DH Instruments ADCS-601, Operation And Maintenance Manual

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8. TROUBLESHOOTING
Page 157 © 2005 DH Instruments, Inc.
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8.1 OVERVIEW
ADCS-601 is a sophisticated pressure measuring and controlling 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 ADCS-601 operation. This troubleshooting guide is intended as an aid in identifying the cause of
unexpected ADCS-601 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 24 . Troubleshooting checklist
SYMPTOM PROBABLE CAUSE SOLUTION
PPC3, RPM4 or PG7601 front panel
display is dim. Screen saver option has been activated. Press any key to resume full screen power,
adjust screen saver activation time if desired.
Product Operation and Maintenance Manual
Communication with an ADCS
component cannot be established. Computer and/or component interface not
correctly configured; incorrect or bad
interface cable. Check and correct interface configurations
and cables if necessary. Check interface
configuration in
ADCS Tools , [Setup] ,
[Configuration] . Run product COM port test.
Product Operation and Maintenance Manual.
ADCS component displays <FATAL
ERROR> or <FATAL FAULT>. Component encountered unresolved
internal software conflict. Cycle component power to clear. Record
conditions leading up to the event, including
the numbers displayed when enter is
pressed and report the information to a
DHI
Authorized Service Provider.
PG7601 displays <TOUT> or <TIME-
OUT>. PG7601 is having a communications
problem with an external device or
pressure generation/control component. Check setup and communications with
external vacuum gauge or pressure
generation/control component. PG7000
Operation and Maintenance Manual
ADCS component displays <******> or
<OVERFLOW> where a numerical
value should be. Number to be displayed is too large for
allocated space. Usually due to an
erroneous setting or measurement causing
an out of limit high value to be calculated. Check settings that may be causing an out of
limit high measurement and adjust if
necessary. Product Operation and
Maintenance Manual
The system’s vacuum pump(s) will not
run.
Blown fuse on AC2 or AC3 power supply
connection.
Replace fuse on AC2 or AC3 IEC power
connector on rear of Control Cabinet. Fuse
is a 250 VT 10 A.
The PG Terminal constantly displays
<Searching …. >. The PG Terminal is unable to establish
communications with the PG7601
Platform. Check that the PG Terminal to Platform
cable is installed correctly. If still unable to
get beyond <Searching …. >, contact a
DHI
Authorized Service Provider
The PG7601 run screen is not the
normal MAIN run screen. You are in the SYSTEM or AMBIENT run
screen. Operation is normal. Press [ESCAPE] on
PG7000 Terminal.
PG7000 Operation and Maintenance Manual
PG7601 piston drop rate is excessive. There is a leak in the pressurized system
or the device under test itself.
Correct leak.
PG7601 motorized rotation will not
engage. Motorized rotation system recovering from
overload or measurement made is
absolute by vacuum and reference
vacuum is not under
Ready limit.
Wait 25 seconds for system to recover.
PG7601 Operation and Maintenance Manual