Hitachi CP-WX11000 Service Manual page 14

Power cannot be turned on
Are
voltage
supplied at pins
(1),(9),(11) and (13) of E800
on the MAIN board
in standby
mode?
(1): +4.0V
(9): +6.0V
YES
(11): GND
(13): +17V
Does
LAMP (DY02) or
TEMP (DY03) indicator light
or blink?
PWB assembly MAIN
CP-WX11000 ( P6WX )
*: Be sure to unplug the power lead before measuring resistance.
resistance* between
NO
pins (1) and (11), between pins
(9) and (11), and between pins
Disconnect TSW
from power unit circuit and
measure resistance of
Power Unit (Circuit)
YES
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Lamp Door Re-attach lamp
door
Measure
(11) and (13) of
E800.
Open
Open
TSW.
Short
Fuse on the Power Unit
14
0
PWB assembly MAIN
Power Unit (Circuit)
Thermal Switch (TSW)
(Circuit)