Panasonic KX FLB758RU User Manual

6.5.5.4. Others
No.SymptomCauseCountermeasure
1Cannot print legal sizeNot selected the legal modeSelect the legal mode in the user programming mode
2´CHECK DRUM´on the
LCDNo connection between the drum unit and the
whole unitReplace the drum unit or the terminal of whole unit
Failed the drum sensorGo to DRUM SENSOR....” CHECK DRUM”(P.189)
3´CHANGE DRUM ´on the
LCDThe toner sensor cannot detect the drum unitReplace the toner sensor lever or check the analog board
Dust between the drum unit and the toner...

6.5.6. CALL SERVICE TROUBLESHOOTING GUIDE
Call Servic e related error is most frequent.Call Service 1 ----- Polygo n doesn ’t rotate......... Refer to LSU (Laser Scanning Unit) SECTION (P.183).
 
     · 
  
  First, listen to the sound. If rotation sound isn ´t heard, check 24V line, POLON signal and POLCLK signal. If even a little of
sound is heard, check XREADY signal.
Call Service 2 ----- Laser isn ´t output.......... Refer to LSU (Laser Scanning Unit) SECTION (P.183)
 
  
  · 
  
  This can be judged...

6.5.6.1. CALL SERVICE 1
CALL SERVICE 1 means that the polygon motor inside the LSU does not rotate.
The rotation of the polygon motor is detected by IC610-90pin (XREADY).
93
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.6.2. CALL SERVICE 2
CALL SERVICE 2 means that the synchro nous signal out of the LSU cannot be detected.
The synchro nous signal out of the LSU is detected by IC 610-89pin. (XHSYNC)
Note:As for the Pulse waveform of the above flow chart, see the timing chart.
94
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.6.3. CALL SERVICE 3
CALL SERVICE 3 means that the temperature of the fuser does not rise up to or exceed a constant temperature.
The temperature is monitored with the thermistor inside the fuser and detected with the voltage input into IC 604-Y6pin.
95
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.6.4. CALL SERVICE 4
CALL SERVICE 4 means that the FAN does not run or the running of the FAN cannot be detected normally.
The running of the FAN is detected by IC 610-93pin. CALL SERVICE 4 is displayed when it detects NG five times continuously.
After reparing, copy five times.If“CALL SERVI CE 4 “is displayed, check again.
96
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.7. PRINT
6.5.7.1. GHOST IMAGE
CROSS REFER ENCE:HIGH VOLTAGE SECTION (P.150)
POWE R SUPPL Y BOARD SECTION (P.155)
97
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.7.2. DARK OR WHITE VERTICAL LINE
Note:W hen wiping the lower glass, reflecting mirror and LSU lens, use a dry and soft cloth.
CROSS REFER ENCE: LSU SECTION (P.147)
98
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.7.3. DARK OR WHITE HORIZONTAL LINE
CROSS REFER ENCE:HIGH VOLTAGE SECTION (P.150)
99
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals 

6.5.7.4. DIRTY OR HALF DARKNE SS BACKGROUND
CROSS REFER ENCE:HIGH VOLTAGE SECTION (P.150)
100
KX-FLB75 8RU
Downloaded From ManualsPrinter.com Manuals