Section 5 5215 Printer Isolation - IBM 6580 Product Support Manual

9. Run the Track Step Test (RNA Test T) while flexing
(moving) the following:
- The cables referenced in Step 2
- The diskette drive cable, diskette drive cable
connectors 63, 64, and the file control card
- The stepper motor cable and connector.
• Failure - Check the cable and connector.
• No Failure - Continue with this procedure.
10. Run the Diskette Stepper Motor Phase Test (RNA
Test M)
• Failure - See Section 15 for failure codes. Reseat
the system and diskette adapter cards. Check the
cables and connectors referenced in Steps 2 and
9, and check the track stepping mechanisms.
• No Failure - Continue with this procedure.
11. Run the Diskette Stepper Motor Phase Test (RNA
Test M) while flexing (moving) the cables and con-
nectors referenced in Steps 2 and 9.
• Failure - Check the cable and connector.
• No Failure - Continue with this procedure.
12. Run the Diskette Drive Set Ready Test (RNA Test L)
Failure - See Section 15 for failure codes. Reseat
the system and diskette adapter cards. Check the
cables and connectors referenced in Steps 2 and
9, and check the track stepping mechanisms.
• No Failure - Continue with this procedure.
INTERMITTENT PROBLEM DIAGNOSTIC APPROACH - Section 5 5215 Printer
-111-
13. Run the Diskette Drive Set Ready Test (RNA Test L)
SECTION 5 5215 PRINTER ISOLATION
while flexing (moving) the cables and connectors
referenced in Steps 2 and 9.
• Failure - Check the cable and connector.
• No Failure - Check all ground wires for a good
ground.
NOTE:
If you suspect another area, see that section. If
not, see Section 9.
Did the customer have a service request number leading to
this area?
YES, loop on the printer MDls and see Section 13,
"Service Request Numbers."
NO, follow the procedure below:
1. Loop on printer MDls
• Failure - Print the trace table, and perform the
fix as instructed.
• No Failure - Continue with this procedure.
2. Loop on printer MD Is while flexing (moving) the
following:
•
- The internal distribution cable and internal
distribution cable connectors 0 and 61-6
- The printer cable and printer cable connector 0
- The I/O connector in the printer
Failure - Print the trace table, and check the
cable and connector.
• No Failure - Continue with this procedure.
3. Thoroughly exercise the printer using the Printer
Tests Diagnostic/Adjustment.
• Failure - Perform any adjustments or repairs
needed.
• No Failure - Check all ground wires for a good
ground; perform a static voltage check; and check
all adjustments that affect the feedback circuits
and timing.
NOTE: If you suspect another area, see that section. If
not, see Section 9.