Troubleshooting - Frick QUANTUM Maintenance Manual

TROUBLESHOOTING THE QUANTUM CONTROL PANEL
This section contains information on troubleshooting and
making corrections to the boards and control circuits of the
Quantum. Reference the drawings at the end of this manual.
GENERAL INFORMATION:
The components within the control
panel can be inadvertently dam-
aged by static electricity or mishan-
dling. Only qualified technicians should directly handle
these components.
1. DO NOT attempt to make corrections to the power sup-
ply without shutting off the power to the control panel.
Accidental shorts can irreparably damage the proces-
sor boards or the display screen.
2. DO NOT HANDLE the panel boards when their cables
are disconnected without first attaching a properly
grounded wrist ground strap to prevent static electrical
discharge from your body.
Most problems encountered with the microprocessor and
control circuits will be the result of a wiring fault, blown fuse,
faulty I/O module or failure of a peripheral control such as a
solenoid coil or a pressure transducer. Faults in the com-
puter, while possible, are unlikely. If a fault develops in the
computer, the probability is that all functions will cease and
the display screen will go blank. The control system of the
compressor consists of an AC (high voltage) side which
can be either 120 volt or 230 volt and a DC (low voltage)
side. The AC side actuates solenoids, relays, alarms, and
other electromechanical functions. The DC side operates
the computer and its various sensors.
When working within the panel, the
AC high voltage side, which can be
either nominal 115 VAC or nominal
230 VAC, CAN CAUSE INJURY OR DEATH.
To troubleshoot the low-voltage side of the control circuits,
it is necessary to have the following tools:
1. Accurate digital multimeter.*
2. Small wire stripper.
3. Small screwdriver.
4. Small snip nose pliers.
5. IC chip extraction and insertion tools.*
6. Wrist Grounding strap.*
7. Static free grounded work surface.
* Available from Frick Order kit no. 111Q0451862
Note: Proper panel voltage refers to the AC (high volt-
age) that has been supplied to the panel which could be
either nominal 115 VAC or nominal 230 VAC (Reference
the Control Panel Power Specifications).
Some problems that are encountered involve troubleshoot-
ing the panels digital inputs and outputs. The Digital I/O
(Input/Output) boards have six Digital I/O (DIO) board con-
nectors labeled P1 through P6. The input and output mod-
ules are wired into a DIO connector plug. Position 3 pro-
vides power and position 4 is a neutral on the DIO connec-
tors.
FRICK QUANTUM CONTROL PANEL
MAINTENANCE
WHAT TO DO BEFORE CALLING THE FACTORY
When someone calls in to the factory with a Quantum prob-
lem, they usually don't provide enough information. An ex-
ample of this is the statement that the Quantum is not "boot-
ing" (the main processor board is not starting). Unfortunately,
this description is usually vague and only means that there
is nothing on the display. A blank display could be the result
of many different problems. Following is a list of possible
reasons for no display:
Before calling the factory for assistance, review the follow-
ing information and try to discover and resolve your Quan-
tum problem.
WHAT SHOULD OCCUR WHEN
POWERING UP THE PANEL
The first thing that should be checked when troubleshoot-
ing the Quantum is it's powering up sequence.
When powering up the Quantum the following sequence of
events are indicative of a properly working main processor
board:
•
•
•
•
•
•
•
•
•
•
No power
•
Loose or Faulty Display Cable or Inverter Cable
•
Bad Display
•
Bad Backlight Inverter
•
Bad Backlight Fluorescent Tube
•
Bad Application Chips (U24 & U35)
•
Mismatch between BIOS (U36) and Application
Chips
•
Mismatch between Application Chips and Key-
board Chip (U42)
•
Faulty CPU Board (Single Board Computer)
•
Wrong Combination of Display, Cable, Inverter, or
Software
The LED's (D1 through D8) will begin to blink. (Lower
right corner of PCB)
LED D10 will begin to blink. (Upper left side of PCB)
"Initializing Frick System" is displayed on the screen.
Should see numbers counting up and then finish dis-
playing "01920...OK".
"System Board Initialized" is displayed.
LED's D1 through D8 will begin to blink rapidly and
then D1 will remain on and the rest will turn off.
The message "Starting FOS System" is displayed.
The screen will go blank for one second.
Screen – Program starts with the following messages.
1. The following message will display only if the pro-
gram version is 2.21 or earlier, or if you return to an
earlier program version:
This is a different Version all current setpoints will be
erased.
Press 1 for yes — 2 for No.
2. The following message will display if an updated
program was installed:
Initializing program — please wait.
3. The following message will display when restarting
a program:
Reading E2 memory.
S90-010 M
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