IBM PCjr Hardware Maintenance And Service page 246

Error
Description
Ribbon
Jammed
Diagnostic Action
1. Remove ribbon cartridge. Try a print
operation to verify that print head carriage
functions normally. If carriage fails, see
page 3-1400-10, "No Printing."
2. Check ribbon cartridge for binding by
manually advancing ribbon and replace if
binding.
3. Visually check for worn or broken ribbon
drive gears and replace carriage drive
assembly if damaged. See Section 4,
"Removal/Replacement and Adjustments."
4. Check for bent ribbon shield and replace if
necessary. See Section 4, "Removal/
Replacement and Adjustments."
5. Check print head for broken or binding
wires. Replace print head if wires are
broken or bound. See Section 4,
"Removal/Replacement and Adjustments."
3-1400-16 Graphics Printer