Cannot power on SPCN-controlled I/O expansion unit

You are here because an SPCN-controlled I/O expansion unit cannot be powered on, and might be displaying a 1xxx-C62E reference code.

Please see Power isolation procedures for important safety information before continuing with this procedure.

Power on the system.
Starting from SPCN 0 or SPCN 1 on the system unit, go to the first unit in the SPCN frame-to-frame cable sequence that does not power on. Is the Data display background light on, or is the power-on LED blinking, or are there any characters displayed on the I/O expansion unit display panel?
Note:

The background light is a dim (yellow) light in the Data area of the display panel.
- Yes: Go to step 12.
- No: Continue with the next step.
Use a multimeter to measure the ac voltage at the customer's ac power outlet.
Is the ac voltage from 200 V ac to 240 V ac, or from 100 V ac to 127 V ac?
- Yes: Continue with the next step.
- No: Inform the customer that the ac voltage at the power outlet is not correct.
  This ends the procedure.
Is the mainline ac power cable from the ac module, power supply, or power distribution unit to the customer's ac power outlet connected and seated correctly at both ends?
- Yes: Continue with the next step.
- No: Connect the mainline ac power cable correctly at both ends.
  This ends the procedure.
Perform the following:
1. Disconnect the mainline ac power cable from the ac module, power supply, or power distribution unit.
2. Use a multimeter to measure the ac voltage at the ac module, power supply, or power distribution unit end of the mainline ac power cable.
Is the ac voltage from 200 V ac to 240 V ac, or from 100 V ac to 127 V ac?
- No: Continue with the next step.
- Yes: Go to step 7.
Are you working on a power distribution unit with tripped breakers?
- No: Exchange the mainline ac power cable or power distribution unit (as installed).
  This ends the procedure.
- Yes: Perform the following:
  1. Reset the tripped power distribution breaker.
  2. Verify that the removeable ac line cord is not the problem. Replace the cord, as installed, if it is defective.
  3. Install a new power supply (as installed) in all power locations until the defective one is found.
  This ends the procedure.
Does the unit you are working on have ac power jumper cables installed?
Note:

The ac power jumper cables connect from the ac module, or the power distribution unit to the power supplies.
- Yes: Continue with the next step.
- No: Go to step 11.
Are the ac power jumper cables connected and seated correctly at both ends?
- Yes: Continue with the next step.
- No: Connect the ac power jumper cables correctly at both ends.
  This ends the procedure.
Perform the following:
1. Disconnect the ac power jumper cables from the ac module, or power distribution unit.
2. Use a multimeter to measure the ac voltage at the ac module or power distribution unit (that goes to the power supplies).
Is the ac voltage at the ac module and power distribution unit from 200 V ac to 240 V ac, or from 100 V ac to 127 V ac?
- Yes: Continue with the next step.
- No: Exchange the following as they are installed (see ../areanparts.dita):
  - AC module
  - Power distribution unit
  This ends the procedure.

Perform the following:

Connect the ac power jumper cables to the ac module, or power distribution unit.
Disconnect the ac power jumper cable at the power supplies.
Use a multimeter to measure the voltage of the power jumper cables input to the power supplies.

Is the voltage 200 V ac to 240 V ac or 100V ac to 127 V ac for each power jumper cable?

No: Exchange the power jumper cable.
This ends the procedure.

Yes: Exchange the following parts, as installed, one at a time:

Table 15.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

Display unit
Power supply 1
Power supply 2
Power supply 3

This ends the procedure.

Perform the following:

Disconnect the mainline ac power cable (to the expansion unit) from the customer's ac power outlet.

Exchange the following FRUs, one at a time:

Power supply.

Table 16.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

Reconnect the mainline ac power cables (from the expansion unit) into the power outlet.
Attempt to power on the system.

Does the expansion unit power on?

Yes: The unit you exchanged was the failing item.
This ends the procedure.
No: Repeat this step and exchange the next FRU in the list. If you have exchanged all of the FRUs in the list, ask your next level of support for assistance.
This ends the procedure.

Is there a reference code displayed on the display panel for the I/O unit that does not power on?

Yes: Continue with the next step.

No: Replace the following:

Table 17.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

This ends the procedure.

Is the reference code 1xxx xx2E?
- Yes: Continue with the next step.
- No: Use the new reference code and return to Starting a Service Call.
  This ends the procedure.

Do the SPCN optical cables (A) connect the failing unit (B) to the preceding unit in the string or loop?

.---------.      (A) SPCN
| System  |  Optical Cables -.      .----- SPCN
| Unit    |                  |      V   Optical Adapter
| SPCN 0  |        .-.       V    .-.     
'----.----'        | +------------+ |
    |              | +------------+ |
.----'----. .-------'-+    .-------'-+ .---------.
|  J15    | |Sec   J16|    |Sec   J15| |    Sec  |
|Sec Unit +-+UNIT  J15|    |Unit  J16+-+J15 Unit |
|  1      | |  2      |    |  3      | |      4  |
'---------' '---------'    '---------' '---------'
                              ^
                              |
                              '---- (B) Failing Unit

Yes: Continue with the next step.
No: Go to step 18.

