Samsung Office Master SCX-5312F, Service Manual

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Troubleshooting
4-34
Samsung Electronics
4-6-4 Malfunction
Error Status Check Solution
No power 1. Check power is supplying
2. Check fuse F1 open
1. If supplying power differs from machine’s power rat-
ing, replace the machine.
2. Replace it.
Fuser Error 1. Thermostat open
2. AC wire open
3. Thermistor wire open
4. Main PBA
1. Detach AC connector and measure the resistane
between pin 1 and 2. If it is megohm, thermostat is
open, Replace it.
2. Check bad connector contact or wire is cut.
3. Check thermistor wire and its connection.
4. Replace Main PBA
Cover open 1. When close Side cover, check the lever is
pressed
2. Micro switch’s contact
3. CPU and related circuit
1. Open Side cover and press the lever with pen. If
Controller detects cover close, there is some mechan-
ical trouble in Side cover and lever’s assembly. If not
so there is electrical problem.
Jam 0 Check where Jam 0 happens
1. Paper is not picked up
2. Paper is located in feed sensor
3. Happened when inserting specific papers such
as envelope into the MPF (Multipurpose Paper
Feeder)?
4. Happened when inserting specific papers such
as envelope into the Manual Feeder?
5. Is the Stacker Extender is folded out?
6. Does not the Guide Adjust distort the papers
1. Check whether solenoid is working or not by using
Engine test mode
2. Check feed sensor malfunction.
3. Re-try inserting a fewer papers.
•fan the papers and align
•take out the loaded papers and insert
them reverse direction
4. Take out the loaded papers and insert them reverse
direction
•inserted papers as recommended for
Manual Feeding?
•When loading, tap the papers until paper detect
sensor senses loading
5. When using long papers, use the Stacker Extender
6. Adjust Guide to fit the paper width
Jam 1 Paper is stopped in just after of fuser unit. 1. It is mostly resulted from double feeding. Check
paper is well stocked in feeder.
2. Check feed actuator position and actuator’s operat-
ing. There may be stiff movind or double reflection. If
not so, check the operation of feed sensor by Engine
test mode.
3. Check exit lever operation. Remore jam and check
actuator moving by hand. If actuator is too stiff, paper
is wrapped around the heat roller. Remove obstacles
or replace.
Jam 2 Check where Jam 2 happens
1. Paper is curled and cannot exit.
2. Paper is curled in the exit cover?.
1. Remove paper using pinset or some tool and watch if
separate claws have any troble. Clean around fuser.
2. Check locking works wells. Watch whether the ribs of
exit cover hace any burr or resisitive edge. If they do,
remove obstacles or replace.