Christie D Series Service Manual page 17

Power cannot turn on.
Is
voltage
supplied at pins (5) and
(7) of E800 on the MAIN
PCB?
YES
Is
voltage
supplied at pins
(1) and (3), (9) and (19),
(20) and (19) of E800 in
standby
mode?
(1) +16.8V (Normal STBY)
(3) GND for (1)
YES
(9) +5.4V
(19) GND
(20) +16.8V
Is
the LAMP
indicator (DY03)
YES
Measure
the resistance*
between pins (1) and (2) of
E813 with the harness
disconnected.
0
Replace MAIN PCB.
LWU720i/LHD720i/LWU620i Service Manual
LWU720i / LHD720i / LWU620i
*: Be sure to unplug the power cord before measuring resistance.
NO
resistance* between
pins (5) and (7) of
(5): +14.3V
(7): GND
TSW (CNTS) from
POWER UNIT CIRCUIT,
and measure the
Replace TSW (thermal switch).
the resistance*
NO
between pins (1) and (3),
(9) and (19), (20) and
0V (Saving STBY)
Replace POWER UNIT CIRCUIT.
NO
Go to the next page.
DOOR SW PCB.
Open
Measure the resistance
between the terminals of the
switch while the lever
of the switch is
Replace LAMP DOOR SW PCB.
Measure
0
E800.
)
Disconnect
0
resistance.
Open
Measure
0
(19) of E800.
Open
the LAMP
0
closed.
Open
Replace MAIN PCB.
or
Replace POWER UNIT CIRCUIT.
Replace POWER UNIT CIRCUIT.
Replace MAIN PCB.
or
Replace POWER UNIT CIRCUIT.
Re-attach LAMP DOOR.
or
Replace LAMP DOOR.
16