6. TROUBLESHOOTING
Page 141
© 2007 DH Instruments, a Fluke Company
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PPCH-G is a sophisticated pressure setting and 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 PPCH-
G operation. This troubleshooting guide is intended as an aid in identifying the reason for PPCH-G
behavior and determining whether the behavior is 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 24.
Troubleshooting Guide
SYMPTOM
PROBABLE CAUSE
SOLUTION
Will not power up.
Blown fuse.
Replace fuse. 1.2.1
Cannot access certain functions
>ACCESS RESTRICTED<
User level restricts access to certain
functions.
Change user level or consult system
manager. 3.5.5.5
Displays
<FATAL ERROR>
or
<FATAL FAULT>
.
Encountered unresolved internal software
conflict.
Please record conditions leading up to
event including the numbers displayed
when
[ENT]
is pressed and report to your
DHI
Authorized Service Provider. Cycle
power to clear. Table 28
Front panel keys seem to be
disabled.
<remote>
command has been sent from a
host computer.
Send
<local>
command from host
computer or cycle PPCH-G power. 1,
4.4.4
External RPM4 is not being
identified when PPCH-G is
powered up or
[RPT]
is pressed.
PPCH-G is unable to find external
RPM4 and Q-RPT.
The RPM4 COM1 port settings are not
correct.
Set RPM4 COM1 port to settings
required for use with PPCH-G. 2.3.7.1,
RPM4 Operation and Maintenance
Manual
Measured pressure display has
too much/not enough resolution.
Resolution setting needs to be changed.
Use RES function to change the
resolution setting. 3.4.2
Can’t increase resolution to level
desired in AutoRanged range.
Resolution setting is limited when
AutoRanging under 10 % of Q-RPT default
range.
Operation is normal. Table 7
Values that should be non-zero
are displayed as zero.
Resolution setting needs to be increased to
view significant digits.
Use RES function to change the
resolution setting. 3.4.2
The pressure units available
under the
[UNIT]
function key are
not the ones desired.
UNIT function needs to be customized.
Use PresU function to customize the
UNIT function or reset units to default.
3.5.6
Front panel display is dim.
Screen saver option has activated.
Operation is normal. Press any key to
resume full screen power. Adjust screen
saver time, if desired. 3.5.5.1
Содержание PPCH-G
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