Displaying the Level of the MAE LIC ........................ 2-3
Installing a New Version of the LIC and Firmware ................. 2-5
Installing MCF on the MAE .............................. 2-6
Removing Microcode Fixes on the MAE ..................... 2-10
Displaying a MAE Configuration .......................... 2-12
Chapter 3. Multiaccess Enclosure Problem Determination ......... 3-1
Multiaccess Enclosure Power Supply ....................... 3-1
System Card LEDs ................................. 3-1
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Power Supply Status ................................ 3-3
System Card Status ................................. 3-3
SAC Card Status .................................. 3-3
Adapter Card Status ................................ 3-3
Important Phone Numbers .............................. 3-4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Diagnosing Hardware Problems .......................... 3-5
Diagnosing Operational Code and Configuration Problems .......... 3-5
Maintenance Actions and Procedures ...................... 3-5
MAP 0300: Multiaccess Enclosure Basic Verification ............. 3-6
MAP 0310: Parallel Channel Problem Isolation ............... 3-16
MAP 0320: Verifying Repair Action for Parallel Channel .......... 3-17
Preparing the Multiaccess Enclosure Hard Disk ............... 3-18
Adapter Wrap Plugs (Service Kit - Part Number 30L6123) ......... 3-20
LIC 282, LIC 290, and LIC 291 External Wraps ................ 3-21
External Wrap Testing Parallel Channel Adapters ................ 3-23
Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Rules for Parallel Channel Adapter Testing .................. 3-23
Preparing the Wrap Blocks ............................ 3-24
Running the Parallel Channel Adapter External Wrap Tests ........ 3-27
Installing and Removing Channel Adapters .................... 3-33
Parallel Channel Attachment ........................... 3-33
V-Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
Channel Interface Cables ........................... 3-37
Using Interconnected V-Cables ......................... 3-38
Installing Channel Feature 3299 ........................ 3-39
Parallel Channel Adapters Installation and Removal ............. 3-40
Installing Channel Adapters .......................... 3-40
Removing Channel Adapters ......................... 3-43
ESCON Channel Adapter Cable Installation .................. 3-44
Installing Optical Fiber Cables ........................ 3-44
Channel Interface Cable Replacement Procedure .............. 3-46
Removing a Channel Interface Cable .................... 3-46
Reinstalling the Channel Interface Cable .................. 3-46
Routing the Adapter Cables through the Cable Guides ........... 3-47
Releasing the Device to Your Customer .................... 3-47
Chapter 4. Multiaccess Enclosure FRU Exchange .............. 4-1
Prerequisite Before some FRU Exchanging .................... 4-2
Exchanging a Power Supply ............................. 4-4
Exchanging the System Card ............................. 4-5
Exchanging the SAC ................................. 4-24
Exchanging the Hard Drive on the System Card ................. 4-25
Exchanging the Memory on the System Card .................. 4-32
iv 3746-9X0: MAE Installation and Maintenance
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