Instruction manual

3-10 / Service ControlWaveLP
3.3 GENERAL NOTES
Certain questions or situations frequently arise when servicing the BBI Controllers. Some
items of interest are provided in Sections 3.3.1 through 3.3.3.
3.3.1 Extent of Field Repairs
Field repairs to ControlWaveLP units are strictly limited to the replacement of complete
PC boards and assemblies. Any repairs made down to the component replacement level will
violate the warranty. Defective PC boards or assemblies must be returned to Bristol
Babcock for authorized service.
3.3.2 Disconnecting RAM Battery
If the RAM battery of the FLASH-based ControlWaveLP is disconnected when the power
is off, the RTU will still execute its operating system load but all of the current process data
will be lost. Upon power-up, the FLASH-based RTU will act as though it had just been
booted and it will revert back to the initial values specified in its operating system load.
3.3.3 Maintaining Backup Files
It is essential to maintain a backup disk of each operating system load file to guard against
an accidental loss of process configuration data. Without a backup record, it will be
necessary to reconfigure the entire operating system load that can be a very time
consuming procedure. Always play it safe and keep backup copies of your operating system
loads.
3.3.4 FMI/OB Board Status LEDs POST Checks
At start-up, by applying power or by depressing the momentary contact (RESET) switch
(SW3), the resident BIOS will initiate and test the hardware; this process is referred to as
POST, i.e., Power On Self Test.
The status of the POST progress (typically too fast to discern) is posted to the FMI/OB
Board Status LEDs 1 - 6. Successful POST completion is indicated by a binary value of 86
on the Status LEDs if the unit is in Recovery Mode. Detection of a fault will be indicated by
FMI/OB Board Status LEDs 1 through 6 (see Table 3-3).
Table 3-3 - POST Status Codes
Hex Code
Status LEDs
1 2 3 4 5 6
Definition
00 0 0 0 0 0 0 POST beginning.
01 1 0 0 0 0 0 CPU register test about to start.
02 0 1 0 0 0 0 NMIs are disabled; delay starts.
03 1 1 0 0 0 0 power-on delay finished.
04 0 0 1 0 0 0 kbd BAT done; reading kbd SYS bit.
05 1 0 1 0 0 0 disabling shadowing & cache.
06 0 1 1 0 0 0 calcing ROM cksum, wait kbd ctrllr.
07 1 1 1 0 0 0 cksum okay, kbd ctrllr free.
08 0 0 0 1 0 0 verifying BAT cmd to kbd ctrllr.
09 1 0 0 1 0 0 issuing kbd ctrllr cmd byte.