Christie DWU851 Service Manual page 17

DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
2, 3, 9, 10
Is
voltage
supplied to the pin (2)
of connectors*** for fans in
the DC RELAY
PCB?
***: ED02, ED03,
about 12V
Observe
the voltage
waveforms at pin (1) of
connectors*** for fans in
the DC RELAY
PCB.
NG
ED08: FAN2, ED07: FAN3, ED03: FAN9, ED02: FAN10
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
FAN ERROR is detected.
Is voltage
supplied at pins (5) and
(7) of E801 on the MAIN
PCB?
(5): +14.3V
(7): GND
NO
the FAN number*
displayed in the Status
Monitor.
5, 6, 7, 8
**: E803, E804, E805, E808
Is voltage
supplied to the pin (2)
of connectors** for
fans?
about 12V
Observe
the voltage
waveforms at pin (1) of
connectors** for
fans.
NG
E803: FAN5, E804: FAN6,
E805: FAN7, E807: FAN8
5V or less
Replace DC RELAY PCB.
ED07, ED08
OK
Replace DC RELAY PCB.
*: FAN1: LAMP 1 EXHAUST FAN
FAN3: LAMP 1 DOWN FAN
FAN5: LAMP 2 UP FAN
FAN7: POWER EXHAUST FAN FAN8: POWER INTAKE FAN
FAN9: BALLAST FAN
NG
Replace POWER UNIT CIRCUIT2.
1, 4
5V or less
Replace MAIN PCB.
NG
Re-attach LAMP DOORs.
OK
Replace MAIN PCB.
5V or less
Replace MAIN PCB.
OK
Replace MAIN PCB.
OK
Replace LAMP UNIT.
16
FAN2: LAMP 1 UP FAN
FAN4: LAMP 2 EXHAUST FAN
FAN6: LAMP 2 DOWN FAN
FAN10:IRIS FAN
LAMP DOORs are attached
correctly.
OK
Measure
voltage at pins (9) and (13)
of E802.
about 12V
Observe
the voltage waveforms
at pins (8) and (12) of
E802.
NG
Try
replacing the LAMP
UNIT.
NG
(8), (9): FAN1, (12), (13): FAN4