7-2
PG 720 P Programming Device
C79000-G7076-C721-02
Table 7-1
Errors/Faults in PG 720 Operation
Error/Fault
Cause
Remedy
Power-on LED does not light up
PG 720 is switched off
Power supply not properly
connected
Battery run down
Switch the unit on
Check the power supply, power
cable, and power connector
Charge or replace battery
Display remains dark after power
up
Back lighting is not active
Wait 3 to 5 seconds until the back
lighting is active
External monitor remains dark
LCD enabled is entered in
SETUP
Enter CRT enabled or
SIMULTAN in SETUP
Message on the display:
“Invalid configuration
information... Press the F1 key for
continue, F2 to run Setup utility”
Incorrect configuration data
Press “F2” key, check the
configuration data in the SETUP
program, if necessary adapt the
default values, and check the
error messages in the first
SETUP menu
Message on the display: “No boot
device available”
Diskette in drive A: is not a boot
diskette
Wrong hard disk type entered in
SETUP
Replace diskette with boot
diskette
Use the “Autotype Fixed Disk”
function
Message: “Keyboard stuck key
failure”
A key became blocked during the
self-test of the keyboard
Check the keyboard
Restart the system
Booting of the PG 720 aborted
with a series of beeps
Error occurred during the self-test
Check hardware
Every time a key is pressed, a beep
is heard and no character appears
Keyboard buffer overflow
<CTRL> <PAUSE>
Not ready message when
attempting to read a diskette
No diskette inserted
Diskette is not formatted
Insert diskette
Format diskette
Read-only error when attempting
to write to a diskette
Diskette is read-only
Read-only hole open on 3.5’’
diskette
Cancel the write protection
<\> key does not exist
Wrong keyboard driver is being
used
German keyboard:
<ALTGr> <ß>
International keyboard
: <\> key
Mouse pointer cannot be moved
with the trackball
The ball is not rotating
No or wrong mouse driver
Clean the trackball and its
housing
Load the correct mouse driver
Mouse pointer moving erratically
Trackball dirty
Clean the trackball and its
housing
Trackball not working
Trackball is switched off
External mouse plugged in
PS/2 interface is set to external or
disabled in Setup
Activate trackball with key
combination F
n
+ ^
Check Setup entry
Error Diagnostics