Symptom Explanation Conditions That Could Cause This Symptom Terminal or terminals attached to a
•
No AC power to the 3299.3299 Model 2 or 3299 model 3 fail.
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3299 input and output cables incorrectly connected.The 3299 is a repai r center product
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Defective signal cable to 3299 input.and is not to be serviced by the
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Defective 3299.on-site CEo Problem determination
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The attached terminal is failing.(PO) on the 3299 is a customer
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The attached terminal signal cable is failing.responsibility. This MAP has been
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Replacing a 3299-2 or 3299-3 with a 3299-1.included to help you do subsystem
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Multiple terminals and signal cables are failing.PO when a 3299 is involved.
CAUTION:
To avoid the possibility of electrical shock, switch off power and disconnect power cord before
disconnecting cables or removing a component, such as the planar board, power supply, or diskette drive.
(For translations of this safety notice, see Safety Notice 10 in IBM 3174 Safety Notices, GA27-3824.) Warning: Before swapping any cables, see "Device Signal Cable Connectors" on page A-6 for a description of potential cable connector mismatch problems.
~
Do you know which terminal or terminals are failing?
Yes No
110021
Run test 3 to obtain the status of all attached terminals, or get more information from the customer about the failure. See "Test 3: 3270 Device Status Information" on page 2-94.
Continue with Step 003.
(From step 002)
Is more than one terminal attached to the same 3299 failing?
Yes No
110041
A single terminal attached to the same 3299 is failing. Note the failing port number, and go to Step 023 on page 2-17.
Are all terminals that are attached to the same 3299 failing?
Yes No
110061
- Some terminals attached to the same 3299 are failing. Go to Step 023 on page 2-17.
(Step 007 continues)
Chapter 2. Diagnostic Information
2-15
MAP 0230 (continued)
007 (continued)
Note: Either the 3299 or its attached input cable is causing the problem.
- Verify that the input and output cables are correctly attached to the 3299. See Figure 1-3 on page 1-6.
Is the 3299 red indicator on?
Yes No
Ilooal
Verify that the power cable is inserted into the 3299 and is also plugged into a working outlet.
- Replace the 3299 with the same model.
Are eight terminals attached to the same 3299?
Yes No
§J
- Go to Step 016.
Do you have a spare 3299 that is the same model as the suspect 3299?
Yes No
§J
- Go to Step 035 on page 2-18.
- Swap the 3299 with the spare.
Does the failure still occur?
Yes No
§J
Notify the customer that the original 3299 is failing.
- Insert the Control diskette and continue normal operations.
The 3299 input cable is defective.
~
(From step 010)
Note: Isolate the failure to the 3299 or Its input cable.
Disconnect all the output cables from the 3299 port(s).
Run a wrap test to all (eight) 3299 port locations and stop testing at the first good port. Run the online test 10 option 2,xx (00-07). See IITest 10: Port Wrap Tests" on page 2-116.
If unable to run the wrap tests online, use the offline method. See IIHow to Run Terminal Adapter/3299 Optional Tests HG 26" on page 2-78.
Use the status code on the terminal or the operator panel to verify the wrap test results. See the 3174 Status Codes manual.
(Step 016 continues)
2-16
3174 Models 81R through 92R Maintenance Information016 (continued)
Did all eight ports fail the wrap test?
Yes No
§J
- Reconnect the 3299 output cables. Go to Step 040 on page 2-19.
Do you have a spare 3299 that is the same model as the suspect 3299?
Yes No
§J
Go to Step 035 on page 2-18.
- Swap the 3299 with the same model, but do not connect the output port cables.
- Run the wrap tests again.
Did all eight ports still fail the wrap test?
Yes No
~
Reconnect the 3299 output cables.Insert the Control diskette and press IML.
Continue normal operations.
- Reconnect the 3299 output cables.
- Insert the Control diskette and press IML.
The 3299 input cable is defective.
1023
1
(From steps 004 and 006)
Note: Isolate the failure to the 3299 or to the terminal and its input cable.
Run the wrap test to the failing 3299 port location (run the online test 10 option 2,xx (00-07).
If unable to run the wrap test online, use the offline method. See "How to Run Terminal Adapter/3299 Optional Tests HG 26" on page 2-78.
Use the status code on the terminal or the operator panel to verify the wrap test results. See the 3174 Status Codes manual.
Does the status code indicate a failure(s)?
Yes No
110241
Go to "MAP 0250: Terminal Isolation" on page 2-25.
(Step 025 continues)
Chapter 2. Diagnostic Information
2-17
025 (continued)
Note: The failure may be caused by a signal reflection from the cable.
- Disconnect only the output cable from the 3299 port that failed the wrap test.
- Perform the wrap test on the failing port(s) again.
Does the wrap test still fail?
Yes No
1
1026
1
- Reconnect the 3299 output cable(s). Go to "MAP 0250: Terminal Isolation" on page 2-25.
Is the failing terminal the only one attached and configured with this 3299-2?
Yes No
1 1028 1
- Reconnect the 3299 output cable(s). Go to Step 040 on page 2-19.
- Verify that the input and output cables are correctly attached to the 3299. See Figure 1-3 on page 1-6.
Is the 3299 red indicator on?
Yes No
11030 1
Verify that the power cable is inserted into the 3299 and is also plugged into a working outlet.
- Replace the 3299 with the same mode/.
Do you have a spare 3299 that is the same model as the suspect 3299?
Yes No
110321
- Reconnect the 3299 output cable. Go to Step 035.
- Swap the 3299 with the spare, but do not connect the output cable(s).
- Run the wrap test again.
Does the failure still occur?
Yes No
110341
Insert the Control diskette.
- Continue normal operation.
(From steps 012,019, and 032)
- Reconnect the 3299 output cable(s) if previously disconnected.
(Step 035 continues)
2-18
3174 Models 81R through 92R Maintenance Information035 (continued)
Note: Isolate the failure to the 3299 or its input cable.
Attach the 3299 input cable to a working 3278 or equivalent terminal and check for a READY indication.
A READY indication will display either an S, 4, or 6 in the operator information area of the terminal.
If offline, insert the Control diskette and do a normal IML to load the operational code.
Is a ready indication displayed ( S, 4, or 6) in the operator information area?
Yes No
110361
The 3299 input cable is defective.
The 3299 is defective. It must be replaced with the same model (3299-2).
Does the failure still occur?
Yes No
110381
Insert the Control diskette.
- Continue normal operations.
Further isolation is required. Go to "MAP 0250: Terminal Isolation" on page 2-25.
1040
I
(From steps 017 and 028)
Note: Isolate the failure to the 3299 or to the terminal and its input cable.
At the 3299, move the failing port location's cable to a working port location and check for a READY indication. A READY indication will display either an S, 4, or 6 in the operator information area of the terminal.
If offline, insert the Control diskette and do a normal IML to load the operational code.
Warning: When you are swapping terminal cables and the terminals are different or the screen size or features are not the same, addressing problems may occur that can affect system operation.
Is the READY indicator still off?
Yes No
~
The 3299 is defective. It must be replaced with the same model.Further isolation is required. Go to "MAP 0250: Terminal Isolation" on page 2-25.
Chapter 2. Diagnostic Information