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Toshiba B-852-R Benutzerhandbuch

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4. TROUBLESHOOTING 
EO18-33018 
4. TROUBLESHOOTING
 
 
4- 1 
4. TROUBLESHOOTING 
Problems Cause 
Solution 
Power does not 
turn ON. 
1.  Input voltage to the printer is not 
within the rated voltage. 
 
2.  Output voltage from the printer is not 
within the rated voltage. 
 
3.
 
No voltage to the MAIN PC board.  
 
 
 
 
 
 
4.
 
Failure of MAIN PC board.  
Replace the power cable or power 
inlet.  
 
Replace the PS unit. 
 
 
Check if the power harness is 
connected to CN8 on the MAIN PC 
board correctly. 
Replace the power harness or Power 
Supply Unit. 
 
Replace the MAIN PC board.  
LED or LCD does 
not light. 
1.
 
Failure of the panel PC board or 
operation panel 
2.
 
Failure of the operation panel 
harness 
3.
 
Failure of the MAIN PC board 
Replace the panel PC board or 
operation panel. 
Replace the operation panel harness.
 
Replace the MAIN PC board.  
Poor printing 
1.
 
Poor media quality. 
 
2.  Dirty print head 
3.
 
The print head block is not set 
completely.  
Use the media approved by 
TOSHIBA TEC. 
Clean the print head. 
Close the print head block 
completely.  
Printer does not 
print.  
1.  Print head failure 
2.  Connection of the print head 
connector is incomplete, a bad 
contact, or broken elements. 
3.  Failure in rewinding/feeding of the 
ribbon. 
4.  Failure of the MAIN PC board. 
5.  Failure of the software 
6.
 
Failure of the printer cable.  
Replace the print head. 
Connect the harness completely, or 
replace the harness. 
 
Replace the ribbon rewind motor,  
ribbon feed motor or MAIN PC board.
Replace the MAIN PC board. 
Check the program. 
Replace the printer cable.  
Dot missing 
1.  Broken print head element 
2.  Broken print head cable wires 
3.
 
Failure of the MAIN PC board 
Replace the print head. 
Replace the print head harness. 
Replace the MAIN PC board. 
Blurred print 
1.  Poor media quality. 
 
2.
 
Dust is on the media. 
Use only TOSHIBA TEC-approved 
media. 
Clean the print head and remove any 
dust from the media. 
Ribbon wrinkle 
1.
 
Poor ribbon quality. 
 
 
2.
 
Ribbon is not rewound or fed 
smoothly. 
Use only TOSHIBA TEC-approved 
ribbon.  
 
Replace the ribbon rewind motor or 
ribbon feed motor.