IBM 560 - Manual (Page 53)

The parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in
compatibility mode.
Error Codes
POST returns a three or more character code message to indicate
the type of test that failed. Figure 2-33 lists the failure indicated with
the associated error code.
Figure 2-33 (Part 1 of 2). Error Codes
Error
Code Description
101 Interrupt failure.
102 Timer failure.
103 Timer interrupt failure.
104 Protected mode failure.
105 Last 8042 command not accepted.
107 NMI test failure.
108 Timer bus test failure.
109 Low meg-chip select test.
110 Planar parity.
111 I/O parity.
118 Planar parity error logged.
158 A supervisor password is set, but no hard disk password is set.
159 The hard disk password is not identical to the supervisor password.
161 Dead battery.
163 Date and time are not set; clock not updated.
173 CMOS CRC error.
174 Configuration error.
175 Bad EEPROM CRC 1.
177 Bad supervisor password checksum.
178 EEPROM is not functional.
179 NVRAM error log full.
183 Supervisor password is needed.
184 Bad power-on password checksum.
185 Corrupted startup boot sequence.
186 Inconsistency between EEPROM and security lock latch 2.
188 Bad EEPROM CRC 2.
189 Too many passwords attempted.
190 Critically low battery condition detected.
191XX PM initialization error.
195 Configuration mismatch error found during hibernation wake-up.
196 Critical error found during hibernation wake-up.
201 Memory data error.
202 Memory line error 00 through 15.
203 Memory line error 16 through 23.
215 Memory test failure on on-board memory.
221 ROM to RAM remap error.
301 Keyboard error.
ThinkPad 560/560E System Board 2-31