| Symptom / Error | FRU / Action | 
| 0001 60XX System Board ID not recognized.
 Possible system board failure
 | 1. Run Advanced Diagnostics | 
| 0001 61XX CAUTION:
 The lithium battery (IBM part number 33F8354) in your computer presents a fire, explosion or severe burn risk.
 Use of another battery could result in ignition or explosion of the battery.
 For some tips about batteries look here !
 | 1. Battery 2. Processor Board (90/95)
 3. System Board
 4. Bus Adapter
 | 
| 0001 62XX Be sure all devices are powered-on.
 Check Enable/Disable settings.
 Configuration changed ? If so, run Automatic Configuration.
 | 1. Any Device 2. Battery
 | 
| 0001 63XX Date and time error
 | 1. Set Date and Time | 
                                                                  
| 0001 6000 / 0001 6400 0001 6500 / 0001 6700
 0001 6900
 If setting configuration, date and time
 does not solve the problem,
 see Devices List
 | 1. Set Configuration, Features 2. System Board
 | 
| 0001 66XX Adapter-busy. Reseat all adapters
 | 1. Run Advanced Diagnostics | 
| 0001 67XX Clock is not working correctly
 | 1. Set Features. Set date and time | 
| 0001 68XX Real time clock error.
 This is not always a hardware failure.
 Also see:
 'Real-Time Clock Problems'.
 | 1. Run Advanced Diagnostics | 
| 0001 69XX Processor configuration error.
 Run AutomaticConfiguration, then verify that the processor  configuration information is correct before replacing FRUs
 | 1. Processor Board 2. System Board
 | 
| 0001 70XX ASCII console setup conflict error.
 The serial port is disabled
 | 1. From Set Configuration, select Change Configuration, and enable the port | 
| 0001 71XX | 1. Battery 2. Processor Board (90/95)
 3. System Board
 4. Bus Adapter
 | 
| 0001 72XX | 1. System Board | 
| 0001 73XX Possibly a weak battery
 | 1. Set Configuration / Features | 
| 0001 74XX If the configuration has been changed, run Automatic Configuration. Otherwise run Advanced Diagnostics.
 Check SCSI Device Default Settings
 | 1. Any Device 2. System Board
 3. Bus Adapter
 | 
| 0001 75XX Security error. The system board EEPROM failed
 | 1. System Board | 
| 0001 76XX Security error.
 The covers were removed without using the key. The tamper evident  switch was tripped
 | 1. Start the system from the Reference Diskette (or server image) and reconfigure the system 2. Security Switch Assembly
 3. System Board
 | 
| 0001 77XX / 0001 78XX Security error. Passwords corrupted.
 Reset Passwords
 | 1. System Board | 
| 0001 79XX System error log might be full
 | 1. Go into the log and note the errors. Clear the log, then run Advanced Diagnostics | 
| 0001 81XX The computer requires a network adapter for remote IPL or a hard disk drive ID of LUN 0 for IML, neither of these were detected
 | 1. Run Automatic Configuration 2. Network Adapter
 3. Hard Disk Drive
 4. System Board
 | 
| 0001 82XX Privileged access password (PAP) data is corrupted. To restore it, move jumper JMP2 to position '0' write enabled.
 | Information only | 
| 0001 83XX Wrong password entered
 | 1. Enter the Privileged access password (PAP) instead of the power-on password | 
| 0001 84XX Power-on password corrupted
 | 1. User must reset the password | 
| 0001 85XX Selectable startup sequence corrupted
 | 1. Run Select Startup Sequence utility. Reset user's chosen startup sequence
 | 
| 0001 86XX Security error, Hardware failed
 | 1. Run Advanced Diagnostics 2. System Board
 | 
| 0001 87XX Vital Product Data (VPD) error. System  serial number information corrupted
 | 1. Select Set system identification (from the Reference Diskette, System Partition or server image) and type the system serial number. If problem remains, suspect the system board | 
| 0001 88XX Vital Product Data (VPD) error
 | 1. Run Automatic Configuration | 
| 0001 89XX The wrong password was entered 3 times. Clear the system error log and restart the system
 | Information only | 
| 0001 91XX 82385 cache test failed
 | 1. Run Advanced Diagnostics | 
| 0001 94XX | 1. System Board Memory 2. Memory Riser Card (90)
 3. Memory Module Kit
 | 
| 0001 99XX User indicated configuration is invalid
 | 1. Run the Flash Update Utility (PS/2 9553-xBx Only)
 2. System Board
 | 
| 0001 XXXX not listed above
 | 1. System Board / Processor Board (90/95) 2. 486DX33 Upgrade (70/80)
 3. Any Adapter
 4. Bus Adapter
 |