM operation. This
troubleshooting guide is intended as an aid in identifying the cause of unexpected molbox RFM 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.
SYMPTOM
Will NOT power up.
Front panel keys seem to be disabled.
Front panel display is dim.
Keypad presses make undesired sounds
or no sounds.
Cannot access certain functions. Display
shows:
<ACCESS RESTRICTED>.
Cannot establish communication over
remote interface.
molbox RFM unable to read molbloc.
Displays <FATAL ERROR> or <FATAL
FAULT>.
Displays <PRT ERROR>.
Display <TOUT> or <TIME-OUT>.
Displays <NO BLOC>.
B
L
E
S
H
O
O
T
I
B
L
E
S
H
O
O
T
I
Table 25. Troubleshooting Checklist
PROBABLE CAUSE
Blown fuse.
"Remote" command has been sent
from a host computer.
Screen saver option has activated.
Keypad sound settings are
incorrect.
User level setting restricts access
to that function.
Computer and/or molbox RFM
interface not correctly configured;
incorrect or bad interface cable.
Cable not connected, molbloc data
corrupted.
Encountered unresolved internal
software conflict.
molbox RFM has identified an
unusually
large
between the temperature readings
of the two molbloc PRTs which
may be due to faulty molbloc PRTs
or
the
molbox
measurement system.
molbox RFM is having an internal
communications problem with one
or several of its RPTs.
No molbloc is connected to molbox
RFM or molbox RFM is unable to
read the molbloc that is connected.
Page 149
N
G
N
G
Replace fuse.
Send "local" command from host computer
or cycle molbox RFM power. (4.2)
Press any key to resume full screen power,
adjust activation time if desired. (3.4.5.1)
Use SOUNDS function to set keypad
sounds as desired. (3.4.5.2)
Change user level or consult system
manager. (3.6.2)
Check and correct interface configurations
and cables if necessary. Run COM port
test. (3.6.6.3.)
Check cable connections, try another
molbloc, reload molbloc EEPROM. (3.3.8
and 5.5)
Cycle power to clear.
conditions leading up to event including the
numbers
pressed and report to DHI Authorized
Service Provider.
Connect a different molbloc.
disagreement
error is no longer present, the PRT system
of the original molbloc is probably damaged
and requires service. If the PRT error is
present
RFM
ohmic
molbloc/molbox
measurement system is probably defective
and requires services.
Turn power off and back on and or execute
Reset - Sets being careful to reenter
desired settings afterwards.
persists,
(3.6.1.1)
Verify proper electrical connection between
the molbox RFM and a valid molbloc.
<NO BLOC> is observed with one molbloc
and not others, molbloc is damaged and/or
EEPROM is corrupted. (5.5)
© 1998-2007 DH Instruments, a Fluke Company
6. TROUBLESHOOTING
SOLUTION
Please record
displayed
when
[ENTER]
If the PRT
with
different
molblocs,
the
cable
or
RFM
ohmic
If problem
molbox
RFM
needs
service.
is
If
Advertisement
Table of Contents
