Z86L9900100ZEM Datasheet, PDF (41/70 Pages) Zilog, Inc. – ICEBOX

Z86L99 ICEBOX USER’S MANUAL
APPENDIX A
TROUBLESHOOTING GUIDE
INTRODUCTION
Before contacting a ZiLOG representative or submitting a Problem Report, please follow
these simple steps. Also, check the Precautions and Limitations sections in the Product Infor-
mation document included with the emulator to eliminate other possible known problems. If
a hardware failure is suspected, contact a local ZiLOG representative for assistance.
If the initial ZiLOG screen is not appearing after selecting the COM port and the screen mes-
sage displays Time-out while reading:
1. Check the RS-232C cable connection and communication port selection in ZDS. See Select
the Emulator on page 3-2 for more information on how to configure the host PC’s port.
2. Reset the emulator and ZDS.
3. If you are using the emulator’s oscillator, ensure that you removed the target’s oscillator
and connected pin 2 to pin 3 on the J5 jumper.
4. If ICEBOX stops working after connecting to the target, check whether the target crystal is
removed while using the ICEBOX’s oscillator.
5. Try connecting another cable.
6. Check if transmit/receive signals need to be swapped.
NOTE: On some DB9 connectors for the COM ports, the transmit/receive signal may be swapped and
a Null Modem adapter may be required.
7. Ensure that the power supply is connected, is turned on, and power is available.
8. Ensure that the power supply is set at +4.75 VDC to +5.25 VDC Max (+5.0 VDC typical).
9. Ensure that the J6 power jumper has been properly configured. See Emulator connection
on page 2-2 for more information on setting the J6 jumper.
10. Check if power supply is supplying the required current (0.8A typical) to the emulator.
UM005100-IRR0400
A–1