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Error Messages and Self-Tests
Memory full
Pre!!!! RETURN to clear
The "overflow protect" memory lock feature is enabled
and display memory is full. You must disable the
memory lock feature or delete some data before any
more data can be accepted into display memory. If you
disable memory lock, you may wish to first enable top
data logging (if there is an integral or external printer
available) to maintain a hard copy data trail of all
lines forced off the top of display memory.
No 'TO' device
Pre!!!! RETURN to clear
You attempted to initiate a device control data trans-
fer (copy line, copy page, copy all) but no destination
device is currently defined. Press . , use the
"device control"
set of function keys to define an
external printer and/or the integral printer as the "to"
device, and then retry the copy operation.
U!!e NEXT or PREVIOUS key
Pre!!!! RETURN to clear
You attempted to change the configuration· field
marked by the cursor by entering data through the
keyboard. The field can only be changed by using the
"NEXT CHOICE"
and
"PREVIOUS CHOICE
function keys.
Value out of range
Pre!!!! RETURN to clear
The configuration menu field marked by the cursor
contains a value that is not within the allowed range.
TERMINAL SELF-TESTS
The HP 2624A includes the following six types of self-tests:
• Power-On Test
• Terminal Test
• User Data Comm Test
• Integral Printer Test
• Manufacturing Test
• Identify ROMs
r
The Power-On Test is initiated automatically as the result
of a power-on sequence; you may also initiate it from the
keyboard by using one of the
"!!ervi ce key!i
"function keys.
The Terminal Test can be initiated using a
"!iervice key!!"
function key, a
"MODES"
function key, or programmatically.
All of the other tests may only be initiated using the
"!iervice key!!"
set of function keys.
Power-On Test
The Power-On Test, which is performed automatically
whenever you turn on the terminal's power, does the follow-
ing:
1. Tests the processor chip.
2. Tests the video controller chip'.
9-2
3. Tests the keyboard/printer controller chip.
4. Verifies the integrity of all RAM (Random-Access
Memory) and firmware ROM (Read-Only Memory)
chips.
5. Verifies the integrity of all firmware ROM (Read-Only
Memory) chips.
6. Checks to be sure that at least one character ROM chip
is present.
7. Tests the integral printer (if present). Note that this test
does not, however, actually produce any printed output.
8. Verifies the integrity of the non-volatile RAM chip.
9. Rings the bell.
If any of the tests 1-4 above detects an error condition, the
LED!! on the processor board are used to indicate the test
that failed. No error is displayed because the video system
has not yet been turned on. The terminal stops functioning
at this point and pressing
II1II
or any other keyes) will not
restart the terminal. In such a case, you should call the
nearest HP Sales and Service Office and arrange to have
the terminal repaired.
If either test 5 or 6 above detects an error condition, an
appropriate message is displayed across the bottom of the
screen (where the function key labels normally reside) and
the terminal stops functioning. Pressing. will neither
clear the message from the screen nor restart the terminal.
In such a case, you should call the nearest HP Sales and
Service Office, tell them what error message was
generated, and arrange to have the terminal repaired.
If tests 6 or 7 detect an error condition, an appropriate
message is also displayed across the bottom of the screen.
As with tests 1-5, you should call your HP Sales and
Service Office and arrange for a service visit. In this case,
however, you may clear the message from the screen by
pressing •
and then use the terminal (except for the
integral printer if test 6 failed) while waiting for the
repairs to be done.
To initiate the Power-On Test from the keyboard, press the
following keys in the sequence shown:
II
Terminal Test
..
service
keys
This test does the following:
-
P OWER ON
TEST
1. Displays the message "TESTING!" at the bottom of the
screen until the test is finished or until an error condi-
tion occurs.
2. Tests the video controller chip.
3. Verifies the integrity of all firmware ROM chips.
4. Non-destructively verifies the integrity of all RAM
chips.
5. Tests the keyboard/printer controller chip.
6. Tests the integral printer (ifpresent). Note that this test
does not, however, produce any printed output.
7. Verifies the integrity of the non-volatile RAM chip.
8. Displays the test pattern shown in figure 9-1.
c
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