Section 5: Troubleshooting; Corrective Procedures; Replacement Parts; Table 16: Replacement Parts - Broadcom BCM91250A User Manual

User Manual
05/18/04
C P
ORRECTIVE ROCEDURES
• When CFE is not able to initialize the system and reach the console prompt, the four-character
alphanumeric LED display may be used to help debug the initialization sequence. When the Cer2
message appears, a cache error has occurred. This frequently occurs when the BCM1250 is either
undercooled, overclocked, or is in a low-voltage situation. Ensure that the correct voltage and cooling is
being provided. This error may also occur if a DIMM is not properly seated in the slot. Check the DIMMs to
make sure they are properly seated. For other LED message descriptions, refer to the Common Firmware
Environment (CFE) Specification document.
• When red LEDs D34 or D35 are lighted, this indicates that either fuses F4 or F3 have blown and must be
replaced. Replacement part information can be found in
A blown fuse can be easily extracted from the fuse socket by pulling it out with a small pair of pliers.The
new fuse can then be pressed into place.
• There is no output coming from the serial boot console, but the four-character LED displays CFE.
Because CFE uses serial port 0 (UART0) by default, ensure that a standard 9-pin RS232 null-modem
cable connection is being used. Also ensure that the terminal program is set to a baud rate of 115200, 8-
bit, no parity, no flow control.
R
EPLACEMENT
Board
Description
ID
F3 BCM1250 3.3V power
1A current limit
F4 BCM1250 2.5V power
5A current limit
F5 EJTAG connector
0.5A 32V surface
mounted fuse.
BT1 3V Li RTC battery
N/A BCM1250 fan/heat sink
Document 91250A-UM100-R
Section 5: Troubl eshooting
P
ARTS

Table 16: Replacement Parts

Manufacturer
Littelfuse
Littelfuse
Littelfuse
various
Avvid
Thermalloy
B roadc om C or por ati on
Table 16.
Manufacturer ID Web Information
154001
®
® 154005
® 434.500
CR2032
031659
BCM91250A
http://www.littelfuse.com/data/
Data_Sheets/154.pdf
http://www.littelfuse.com/data/
Data_Sheets/154.pdf
http://www.littelfuse.com/PDFs/
Products/434.pdf
http://www.aavidthermalloy.com/bin/
BGADisp.pl?partnum=031659
Troubleshooting Page 25