Remove the backplane for four 3.5-inch hot- 
swap drives .  .  .  .  .  .  .  .  .  .  .  .  .  .  131
Install the backplane for four 3.5-inch hot- 
swap drives .  .  .  .  .  .  .  .  .  .  .  .  .  .  132
Remove the backplane for eight 2.5-inch hot- 
swap drives .  .  .  .  .  .  .  .  .  .  .  .  .  .  134
Install the backplane for eight 2.5-inch hot- 
swap drives .  .  .  .  .  .  .  .  .  .  .  .  .  .  134
Remove the backplane for ten 2.5-inch hot- 
swap drives .  .  .  .  .  .  .  .  .  .  .  .  .  .  135
Install the backplane for ten 2.5-inch hot- 
swap drives .  .  .  .  .  .  .  .  .  .  .  .  .  .  136
Remove the rear backplane .  .  .  .  .  .  .  .  138
Install the rear backplane .  .  .  .  .  .  .  .  .  139
CMOS battery replacement .  .  .  .  .  .  .  .  .  .  142
Remove the CMOS battery .  .  .  .  .  .  .  .  142
Install the CMOS battery .  .  .  .  .  .  .  .  .  143
TPM adapter replacement.  .  .  .  .  .  .  .  .  .  .  145
Remove the TPM adapter .  .  .  .  .  .  .  .  .  145
Install the TPM adapter .  .  .  .  .  .  .  .  .  .  146
Rear hot-swap drive cage replacement .  .  .  .  .  147
Remove the rear hot-swap drive cage .  .  .  .  148
Install the rear hot-swap drive cage .  .  .  .  .  148
Middle drive cage replacement .  .  .  .  .  .  .  .  .  152
Remove the middle drive cage .  .  .  .  .  .  .  152
Install the middle drive cage .  .  .  .  .  .  .  .  155
M.2 adapter and M.2 drive replacement .  .  .  .  .  159
Remove the M.2 adapter and M.2 drive.  .  .  .  159
Adjust the retainer on the M.2 adapter .  .  .  .  162
Install the M.2 adapter and M.2 drive.  .  .  .  .  163
RAID super capacitor module replacement .  .  .  .  167
Remove a super capacitor module on the M.2/ 
riser support bracket .  .  .  .  .  .  .  .  .  .  .  167
Install a super capacitor module on the M.2/ 
riser support bracket .  .  .  .  .  .  .  .  .  .  .  168
Remove the RAID super capacitor module on 
the chassis .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  169
Install the RAID super capacitor module on 
the chassis .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  170
Front I/O assembly replacement .  .  .  .  .  .  .  .  172
Remove the front I/O assembly .  .  .  .  .  .  .  173
Install the front I/O assembly .  .  .  .  .  .  .  .  173
Hot-swap power supply replacement .  .  .  .  .  .  174
Remove a hot-swap power supply.  .  .  .  .  .  174
Install a hot-swap power supply .  .  .  .  .  .  179
Heat sink and microprocessor replacement .  .  .  .  184
Remove a heat sink .  .  .  .  .  .  .  .  .  .  .  184
Remove a processor .  .  .  .  .  .  .  .  .  .  .  185
Install a processor .  .  .  .  .  .  .  .  .  .  .  .  186
Install a heat sink .  .  .  .  .  .  .  .  .  .  .  .  188
Fan board replacement .  .  .  .  .  .  .  .  .  .  .  .  189
Remove the fan board .  .  .  .  .  .  .  .  .  .  189
Install the fan board .  .  .  .  .  .  .  .  .  .  .  190
Power inverter board (PIB) board replacement .  .  .  191
Remove the PIB board .  .  .  .  .  .  .  .  .  .  191
Install the PIB board .  .  .  .  .  .  .  .  .  .  .  192
System board replacement .  .  .  .  .  .  .  .  .  .  193
Remove the system board .  .  .  .  .  .  .  .  .  193
Install the system board .  .  .  .  .  .  .  .  .  .  195
Update the Vital Product Data (VPD) .  .  .  .  .  197
Configure security settings.  .  .  .  .  .  .  .  .  199
Complete the parts replacement .  .  .  .  .  .  .  .  203
Chapter 4.  Problem  
determination .  .  .  .  .  .  .  .  .  .  .  .  . 205
Event logs .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  205
Light path diagnostics .  .  .  .  .  .  .  .  .  .  .  .  206
General problem determination procedures .  .  .  .  206
Resolving suspected power problems .  .  .  .  207
Resolving suspected Ethernet controller  
problems .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  207
Troubleshooting by symptom .  .  .  .  .  .  .  .  .  208
Power on and power off problems .  .  .  .  .  .  208
Memory problems .  .  .  .  .  .  .  .  .  .  .  .  210
Hard disk drive problems .  .  .  .  .  .  .  .  .  211
Monitor and video problems .  .  .  .  .  .  .  .  213
Keyboard, mouse, or USB-device  
problems .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  214
Optional-device problems .  .  .  .  .  .  .  .  .  215
Serial-device problems .  .  .  .  .  .  .  .  .  .  216
Intermittent problems.  .  .  .  .  .  .  .  .  .  .  217
Power problems .  .  .  .  .  .  .  .  .  .  .  .  .  218
Network problems .  .  .  .  .  .  .  .  .  .  .  .  218
Observable problems.  .  .  .  .  .  .  .  .  .  .  218
Software problems.  .  .  .  .  .  .  .  .  .  .  .  221
Appendix A.  Hardware 
disassembling for recycle .  .  .  .  .  .  . 223
Disassembling the system board for recycle.  .  .  .  223
Appendix B.  Getting help and 
technical assistance .  .  .  .  .  .  .  .  .  . 225
Before you call .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  225
Collecting service data .  .  .  .  .  .  .  .  .  .  .  .  226
Contacting Support .  .  .  .  .  .  .  .  .  .  .  .  .  226
Appendix C.  Notices.  .  .  .  .  .  .  .  .  . 227
Trademarks .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  228
Important notes .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  228
Telecommunication regulatory statement.  .  .  .  .  228
Electronic emission notices .  .  .  .  .  .  .  .  .  .  228
Taiwan BSMI RoHS declaration .  .  .  .  .  .  .  229
Taiwan import and export contact information .  .  .  229
ii ThinkSystem SR635 Maintenance Manual