Lenovo NetVista A20 Hardware Maintenance Manual for NetVista 6266, 6270, 6276, - Page 57

Error Symptoms, Action/FRU, Parallel, Joystick, Diagnostic Program, Keyboard, Power Supply

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Table 2-3 Error Symptoms List Error Symptoms Action/FRU NOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a check procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/FRU listed in right column is the most likely cause. Display problem not listed above "Monitor" on page 68. (including blank or illegible monitor). Load default settings (if screen is readable). System board Parallel NOTE: Execute "Load BIOS Default Settings" in BIOS Setup to confirm ports' presence before diagnosing any parallel/serial ports problems. Serial or parallel port loop-back Make sure that the LPT# or COM# you test is the same as is set in test failed. BIOS Setup. Loop-back. System board. Printing failed. Make sure that the printer driver is properly installed. Refer to the service manual for the printer. Printer. Printer cable. System board. Printer problems. Refer to the service manual for the printer. Joystick Game port does not respond or Connect a joystick to the game port, then execute "Interactive does not work. Test/Joystick test" in PC-Doctor diagnostics program. System board. Diagnostic Program Diagnostics programs cannot be Reboot the system from the diagnostics diskette. executed. Load default settings. Diagnostics diskette. Memory module. System board. Missing diagnostics files(s). Diagnostics diskette. Keyboard Some or all keys on keyboard do "Keyboard" on page 64. not work. Power Supply Pressing power switch cannot See "Power Management Setup" on page 39. turn off system. (Only unplug Power switch cable assembly power cord from electrical outlet can turn off system.) "Power Supply" on page 66. System board Pressing power switch cannot turn on system. Check the voltage selector on the power supply if it is off. Power switch cable assembly. Executing software shutdown from Windows98 Start menu cannot turn off system. (Only pressing power switch can force system to turn off). Load default settings. Reload software from Recovery CD. No system power or power supply fan is not running. "Power Supply" on page 66. System board. 57

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57
Table 2-3 Error Symptoms List
Error Symptoms
Action/FRU
NOTE:
To diagnose a problem, first find the error symptom in the left column. If directed to a check
procedure, replace the FRU indicated in the check procedure. If no check procedure is indicated, the first
Action/FRU listed in right column is the most likely cause.
Display problem not listed above
(including blank or illegible
monitor).
"Monitor" on page 68.
Load default settings (if screen is readable).
System board
Parallel
NOTE:
Execute “Load BIOS Default Settings” in BIOS Setup to confirm ports’ presence before
diagnosing any parallel/serial ports problems.
Serial or parallel port loop-back
test failed.
Make sure that the LPT# or COM# you test is the same as is set in
BIOS Setup.
Loop-back.
System board.
Printing failed.
Make sure that the printer driver is properly installed.
Refer to the service manual for the printer.
Printer.
Printer cable.
System board.
Printer problems.
Refer to the service manual for the printer.
Joystick
Game port does not respond or
does not work.
Connect a joystick to the game port, then execute “Interactive
Test/Joystick test” in PC-Doctor diagnostics program.
System board.
Diagnostic Program
Diagnostics programs cannot be
executed.
Reboot the system from the diagnostics diskette.
Load default settings.
Diagnostics diskette.
Memory module.
System board.
Missing diagnostics files(s).
Diagnostics diskette.
Keyboard
Some or all keys on keyboard do
not work.
“Keyboard“ on page 64.
Power Supply
Pressing power switch cannot
turn off system. (Only unplug
power cord from electrical outlet
can turn off system.)
See ”Power Management Setup” on page 39.
Power switch cable assembly
"Power Supply" on page 66.
System board
Pressing power switch cannot
turn on system.
Check the voltage selector on the power supply if it is off.
Power switch cable assembly.
Executing software shutdown
from Windows98 Start menu
cannot turn off system. (Only
pressing power switch can
force system to turn off).
Load default settings.
Reload software from Recovery CD.
No system power or power
supply fan is not running.
"Power Supply" on page 66.
System board.