Figures

1 Introduction

1–1. Setting Up the MLX-20L Console

1-4

1-2. Setting Up the PC

1-5

1-3. External Modem Setup

1-7

1-4. The SPM Display

1-12

1–5. Removing the Control Unit Housing

1-17

1–6, Disconnecting AC Power

1-18

1-7.Maintenance Strategy

1-19

 

4

Control Unit Problems

 

 

4–2. Replacing a Ring Generator

4-7

 

4-3. Replacing an Auxiliary Power Supply

 

4-9

 

4–4. Inserting a Memory Card

4-20

 

4-5. Replacing the Feature Module

 

4-32

 

4–6. Module Test Process

 

4-34

 

4-7. Inserting the Upgrade Memory Card

4-62

 

4–8. 551 T1 CSU Loopback Connection

 

4-74

 

4–9. ESF T1 CSU DTE Loopback Connection

 

4-74

 

4-10. Acculink 3150 CSU Front Panel

4-75

 

4-11. Acculink 3150 CSU DTE Loopback Commands 1

 

4-75

 

4-12.Acculink 3150 CSU DTE Loopback Command 2

4-76

 

4-13. Acculink 3150 CSU DTE Loopback Command 3

4-76

 

 

4-14. Acculink 3150 CSU DTE Loopback Command 4

4-77

 

Maintenance and Troubleshooting vii

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Image 304
AT&T 3.0 manual Figures