Power Supply Failures; Interface Module Errors - Intermec EasyCoder 301 Service Manual

13.3 Printer Stops
Working after
Startup, cont'd.
13.4 Power Supply
Failures
IMPORTANT!
For safety reasons, it is strictly forbidden
to try to repair a CPU board or to
replace a blown fuse.
13.5 Interface Module
Errors
Intermec EasyCoder 301 – Service Manual Ed. 3
Description:
- The LED control lamp is not lit.
- The Feed button does not work
Possible Causes and Suggested Remedies:
• Error in the supply of mains power to the printer.
- Refer to chapter 13.2.

• Power supply failures.

- Refer to chapter 13.4.
Description:
The printer stops working or functions are unstable.
- The power LED is unstable, weak or not lit.
- Stepper motor is out of order.
- No or very weak printout.
Possible Causes and Suggested Remedies:
• Wrong or missing voltages from power supply.
- Check voltages using the test points on the CPU board (see
chapter 11.9.
- Check the cabling between the mains supply and the CPU
board. If the cable is OK, replace the CPU board.
- Blown fuse on the CPU board. Replace the CPU board.
WARNING!
The CPU board, the mains receptacle and the main switch
contain wires and circuits with dangerous voltages.
Description:
The complete console is "dead".
- LED control lamp is not lit and the Feed key does not work.
- The VCC voltage on the CPU board is OK (see chapter 12.4).
Possible Causes and Suggested Remedies:
• Defective cable.
- The cable between the CPU board and the interface module
may be defective or not properly connected. Check cable and
connector J2 on CPU board.
• Defective interface module.
- Replace. Do not attempt to repair.
Chapter 13 Troubleshooting
70