Panasonic KX-FL403UA Service Manual ▷ View online
6.5.3. INITIALIZATION
There are two types of initialization, one is the short initialization (about 3 seconds) and the other is the long initialization (about
10 seconds). The short initialization makes the unit enter the standby mode. The long initialization makes the unit enter the
standby mode after cleaning or detecting the rest of toner.
10 seconds). The short initialization makes the unit enter the standby mode. The long initialization makes the unit enter the
standby mode after cleaning or detecting the rest of toner.
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6.5.4. SIMPLE CHECK LIST
Note:
Check according to the service code referring to TEST FUNCTIONS (P.68)
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6.5.5. SIMPLIFIED TROUBLESHOOTING GUIDE
6.5.5.1. PRINTING
No.
Symptom
Cause
Countermeasure
1
GHOST IMAGE (P.93)
Failed drum unit
Replace drum unit
Failed transfer unit
Check the transfer roller and spring
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
Failed fuser unit
Check the heat roller and the pressurized roller and the spring
and the heat lamp and the thermistor
and the heat lamp and the thermistor
Failed the power supply board
Go to POWER SUPPLY BOARD SECTION (P.151)
Too thick or too thin recording paper
Use the recording paper from 16lb to 24lb
2
DARK
OR
WHITE
VERTICAL LINE (P.94)
Dirty the lower glass or the reflecting mirror
Clean the lower glass and the reflecting mirror
Dust on the path of the laser beam
Clean the path of the laser beam
Dust on the developing roller
Replace drum unit
Failed the heat roller or the pressuizedr roller
Check the heat roller and the pressurized roller
Failed LSU
Go to LSU SECTION (P.142)
3
DARK
OR
WHITE
HORIZONTAL LINE (P.95)
Failed drum unit
Replace drum unit
Failed the gear
Check the gear
Failed the engine motor
Go to ENGINE MOTOR (P.140)
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
Scratch on the OPC drum
Replace drum unit
Static electricity on the documents (when
copying)
copying)
Check the connection between the parts around CIS and earth
4
DIRTY
OR
HALF
DARKNESS
BACKGROUND (P.96)
BACKGROUND (P.96)
Failed drum unit
Replace drum unit
Life of drum unit is over
Replace drum unit
Dirty the pickup roller and the regist roller and
the feed roller and the eject roller and the heat
roller and the pressure roller
the feed roller and the eject roller and the heat
roller and the pressure roller
Clean the pickup roller and the regist roller and the feed roller
and the eject roller and the heat roller and the pressure roller
and the eject roller and the heat roller and the pressure roller
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
Dirty the recording paper path
Clean the recording paper path
5
BLACK PRINT (P.97)
Failed drum unit
Replace drum unit
Failed LSU
Go to LSU SECTION (P.142)
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
Failed the digital board
Check the digital board
Failed CIS (when copying)
Go to CIS (Contact Image Sensor) SECTION (P.143)
6
LIGHT PRINT (P.98)
Short toner
Supply toner
Failed drum unit
Replace drum unit
Life of drum unit is over
Replace drum unit
Dirty the lower glass or the reflecting mirror
Clean the lower glass and the reflecting mirror
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
7
BLACK
DENSITY
IS
LIGHT OR UNEVEN(P.99)
Short toner
Supply toner
Failed drum unit
Replace drum unit
Life of drum unit is over
Replace drum unit
Dirty the lower glass or the reflecting mirror
Clean the lower glass and the reflecting mirror
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
8
BLANK PRINT (P.100)
Failed drum unit
Replace drum unit
Failed LSU
Go to LSU SECTION (P.142)
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
Failed the digital board
Check the digital board
Failed CIS (when copying)
Go to CIS (Contact Image Sensor) SECTION (P.143)
9
BLACK OR WHITE POINT
(P.100)
(P.100)
Failed the developing roller (31.4mm pitch)
Replace drum unit
Failed the OPC drum (75.4mm pitch)
Replace drum unit
Failed the heat roller (62.8mm pitch)
Check the heat roller
Failed the charge blush (21mm pitch)
Replace drum unit
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
Too thick or too thin recording paper
Use the recording paper from 16lb to 24lb
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KX-FL403UA
6.5.5.2. RECORDING PAPER FEED
No.
Symptom
Cause
Countermeasure
1
MULTIPLE FEED (P.101)
Dirty or failed the pickup roller
Clean or replace the pickup roller
Dirty or failed the pickup rubber
Clean or replace the separation rubber
2
THE RECORDING PAPER
IS WAVED OR WRINKLED
(P.101)
IS WAVED OR WRINKLED
(P.101)
Dirty the pressure roller or the heat roller
Clean the pressure roller and the heat roller
Failed the spring of pressure roller
Replace the spring of pressure roller
Too thin recording paper
Use the recording paper from 16lb to 24lb
3
SKEW (P.102)
Dirty or failed the pickup roller
Clean or replace the pickup roller
Dirty or failed the pickup rubber
Clean or replace the separation rubber
Dirty or failed the paper feed roller
Clean or replace the regist roller
Dust on the recording paper path
Clean the recording paper path
Failed LSU
Replace LSU
Over the max capacity of the recording paper Set up to MAX 150 sheets
Too thick or too thin recording paper
Too thick or too thin recording paper
Use the recording paper from 16lb to 24lb
4
THE RECORDING PAPER
DOES NOT FEED (P.103)
DOES NOT FEED (P.103)
Dirty or failed the pickup roller
Clean or replace the pickup roller
Dirty or failed the pickup rubber
Clean or replace the separation rubber
Failed the gear
Check the gear
Failed the engine motor
Go to ENGINE MOTOR (P.140)
Failed the paper feed sensor lever
Check the regist sensor (paper top sensor) lever
Failed the paper feed sensor
-----
5
THE RECORDING PAPER
JAM(P.104)”PAPER
JAMMED” ON THE LCD
JAM(P.104)”PAPER
JAMMED” ON THE LCD
Dirty or failed the pressure roller
Clean or replace the pressure roller
Dirty or failed the heat roller
Clean or replace the heat roller
Dust on the recording paper path
Clean the recording paper path
Failed the paper feed roller
Replace the regist roller
Failed the gear
Check the gear
Failed the engine motor
Go to ENGINE MOTOR (P.140)
Failed the paper feed sensor lever
Check the regist sensor (paper top sensor) lever
Failed the paper feed sensor
-----
Failed the exit sensor lever
Check the exit sensor lever
Failed the exit sensor
Go to PAPER EXIT SENSOR..... “PAPER JAMMED” (P.185)
Too thick or too thin recording paper
Use the recording paper from 16lb to 24lb
Not set the toner bottle
Set toner bottle
6
BACK
SIDE
OF
THE
RECORDING
PAPER
IS
DIRTY(P.106)
Dirty the recording paper path
Clean the recording paper path
Dirty the pressure roller
Clean the pressure roller
Dirty the regist roller
Clean the regist roller
Failed the high-voltage terminal
Check the high-voltage terminal
Failed the high voltage power supply board
Go to HIGH VOLTAGE SECTION (P.146)
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