IBM 4820, System Reference Manual

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Condition description Resolution
Blocks of missing data on display
v
Check that the LCD cable is securely
connected.
v Check that the controller cable of the host
system is securely connected.
v Run the 4820 Video Quality Test Pattern.
v If necessary, replace the cables.
v
Replace the 4820 display, if necessary.
Magnetic stripe reader (MSR) malfunctioning
v
Check that the cable is securely connected.
v
Make sure the MSR is securely attached to
the display.
v Run the MSR test using the service diskette.
v
Replace the MSR.
v For models 48D, 48T, refer to the IBM POS
Device Diagnostics, which came with the
POSS for Windows installation.
Keypad malfunctioning
v Check that the cable is securely connected.
v
Make sure the keypad is securely attached to
the display.
v Run the keypad test using the service
diskette.
v
Replace the keypad.
v For models 48D, 48T, refer to the IBM POS
Device Diagnostics, which came with the
POSS for Windows installation.
Pointing device malfunctioning
v Make sure the pointing device is securely
attached to the display.
v
Run the pointing device test using the service
diskette.
v
Replace the pointing device.
v
For models 48D, 48T, refer to the IBM POS
Device Diagnostics, which came with the
POSS for Windows installation.
Troubleshooting common problems
B-4
4820 SurePoint Solution System Reference