Cpu Board Failures - Intermec EasyCoder 501 XP Service Manual

Chapter 17 Troubleshooting
17.4 CPU Board
Failures
146
Description:
The power LED is lit, but the printer has one of the following
faults:
- The printer refuses to start up.
- The program execution is halted.
- Stepper motors do not work.
Possible Causes and Suggested Remedies:
• Flash or DRAM SIMMs not properly fi tted.
- A SIMM is not fully inserted in its socket. Remove all SIMMs
and fi t them back again, making sure they are being fi rmly
held by the snap-locks.
• No Boot Flash SIMM in socket ROM2.
- A Flash SIMM containing a boot sector must be fi tted in
socket ROM2, or the printer will not start.
• Startup error.
- Execution of the initial boot sequence can be checked as
described in Chapter 15.6. If the execution stops prematurely,
note when it happens and contact our Technical Product Sup-
port dept.
Intermec EasyCoder 501 XP – Service Manual Ed. 4