IBM 6643 - Manual (Page 62)

Diagnostic Error Code FRU/Action
217-28X-XXX
217-29X-XXX
Hard Disk Drive (SCSI) error
1. Hard Disk Drive Cable
2. Check power supply voltages
3. Hard Disk drive (SCSI)
4. SCSI adapter card
5. System board
220-000-XXX
Hi-Capacity Cartridge Drive Test Passed
1. No action
220-XXX-XXX
Hi-Capacity Cartridge Drive error
1. Remove the Hi-Capacity Cartridge
Drive and re-test the system
301-XXX-XXX
Keyboard error
1. Keyboard
2. Check and test mouse
3. System board
301-000-XXX
Keyboard Test Passed
1. No action
302-000-XXX
Mouse Test Passed
1. No action
302-XXX-XXX
Mouse error
1. Mouse
2. Check and test Keyboard
3. System board
303-000-XXX
Joystick Test Passed
1. No action
303-XXX-XXX
Joystick error
1. Remove the Joystick and re-test the
system
305-000-XXX
Monitor DDC Test Passed
1. No action
305-250-XXX
Monitor DDC self test failure
1. Run Setup to enable DDC
2. Cable
3. Monitor
4. Video card
5. System board
415-000-XXX
Modem
Test Passed
1. No action
415-XXX-XXX
Modem error
1. Remove the Modem and re-test the
system
POST error codes
Each time you power-on the system, it performs a series of tests that check the
operation of the system and some options. This series of tests is called the
Power-On Self-Test, or POST. POST does the following operations:
v Checks some basic system-board operations
v Checks the memory operation
v Starts the video operation
v Verifies that the diskette drive is working
v Verifies that the hard disk drive is working
54 Hardware Maintenance Manual