Bennett CNG Spec. 100 Series, Operator'S Manual

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Bennett CNG Spec.100 Series Operators Manual Diagnostics
44
DIAGNOSTIC’S CODE 3 – CPU TEST
The CPU test deliberately introduces a fault into the arithmetic unit of the CPU. The display must then flash
ERROR
99
indicating the
system has detected the fault. If the message is not displayed, the test has failed.
1. Enter diagnostics and press the 3 button on the keypad and the [ ENTER ] button. A
typical test appears as shown in Figure 5.8 .
2. The 99 error will clear when the Cancel button is pushed to exit Diagnostics.
3. Press the [ CANCEL ] button to exit this test.
4. Press the [ CANCEL ] button twice to exit Diagnostics.
DIAGNOSTIC’S CODE 4– RAM TEST
The RAM test is used to test the system RAM. The CPU performs a RAM test to determine if RAM is good or corrupted.
1. Enter diagnostics and press the 4 button on the keypad and the [ ENTER ] button.

If the RAM failure is detected by the RAM test, the displays flash the message
as shown in
Figure 5.9.

If a RAM failure is not detected by the RAM test, the displays flash the message
as shown in
Figure 5.10 .
2. Press the [ CANCEL ] button to exit this test.
3. Press the [ CANCEL ] button twice to exit Diagnostics.
Sale $
error
GGE 99
Diag ---3
FIGURE 5.8 CPU TEST
FIGURE 5.9 – RAM TEST FAILURE
FIGURE 5.10 – RAM TEST
Sale $
error
GGE
2
Diag ---4
Sale $
data
GGE good
Diag ---4