Rev. A Troubleshooting 4-23
TM-U950/U950P Technical Manual
Major Part Replacements
Fuse replacement
Follow the steps below to replace a blown fuse:
1. Turn the printer off.
2. Disconnect the external power supply unit.
3. Perform Main Assembly 6 and 7 in Chapter 5 in reverse.
4. Replace the blown fuse (125 V, 3.15 AT).
5. Perform steps (1) through (3) in reverse.
If the printer still does not operate properly, or if the fuse blows again, use the flowchart in
Chapter 4 to check for other problems.
Print Head Unit Replacement
Follow the steps below to replace the print head unit:
1. Turn the printer off.
2. Disconnect the external power supply unit.
3. Disassemble the printer following the procedure described in Replacing the Print Head Unit
in Chapter 5.
4. Replace the print head unit.
5. Perform gap adjustment referring to page 5-58.
6. Perform steps (1) through (3) in reverse.
Cutter Blade Replacement
Follow the steps below to replace the cutter blade:
1. Turn the printer off.
2. Disconnect the external power supply unit.
3. Disassemble the printer following the procedure described in Replacing the Cutter Blade in
Chapter 5.
4. Replace the cutter blade. (Make sure the cutter blade is only one leaf.)
5. Perform steps (1) through (3) in reverse.
CONFIDENTIAL
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