Symptom Explanation Conditions That Could Cause This Symptom File failures-Diskette Drives or
•
Diskette Media failureFixed Disk Drives
•
Diskette Drives (location 01 or 02) defective.•
Fixed Disk Drives (location 03 or 04) defective.•
File Adapter Card (location 21) defective.•
Processor card (location 18) defective.•
Storage card(s) defective.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 (Models 1L and 11L), 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 1 Land 11 L Only)" on page 2-287.
~
Is the failing drive a diskette drive? (HG 01 or 02) Yes No
110021
Install the Utility diskette into drive 1 or use the fixed disk if Utility microcode is on the fixed disk.
Perform a basic test on the failing fixed disk drive (HG03 or HG04). See "Hardware Group Basic Tests" on page 2-115.
If the test completes with a status code of 20HG, go to Step 008 on page 2-51.
If the test completes with a status code of 29HG, go to Step 004.
If the status code is other than 20HG or 29HG, use the 3174 Status Codes manual for the repair action.
Exchange the diskette in the drive indicated by the HG number.
Exchange the FRU indicated by TYPE and LOCA, and test again.
If the failure continues and two diskette drives are present, exchange the other drive with the one just removed in the previous step, and test again.
Exchange the file adapter in location 21 with the same card type.
Perform a normal IML and return the controller to the customer. See "Normal Initial Microcode Load (IML)" on page 1-53.
1 004
1
(From step 002)
Remove the Operator Panel and observe the fixed disk drive (HG 03 or 04).
Feel for any vibrations through the housing to determine if the files are turning.
When switching power on the 3174, the first fixed drive (HG 03) should start then the second fixed drive (HG 04) should start.
(Step 004 continues)
2-50
3174 Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R Maintenance Information1'
0051
Check for bent or broken pins on the board socket that the drive is plugged into.
Check for
+
12 volts DC at the logic board. See the figure on page 1-49 and Table 1-5 on page 1-49.If connections and power are correct, go to Step 007.
Note: When the power is switched to ON, the red indicator on the fixed disk will blink one short blink followed by three blinks.
Does the Red indicator on the front of the fixed disk blink as described when the power switch is moved to the "ON" position?
Yes No
1'
007 1Replace the fixed disk.
Perform the Fixed Disk Full Format test (HG 03 or 04, FN 33). See" Fixed Disk Drive Full Format (FN 33)" on page 2-128.
Warning: This function will erase all previously recorded information from the surface and should be used with extreme caution. The fixed disk will have to be rewritten with all required
operational microcode, features, RPQs, configuration data, etc., before this disk can be used again for system operation.
If the failure continues, exchange the file adapter (location 21) with the same card type and test again.
If the failure continues, exchange the processor card (location 18) with the same card type.
(From step 002)
- I nstall the Operator Panel.
- Perform the Fixed Disk Defect Fix test. See "Fixed Disk Surface Scan (FN 31)" on page 2-127.
Is 4408 displayed?
Yes No
1'
009 1Follow the instructions shown for the other completion code.
Warning: This function will erase all previously recorded information from the surface and should be used with extreme caution. The fixed disk will have to be rewritten with all required
operational microcode, features, RPQs, configuration data, etc., before this disk can be used again for system operation.
If the failure continues, exchange the processor card (location 18).
No new defects were found. You may have an intermittent problem.
- Replace the fixed disk drive. Go to Step 007.
MAP 0430 (continued)
010 (continued)
Exchange the file adapter (location 21) with the same card type.
Exchange the processor card (location 18) with the same type card.
Perform a normal IML and return the controller to the customer. See "Normal Initial Microcode Load (IML)" on page 1-53.
2-52
3174 Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R Maintenance InformationSymptom Explanation Conditions That Could Cause This Symptom Status Code 50 to 55.
•
Logic card location 19 defective.Note: The storage bus runs from
•
Logic card location 20 defective.location 18 (processor card)
•
Logic card location 17 defective.to locations 19 (1 st storage
•
Logic card location 18 defective.card), location 20 (second
•
Logic board is defective.storage card), and 17 (third storage card. See
Figure 1-7 on page 1-13.
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 (Models 1L and 11L), go offline (indicator on) and then set the Power Control switch to the Local position before switching power off. See "How to Take the 3174 Offline (Models 1 Land 11 L Only)" on page 2-287.
~
Turn the controller power off.
- If present, unseat storage cards in locations 17 and 20.
- Switch the controller power on.
Is the 5x status code displayed?
Yes No
110021
One of the cards that was unseated is causing the error. Power off the controller, then reseat one card. Power on and check for the 5x status code. Repeat until the defective card is found.
Turn the controller power off and replace the following, one at a time and verify the repair.
Storage card in location 19 Processor card in location 18
If the problem still exists, check the power supply voltages at the logic board. If the voltages are incorrect, replace the power supply.
If the problem still exists, replace the Logic board.