Christie DWU851 Service Manual page 16

DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
LAMP ERROR is detected.
LAMP UNITs are installated
correctly.
OK
Does
the voltage of
the pins (7) and (9) of
ET02 of MAIN PCB change
during warming-
up?
YES
Try
replacing the LAMP
UNITs.
NG
Replace LAMP UNITs.
TEMPERATURE ERROR is detected.
Measure
the resistance
between pins of
harnesses CNOSS (ED04)
and CNISS (ED05) after
disconnecting them from
the DC RELAY
PCB.
NG
CNOSS: SENSOR-A PCB
CNISS: SENSOR-B PCB
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
NG
Re-install LAMP UNITs.
NO
Replace MAIN PCB.
(7) LAMP1
(9) LAMP2
Replace POWER UNIT CIRCUIT 1/2.
or
OK
Replace POWER UNIT BALLAST 1/2.
or
Replace POWER UNIT COOLING.
OK
Replace MAIN PCB.
15