4-11
Samsung Electronics
Troubleshooting
After printing
completed, any error
related fuser?
Both ends
of thermostat
open?
Replace thermostat
and re-test.
Replace the contol
component on engine
board.
Check any contact
problem in thermistor
and repair.
The machine
placed under the
severe low tempera-
ture for a long
time?
Place the machine
at normal
temperature and
re-test.
While printing,
the voltage of pin 46
of U5 (CPU) on engine
board is 2.7V
- 3.0V?
Thermistor's
contact is OK?
Open the top
cover. When black
printing, is the fuser NIP
width is 3.0-
3.5mm?
The paper used is too
thick or contains too
much cotton in it.
-> Re-test with the
recommended paper.
Check if the hardness of
P/R, and spring force is OK?
(hardness: 24 degree,
spring's force: 3 Kg)
Re-assemble
thermistor.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
4-2-12 Poor Fusing Grade
Summary of Contents for ML-5000A
Page 40: ...5 2 Samsung Electronics Exploded Views and Parts List 5 1 Main Exploded View 75 76 79 78 77 ...
Page 44: ...5 6 Samsung Electronics Exploded Views and Parts List 5 5 Top Cover Exploded View 14 15 ...
Page 54: ...5 16 Samsung Electronics Exploded Views and Parts List 62 5 15 Motor Exploded View ...
Page 58: ...5 20 Samsung Electronics Exploded Views and Parts List Memo ...
Page 72: ...Electrical Parts List 6 14 Samsung Electronics Memo ...
Page 74: ...Controller ML 5000A 1 7 7 2 Samsung Electronics Schematic Diagrams ...
Page 75: ...Controller ML 5000A 2 7 7 3 Samsung Electronics Schematic Diagrams ...
Page 76: ...Controller ML 5000A 3 7 7 4 Samsung Electronics Schematic Diagrams ...
Page 77: ...Controller ML 5000A 4 7 7 5 Samsung Electronics Schematic Diagrams ...
Page 78: ...Controller ML 5000A 5 7 7 6 Samsung Electronics Schematic Diagrams ...
Page 79: ...Controller ML 5000A 6 7 7 7 Samsung Electronics Schematic Diagrams ...
Page 80: ...Controller ML 5000A 7 7 7 8 Samsung Electronics Schematic Diagrams ...
Page 83: ...OPE Panel ML 5000A G 7 11 Samsung Electronics Schematic Diagrams ...
Page 84: ...Engine ML 5000A G 1 3 7 12 Samsung Electronics Schematic Diagrams ...
Page 85: ...Engine ML 5000A G 2 3 7 13 Samsung Electronics Schematic Diagrams ...
Page 86: ...Engine ML 5000A G 3 3 7 14 Samsung Electronics Schematic Diagrams ...
Page 87: ...Joint Board ML 5000A G 7 15 Samsung Electronics Schematic Diagrams ...
Page 91: ...7 7 Sensor ML 5000A G 7 19 Samsung Electronics Schematic Diagrams ...
Page 92: ...7 8 Switch ML 5000A G 7 20 Samsung Electronics Schematic Diagrams ...
Page 93: ...7 9 PTL ML 5000A G 7 21 Samsung Electronics Schematic Diagrams ...
