IBM FlashSystem 900, Service Manual

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3746-900 MAPs
MAP 2710: 3746-900 Any Intermittent ESCA Problem
Symptom Explanation Conditions That Could Cause This Symptom
ESCA reported problem
Host reporting error on
Host/3746-900 fiber optic link
¹
ESCP
¹
ESCC
¹
Fiber optic
001
You are here because a host system or connected node indicated an error on the 3746-900 host fiber
optic link or you have been leaded here under the guidance of the
Enterprise System Connection Link
Fault Isolation ZZ22-9473 manual.
¹
You should be logged ON on the service processor console. If not go to “Console Use for
maintenance” on page 1-1 for logging ON and return here.
¹
On the "MOSS-E View" window, double click on the 3746-900 on which you want to work.
¹
A according to the status of the 3746-900 (offline or online), run diagnostic on the ESCP suspected
using either “MAP 6010: How to run 3746-900 Diagnostic in Offline Mode” on page 3-43 or “MAP
6000: How to run 3746-900 Diagnostic in Concurrent Mode” on page 3-17.
Does the diagnostic run error-free?
Yes No
002
Exchange the faulty element (ESCP or ESCC). Go to “3746-900 Maintenance Using a FRU list” on
page 1-28.
003
Run the manual assurance test (MAT) using the specific wrap plug installed in the ESCC fiber optic posi-
tion. According to the status of the 3746-900, run MAT diagnostic on the ESCC suspected using either
“MAP 6020: How to Run 3746-900 Specific Diagnostics” on page 3-45 if the 3746-900 is set in Offline
mode, or “MAP 6000: How to run 3746-900 Diagnostic in Concurrent Mode” on page 3-17 if the
3746-900 is set in Online Mode.
Does the MAT diagnostic run error-free?
Yes No
004
Exchange the faulty ESCC. Go to “3746-900 Maintenance Using a FRU list” on page 1-28.
005
Perform the optical power measurement.
¹
Use the Problem Determination Procedures, Maintenance Information for Enterprise Systems Con-
nection Links, SY27-2597.
¹
To do this you must to set the specific ESCC to transmit offline sequence, using the following proce-
dure from the service processor.
– From the "3746-9x0 Menu", click on the "Configuration Management" option.
– Double click on the "Manage ESCON Processors" option.
– On the "ESCP Management Resource Selector" window, select the ESCP on which you want the
measurement. Then click on "OK".
– On the "ESCON configuration Lines" window, select "Options" (in the action bar). Then select the
"Manage ESCC status" option..
– On the "ESCC status Management" window, select the "Transmit offline sequence".
¹
Return or refer to the Enterprise System Connection Link Fault Isolation ZZ22-9473 manual to con-
tinue the problem determination.
Chapter 2. MAPs for FRU Isolation
2-89