Install an intrusion switch . . . . . . . . . 115
Lenovo Neptune (TM) liquid assisted cooling
module replacement (trained technicians only) . . . 117
Remove the Lenovo Neptune (TM) liquid
assisted cooling module . . . . . . . . . 117
Install the Lenovo Neptune (TM) liquid
assisted cooling module . . . . . . . . . 120
Memory module replacement . . . . . . . . . 124
Remove a memory module . . . . . . . . 125
Install a memory module . . . . . . . . . 126
M.2 backplane and M.2 drive replacement . . . . 129
Remove the M.2 backplane and M.2 drive. . . 129
Adjust the retainer on the M.2 backplane . . . 132
Install the M.2 backplane and M.2 drive. . . . 132
MicroSD card replacement . . . . . . . . . . 135
Remove the MicroSD card . . . . . . . . . 135
Install the MicroSD card. . . . . . . . . . 137
OCP module replacement . . . . . . . . . . . 138
Remove the OCP module . . . . . . . . . 138
Install the OCP module . . . . . . . . . . 139
PCIe adapter replacement. . . . . . . . . . . 140
Remove a PCIe adapter . . . . . . . . . . 140
Install a PCIe adapter . . . . . . . . . . . 142
Power supply unit air baffle replacement . . . . . 143
Remove a power supply unit air baffle . . . . 143
Install a power supply unit air baffle baffle . . . 145
Processor and heat sink replacement (Trained
technicians only) . . . . . . . . . . . . . . 147
Remove a heat sink . . . . . . . . . . . 148
Remove a processor . . . . . . . . . . . 150
Install a heat sink . . . . . . . . . . . . 151
Install a processor . . . . . . . . . . . . 153
Power inverter board (PIB) replacement . . . . . 154
Remove the PIB board . . . . . . . . . . 154
Install the PIB board . . . . . . . . . . . 155
Rack latches replacement . . . . . . . . . . . 156
Remove the rack latches . . . . . . . . . 157
Install the rack latches . . . . . . . . . . 158
RAID flash power module replacement. . . . . . 159
Remove the RAID flash power module on the
chassis . . . . . . . . . . . . . . . . 160
Install the RAID flash power module on the
chassis . . . . . . . . . . . . . . . . 161
Remove the RAID flash power module on the
system board tray . . . . . . . . . . . . 164
Install the RAID flash power module on the
system board tray . . . . . . . . . . . . 165
Remove the RAID flash power module on the
riser . . . . . . . . . . . . . . . . . 167
Install the RAID flash power module on the
riser . . . . . . . . . . . . . . . . . 168
Rear drive assembly replacement . . . . . . . . 169
Remove the 2.5-inch rear drive assembly . . . 169
Install the 2.5-inch rear drive assembly . . . . 171
Remove the 7mm rear drive assembly . . . . 174
Install the 7mm rear drive assembly . . . . . 175
Riser card replacement . . . . . . . . . . . . 176
Remove a riser card . . . . . . . . . . . 178
Install a riser card . . . . . . . . . . . . 181
Security bezel replacement . . . . . . . . . . 183
Remove the security bezel . . . . . . . . . 183
Install the security bezel. . . . . . . . . . 184
Serial port module replacement . . . . . . . . 187
Remove a serial port module . . . . . . . . 187
Install a serial port module . . . . . . . . . 189
System board assembly replacement (Trained
technicians only) . . . . . . . . . . . . . . 191
Remove the firmware and RoT security
module . . . . . . . . . . . . . . . . 194
Install the firmware and RoT security
module . . . . . . . . . . . . . . . . 195
Remove the system I/O board or processor
board . . . . . . . . . . . . . . . . . 199
Install the system I/O board or processor
board . . . . . . . . . . . . . . . . . 203
System fan replacement . . . . . . . . . . . 208
Remove a system fan. . . . . . . . . . . 209
Install a system fan. . . . . . . . . . . . 210
Top cover replacement . . . . . . . . . . . . 212
Remove the top cover . . . . . . . . . . 212
Install the top cover . . . . . . . . . . . 213
Complete the parts replacement . . . . . . . . 215
Chapter 6. Internal cable routing . . . 217
Identifying connectors . . . . . . . . . . . . 217
Drive backplane connectors . . . . . . . . 217
CFF RAID/HBA adapter. . . . . . . . . . . . 222
Front I/O module cable routing . . . . . . . . . 224
Intrusion switch . . . . . . . . . . . . . . . 226
RAID flash power modules . . . . . . . . . . 227
Rear NVMe/SATA drive backplane . . . . . . . 232
7mm drive backplane . . . . . . . . . . . . 235
M.2 drive backplane cable routing . . . . . . . 239
Liquid assisted cooling module cable routing . . . 242
Power/Sideband cable routing . . . . . . . . . 244
2.5-inch drive backplane (signal) . . . . . . . . 247
4 x 2.5'' front drives . . . . . . . . . . . 247
8 x 2.5'' front drives . . . . . . . . . . . 256
10 x 2.5 front drives . . . . . . . . . . . 262
16-EDSFF drive backplane cable routing . . . 279
Chapter 7. System configuration . . . 281
Set the network connection for the Lenovo XClarity
Controller . . . . . . . . . . . . . . . . . 281
ii ThinkSystem SR635 V3 User Guide