COM4N to COM4 Reversion Procedure: Difference between revisions
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= Procedure to Revert a COM4N Board from Shared Interrupts = | |||
Back to Individual Interrupts | |||
1. Remove all jumpers from J15, J16 and J17. | |||
2. Add the following jumpers. Refer to figure 1 for location: | |||
J16 3-4 | |||
J17 1-2 | |||
3-6 | |||
3. The Hardware Watchdog MUST be enabled. Verify the jumper J18 is installed. | |||
4. Remove the COM4N ejector tab (held with press-pin) and replace with a COM4A tab or | |||
remove COM4N label. | |||
5. Replace 2-position IRQ cable, CBL-151-1124G, with 3-position IRQ cable, CBL-151- | |||
1124F. | |||
Revision as of 21:47, 6 March 2025
If it is necessary to revert from the network option back to standard (non-network), the COM4N must be converted back to standard as well. The network option required shared interrupts and standard uses unique interrupts for each port. The non-network version of the hardware will not operate with shared interrupts.
Required Materials and Tools
Upgrade Parts Required
- IRQ cable (3 connector, CBL-151-1124F)
- “COM4” ejector tab
Tools/supplies Required
- Flat blade screwdriver
- Antistatic (ESD) wrist strap
- Wire-wrap tool
- 30ga wire-wrap wire
| NOTE | Non-network version of the hardware will not operate with shared interrupts. |
| Caution | Follow proper antistatic precautions when handling the boards. |
Back to Individual Interrupts 1. Remove all jumpers from J15, J16 and J17. 2. Add the following jumpers. Refer to figure 1 for location: J16 3-4 J17 1-2 3-6 3. The Hardware Watchdog MUST be enabled. Verify the jumper J18 is installed. 4. Remove the COM4N ejector tab (held with press-pin) and replace with a COM4A tab or remove COM4N label. 5. Replace 2-position IRQ cable, CBL-151-1124G, with 3-position IRQ cable, CBL-151- 1124F.