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93. DC power supply and fan unit cabling scheme - dual-level redundancy ..........114
94. DC power supply connector - PIN positions ....................114
95. DC wiring from DS4700 Express to disconnect device and dc power source ........115
96. Power supply and fan unit LEDs.........................126
97. DC power supply and fan unit LEDs .......................127
98. Front LEDs and controls ...........................128
99. Battery unit LEDs ..............................129
100. Rear controller LEDs, controls, and connectors - Model 70 ...............130
101. Rear controller LEDs, controls, and connectors - Model 72 ...............130
102. Numeric display LEDs ............................132
103. Cache Active LEDs .............................141
104. Battery unit LEDs ..............................143
105. Unlocking the SFP module latch - plastic variety ...................147
106. Unlocking the SFP module latch - wire variety ...................148
107. Removing a controller from the DS4700 Express ..................148
108. Installing a controller .............................149
109. Removing and replacing a bezel.........................150
110. Hot-swap E-DDM LEDs ............................154
111. E-DDM CRU handle .............................154
112. Link rate LEDs ...............................163
113. Link rate switch ...............................163
114. Replacing a power supply and fan unit ......................168
115. Replacing a dc power supply and fan unit .....................174
116. Removing and replacing a battery unit from the controller chassis ............176
117. Replacing an SFP module ...........................178
118. Front cage frame screw locations ........................180
119. Screws holding the top and bottom sides of the chassis to the cage frame .........181
120. DS4700 Express Storage Subsystem parts list ...................189
121. Front rack mounting template..........................196
122. Rear rack mounting template ..........................197
Figures xi