Remove the SPCN optical adapter (A) from the preceding frame in the string that cannot become powered on.

.---------.          .--- (A) SPCN Optical Adapter
| System  |          |
| Unit    |          V
| SPCN 0  |         .-.            .-.
'----.----'         | +------------+ |
     322            | +------------+ |
.----'----. .-------'-+    .-------'-+ .---------.
|   J15   | |Sec   J16|    |Sec   J15| |    Sec  |
|Sec Unit +-+Unit  J15|    |Unit  J16+-+J15 Unit |
|  1      | |  2      |    |  3      | |      4  |
'---------' '---------'    '---------' '---------'
                               ^
                               |
                               '-- Failing Unit

Perform the following:

Notes:

The cable may be connected to either J15 or J16.
Use an insulated probe or jumper when performing the voltage readings.

Connect the negative lead of a multimeter to the system frame ground.
Connect the positive lead of a multimeter to pin 2 of the connector from which you removed the SPCN optical adapter in the previous step of this procedure.
Note the voltage reading on pin 2.
Move the positive lead of the multimeter to pin 3 of the connector or SPCN card.
Note the voltage reading on pin 3.

Is the voltage on both pin 2 and pin 3 from 1.5 V dc to 5.5 V dc?

Yes: Continue with the next step.

No: Exchange the following:

Table 18.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

This ends the procedure.

Exchange the following FRUs, one at a time):

In the failing unit (first frame with a failure indication), replace the following:

Table 19.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

In the preceding unit in the string, replace the FRU in Table 19.
SPCN optical adapter (A) in the preceding unit in the string.
SPCN optical adapter (B) in the failing unit.
SPCN optical cables (C) between the preceding unit in the string and the failing unit.

This ends the procedure.

        (A) SPCN
         Optical            .----- (C) SPCN
         Adapter ----.      |      Optical Cables
                     |      |
                     |      |      .-- (B) SPCN
.---------.          |      |      |      Optical
| System  |          |      |      |      Adapter
| Unit    |          V      |      V
| SPCN 0  |        .-.      V     .-.
'----.----'        | +------------+ |
    |              | +------------+ |
.----'----. .-------'-+    .-------'-+ .---------.
|Sec J15  | |  Sec J16|    |Sec   J15| |    Sec  |
|Unit  J16+-+J15 Unit |    |Unit  J16+-+J15 Unit |
|  1      | |      2  |    |  3      | |      4  |
'---------' '---------'    '---------' '---------'
                               ^
                               |
                               |
                               '--- Failing Unit

Perform the following:

Power off the system.
Disconnect the SPCN frame-to-frame cable from the connector of the first unit that cannot be powered on.
Connect the negative lead of a multimeter to the system frame ground.
Connect the positive lead of the multimeter to pin 2 of the SPCN cable.
Note:

Use an insulated probe or jumper when performing the voltage readings.
Note the voltage reading on pin 2.
Move the positive lead of the multimeter to pin 3 of the SPCN cable.
Note the voltage reading on pin 3.

Is the voltage on both pin 2 and pin 3 from 1.5 V dc to 5.5 V dc?

No: Continue with the next step.

Yes: Exchange the following FRUs one at a time:

Iin the failing unit, replace the following:

Table 20.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

In the preceding unit in the string, replace the FRU in Table 20.
SPCN frame-to-frame cable.

This ends the procedure.

Perform the following:

Follow the SPCN frame-to-frame cable back to the preceding unit in the string.
Disconnect the SPCN cable from the connector.
Connect the negative lead of a multimeter to the system frame ground.
Connect the positive lead of a multimeter to pin 2 of the connector.
Note:

Use an insulated probe or jumper when performing the voltage readings.
Note the voltage reading on pin 2.
Move the positive lead of the multimeter to pin 3 of the connector.
Note the voltage reading on pin 3.

Is the voltage on both pin 2 and pin 3 from 1.5 V dc to 5.5 V dc?

Yes: Exchange the following FRUs one at a time:

SPCN frame-to-frame cable.

In the failing unit, replace the following:

Table 21.
Enclosure	FRU
5088, 0588	Tower backplane assembly
5094, 5294, 8094-002	Tower backplane assembly
5095, 0595	Tower backplane assembly
7311-D11, 7314-G30, 5790 or 5796	I/O backplane
7311-D20	I/O backplane

In the preceding unit in the string, replace the FRU in Table 21.

This ends the procedure.

No: Exchange the FRU in Table 21 from the unit from which you disconnected the SPCN cable in the previous step of this procedure.
This ends the procedure.