5-5
5
5.4
SELF TEST ERROR CODES
At power turn on, the N4865A conducts a selftest of its major components.
The test takes about 5 seconds. During the selftest the PWR LED is on and the
RDY LED is off. A successful test ends when the RDY LED on. Test failures
are indicated by the blinking LED patterns shown in Table 5-3. If a self test
failure occurs, turn the unit off for 10 seconds and turn power back on. If the
failure persists, refer to paragraph 5.5 for repair instructions. Note that some
of the failures could occur while the N4865A is running.
TABLE 5-2 N4865A SELF TEST ERROR CODES
Front Panel LEDs
RDY PWR LAN ACT TALK LSTN SQR ERR Fault
⊕
x
x
x
x
x
x
x fatal error (CPU,
FLASH, RAM..etc.)
−
−
−
−
−
−
−
− fatal error (power
supply)
⊕
−
−
−
−
−
−
Β LAN IC, Network
Socket Failure or DHCP
⊕
−
−
−
−
−
Β
- GPIB IC or GPIB
Transceivers
⊕
−
−
−
−
−
Β
Β Confi guration Error
or Flash Failure
⊕
−
−
−
−
Β
−
− OS Issued Exit
⊕
−
−
−
−
Β
−
Β RAM IC or Memory
overfl ow error
⊕
−
−
−
−
Β
B
− OS Error
⊕
−
−
−
−
Β
B
B Flash Error
Symbols:
⊕
= solid on, B = blinking, x = solid on or off
RDY PWR LAN ACT TALK LSTN SQR ERR Fault
FLASH, RAM..etc.)
−
−
−
−
−
−
−
− fatal error (power
supply)
Socket Failure or DHCP
−
−
−
−
−
Β
- GPIB IC or GPIB
Transceivers
or Flash Failure
overfl ow error
Summary of Contents for N4865A
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