Polycom DOC2238A User Manual download pdf (Page 144)

Chapter 5 - System Maintenance

5-12

3. Using a standard Phillips screwdriver, remove six spring-loaded screws

from the fans cover on the MCU’s rear panel.

4. Optional. Remove the two jack connectors from the fan panel to

completely remove the fans from the MCU.

5. Disconnect the AC input (J1) and the 12V/5V Sense connectors (J2).

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 ... 159 160

Polycom MGC+50/ 1
Trademark Information 2
Patent Information 2
Table of Contents 3
Before You Begin 9
Chapter 1 - Before You Begin 10
MGC+ Unit Main Features 11
MGC+50/MGC+100 Specifications 12
• Conference 14
• Channel 14
MGC+ Control Unit 15
Scope of Manual 16
Conventions 17
List of Abbreviations 18
Hardware Installation 21
MGC+100 Hardware Installation 22
System Safety 22
Rack Mount Safety Precautions 23
— ESD: +8 kV 24
Foam Block 25
Wood Packing Case 25
Screw mounting 27
19" Attachment Bar 28
Item #3 29
Item #4 30
Panel from the MGC+ Unit 34
Table 2-2 on page 2-12 36
ISDN network 40
Mounting 42
MPI-8 MPI-8 45
MGC+50 Hardware Installation 46
Mounting the MGC+50 on a Rack 48
and T1-CAS network: 55
MPI Box 57
LED is flashing 60
Rescue Disk (pSOS) 61
• LAN.CFG File 63
• Cross over cable 63
• Keyboard and mouse 63
, click the 66
Properties button 66
Boot File 70
Clocking 72
System Architecture 73
Information Flow 77
MGC+ Manager Interface 79
Power Supply Flow 79
Hardware Description 81
MGC+100 Components Location 82
MGC+50 Components Location 85
ReadiManager IAM 87
Control Unit 88
Control Bus 91
Information Highway 92
Powerplane 92
Power Supply Module 93
Power Module in the MGC+50 94
Power Supply Cord 94
Circuit Breaker (AC Power) 94
Alarms Port 95
Functional Modules 96
• Audio+24/48 - 24/ 97
• Audio+48/96 - 48/ 97
• Audio+12/24 - 12/ 97
• T.120-12 standard 98
• T.120-24 card - 24 98
Backplane 102
IP+ Network Interface Module 103
Module Port Capacity 104
T1 ISDN line 108
(23 channels) 108
MUX+ Module 111
MUX+ Card Properties 112
MUX+ Port Capacity 113
MUX+ Participant Move Options 114
MUX+ Resource Report 115
Audio+ Module 117
Audio+ Module Architecture 118
Audio+ Port Capacities 118
Video+ Module 120
Video+ Module Architecture 121
Data Module 122
Input/Output (I/O) Boards 123
Audio+ Music I/O Card 127
Music I/O card 128
MUX+ Video Slides 131
System Maintenance 133
Controls and Indicators 134
MGC+ Unit Rear Panel 139
AC Inlet 140
Main Switch 140
Corrective Maintenance 141
Replacing a Functional Module 142
• Compact Flash 128MB Disk 150
Product warranty will 151
Verifying the Dongle 152
Shutting Down the MGC+ 50/100 153
Troubleshooting 154
Appendix A: Interfaces Pin 155
Assignment 155
LAN PIN Assignment 156
Alarms Port Pin Assignment 156
RS-232 Pin Assignment 157

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Polycom DOC2238A User Manual Page 144

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