Samsung ML-1645

Service Manual
Alignment & Troubleshooting
4-12
Samsung Electronics
No. Function Enter Up / Do w n Stop Remark
00
Motor
Motor Run Motor S top
01
MHV
MhvOn Mhv Off -1300V
-1000
-350V
020mV
V
02
THV(-)
Thv Negative O n Thv Negative O ff
03
THV(+)
Thv O n Thv Off +1300V
04
DEV
Dev On
Supply DEV
-350V
Dev Off
0 :-550V 0:
05
LSU
LSU R un
On OffReady
LSU Stop
06
PickUp
Pickup O n Pickup O ff
07
PEmpty
Paper Em pty
08
Sensor
ExitFeed
09
Cover
C over O pen
10
Fuser
Fuser On Fuser O ff
11
HotBurn
HotBurn On
12
Clean Print
Clean Printing
13
Thv
Reference
low adequate high
14
PTL
PTL On P PTL ł ‰TL O ff
15
FAN
Fan O n Fan Off
16
Manual
PickUp
M anualPickup O n ManualPickup O ff
17
Manual
Sensor
M anualSensor
4.1.5.4 Self Test Button
If the Self-Test button pressed, vertical lines are printed.
Turn the power on while pressing this button, '89' shows in the DCU and the printer is warming up. After warming-
up the printer is in READY Mode, and '88' shows in the DCU. In this mode, without any detection, the printer begins
printing(trial printing and data from the PC). It is convenient to use this mode when the engine malfunction is
detected in the control board.