Printronix P7000 Series Maintenance Manual page 160

Chapter 3
Troubleshooting Display Messages
Table 5. P7000 H-Series (Spool) Error Messages List
Displayed Message
B50 ERROR: SDRAM
LOGIC COMB
BANKS*
B51 STATUS: XX%
LOADING...
B53 ERROR: I2C NO
ARBITRATION
B54 ERROR: SDA
LINE STUCK LOW
160
Explanation
Printer boot initialization
tests detect incorrect
SDRAM.
Status message: printer
boot-up routines are loading
printer system software into
flash memory and SDRAM.
There is a problem on the
2
I C bus which allows the
SDRAM DIMM to
communicate with the GPIO
or CT interface.
The SDRAM or a PCI card is
shorting out the serial data
bus on the controller board.
Solution
1. Cycle power. If the message
appears again, reseat the
SDRAM DIMM.
2. Power on the printer. If the
message appears, install a new
SDRAM DIMM of the correct type
and size.
3. Power on the printer. If the
message appears, replace the
controller board. Record the
message and return it with the
defective board.
No action required.
1. Cycle power. If the message
appears again, replace the GPIO,
in installed.
2. Power on the printer. If the
message appears, replace the
CT board, if installed.
3. Power on the printer. If the
message appears, replace the
controller board. Record the
message and return it with the
defective board.
1. Cycle power. If the message
appears again, reseat the
SDRAM DIMM.
2. Power on the printer. If the
message appears, install a new
SDRAM DIMM of the correct type
and size.
3. Power on the printer. If the
message appears, replace the
controller board. Record the
message and return it with the
defective board.