Christie DWU851 Service Manual page 15

DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
Neither lamp lights.
Does
the Status Monitor
displaying any error
message?
YES
the error message
displayed in the Status
Monitor.
The other of OTHER
COVER: COVER ERROR is detected.
LAMP: LAMP ERROR is detected.
TEMP: TEMPERATURE ERROR is detected.
FAN**: FAN ERROR is detected.
COVER ERROR is detected.
the LAMP UNITs and
DOORs are attached
correctly.
OK
Measure
voltage between pins (5)
and (6) of E802.
1V or more
Measure
the resistance*
between pins (5) and (6)
of EP01 in the LAMP DOOR
RELAY PCB while the
switches are
closed.
Open
Replace the LAMP DOOR RELAY PCB.
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
Replace MAIN PCB.
NO
or
Replace STATUS MONTOR.
OTHER
Replace ENGINE ass'y.
*: Be sure to unplug the power cord before measuring resistance.
NG
Re-install LAMP UNITs and DOORs.
Measure
0V
voltage between pins
(1) and (2) of E304
and E305.
Either is 1V or more.
E304: LAMP1 SW. PCB, E305: LAMP2 SW. PCB
0
Re-attach LAMP DOORs.
14
0V
Replace MAIN PCB.