Structure and Assembly/Disassembly of the Machine
4.7Other Faults
Table 5-2 Other faults list
No Fault Cause Remark
1 The   fan   doesn’t 
work.
+12V power is abnormal◆
The cable’s fault◆
The fan’s fault◆
Supply the  +12V power 
directly   by   the   power 
board,   check   the   +12V 
voltage   in   the   power 
board.
2 USB fault The cable’s fault◆
The main board is abnormal◆
The   software   doesn’t◆  
support U disk or the printer.
Replace  USB interface◆  
cable
Check the main board◆
Use   U   disk   or   the◆  
printer   of   specified 
model 
3 Video output fault Video cable’s fault  ◆ ( inside 
the main board)
The main board is abnormal◆
Check   the◆  
corresponding   video 
cable
Check the main board◆
4 Network fault The main board is abnormal◆ First   verify   that   the◆  
external   network   is 
connected correctly.
DP-3300/DP-3200 Service Manual(V1.1) 5-5