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4-5
TROUBLESHOOTING
Service Manual
4.1.4 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.
No. Function Enter Up/ Dow n Stop Remark
00
Motor
Motor Run Motor S top
01
MHV
Mhv On Mhv Off -1550V
02
THV(-)
Thv Negative On Thv Negative Off
03
THV(+)
Thv On Thv Off +1300V
04
DEV
Dev On
Supply DEV
De v Of f
0:-630V 0:-430V
05
LSU
LSU Run
On Off Ready
LSU Stop
06
Pic kUp
Pickup On Pickup Off
07
PEmpty
Paper Empty
08
Sensor
Ex it Feed
09
Cover
Cover Open
10
Fuser
Fuser On Fuser Off
11
HotBurn
Ho tB ur n O n
12
Clean Print
Clean Pr inting
13
Thv
Reference
low adequate high
14
PTL
PTL On PTL Off
15
FAN
Fan On Fan Off
16
Manual
Pic kUp
Manual Pickup On Manual Pickup Off
17
Manual
Sensor
Manual Sensor