Symptom Explanation Conditions That Could Caus. Thl8 Symptom Status code not indicated at the
•
3174 Operator panel, or status code
•
is not known.
~
Try to obtain a status code by the following:
- Check a failing display.
Status code is indicated at the failing display . Status code is stored In 3174; use test 1 event log .
- At a working 3278 or equivalent display, use test 1 event log (option 2). See "Test 1: Display Logs Menu" on page 2-169.
Did you find a status code?
Yes No
110021
Continue with the next symptom in the "Initial Symptom Chart" on page 2-6.
Use the status code to find the repair action in the 3174 Status Codes manual.
2-12
3174 Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R Maintenance Information~
Scan the following chart sequentially and match your terminal failure with one of the symptoms in the chart; then take the action specified for that symptom.
SYMPTOM ACTION
Status code 3233 or 399 09 Go to Step 005.
All attached terminal devices are failing Go to Step 002.
One or more attached terminal devices are failing Go to "MAP 0210: Terminal Adapter Card Isolation" on page 2-15.
Symptom not known Run the Device Summary Test (3) (See "Test 3:
3270 Device Status Information" on page 2-177) or get more information from the customer and use this Symptom Chart again.
1 002
1
(From step 001)
- Perform an Alt 2 IML. See "Alt 2 IML Procedures (Test 82)" on page 1-56.
Is 2082 displayed?
Yes No
110031
Use the status code to find the repair action in the 3174 Status Codes manual.
Further isolation is required. Go to "MAP 0210: Terminal Adapter Card Isolation" on page 2-15.
1005
1
(From step 001)
Press the Advance key as many times as required to display the card type(s) and location(s) of the failing Terminal Multiplexer adapter card(s).
Verify that the Terminal Multiplexer card input cable(s) is correctly attached and is connected to a terminal adapter card port (0,8,16, or 24). See Figure 1-3 on page 1-8.
(Step 005 continues)
MAP 0200 (continued)
005 (continued)
Is the cable correctly attached?
Yes No
110061
After connecting the coax cable(s), perform a normal IML to return the 3174 to operational status.
See "Normal Initial Microcode Load (IML)" on page 1-53.
Verify the repair action.
Perform an Alt 2 IML. See "Alt 2 IML Procedures (Test 82)" on page 1-56.
When status code 3233 is displayed, press the Enter key on the operator panel to display the 4001 prompt message.
Note the failing terminal adapter card port number (0, 8, 16, 24) as determined in Step 005, and go to Step 003 (ENTRY POINT A) of "MAP 0210: Terminal Adapter Card Isolation" on page 2-15.
2-14
3174 Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R Maintenance InformationSymptom Explanation Conditions That Could Cause This Symptom Terminal device(s) failing.
•
Defective terminal adapter card (see Note).•
Defective terminal adapter output cable at one of its ports.•
Multiple device problems.Note: You can determine the physical location of the terminal adapter card by checking card locations 21, 22, 23 for the card with coax connectors labeled 0, 8, 16,24.
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: If the 3174 is a channel-attached model, go offline (indicator on); then set the Power Control switch to the Local position before switching power off. See "How to Take the 3174 Offline (Models 1L and 11 L Only)" on page 2-287.
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Is the failing port number known?
Yes No'
110021
To identify the failing port, use:
a. The Subsystem Cabling Worksheets, and see Figure 1-3 on page 1-8.
b. Online Test 3. See "Test 3: 3270 Device Status Information" on page 2-177.
Then continue with Step 003.
(From step 002)
Run a wrap test to the failing port at the terminal adapter card. (Use online test 10 option 1,xx (xx
=
00,08,16,24)).Note: 00 = Port 0-7, 08= Port 8-15, 16= Port 16-23, 24= Port 24-31.
See "Test 10: Port Wrap Tests" on page 2-209. If unable to run online use the following offline method.
Install the Utility diskette irho drive 1.
ENTRY POINT A (from Step 007 in MAP 0200)
See "How to Load the Test Monitor" on page 2-119. If status code 3233 is displayed, press the Enter key to display the 4001 prompt message.
Key in 2601 and press Advance.
Key in the port number as labeled at the terminal adapter card, 00, 08, 16, or 24 and press Enter.
Note: 00 = Port 0-7, 08 = Port 8-15, 16 = Port 16-23, 24 = Port 24-31.
Use the display message or see the 3174 Status Codes manual to verify your wrap test results for success or failure.
(Step 003 continues)
MAP 0210 (continued)
003 (continued)
Does the status code indicate a failure?
Yes No
110041
Go to Step 008.
Note: The failure may have been caused by Signal reflections from the cable or by a shorted cable.
- Disconnect the failing port's output cable at the terminal adapter card.
- Run the wrap test to the failing port again.
Does the failure stili occur?
Yes No
110061
Reconnect the port output cable.
Go to Step 008.
Replace the terminal adapter card in location 22 or 23 or replace the file/terminal adapter card in location 21.
Return the 3174 to operational status with a normal IML from the Control diskette or from the fixed disk.
See "Normal Initial Microcode Load (IML)" on page 1-53.
1008
1
(From steps 004 and 006)
Is the problem a Status Code 3233 failure?
Yes No
110091
Go to "MAP 0220: Terminal Attachment Configuration Chart" on page 2-17.
- Check the TMA input cable for an open or shorted condition.
Is the TMA input cable defective?
Yes No
~
Replace the TMA card.Note: If the card is not available, perform a normal IML. Then, bypass the status code (3233) keying in a 1 and pressing the Enter key to allow the normal IML to proceed.
Repair or replace the TMA input cable.
Return the 3174 to operational status with a normallML from the Control diskette or from the fixed disk.
See "Normal Initial Microcode Load (lML)" on page 1-53.
2-16
3174 Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R Maintenance InformationTo identify your device configuration use:
1. The Subsystem Cabling Worksheets.
2. The customer's equivalent subsystem cabling configuration.
Scan the following chart sequentially and match your failing device location and its cable to one of the attachments in the chart; then take the appropriate action.
SYMPTOM ACTION
Device{s) attached to a TMA card in the 3174. Go to "MAP 0230: TMA Card Isolation" on page 2-18.
Device{s) attached to a 3299 Model 2, 3 (wrappable). Go to "MAP 0240: 3299 Model 2,3 Isolation" on page 2-23.
Device{s) attached to a 3299 Model 1 (nonwrappable). Go to "MAP 0250: 3299 Model 1 Isolation" on page 2-29.
Device attached directly to a terminal adapter card port. Go to "MAP 0260: Terminal{s) or Printer{s) Isolation" on page 2-33.