Hitachi CP-X2511N Service Manual page 11

CP-X2511N(C15I-25N2) / CP-X3011N(C15I-30N2) / CP-X4011N(C15I-40N2) / CP-X2011N(C15-20N2) / ED-X45N(C15-20N2)
Power can not be turned on
Are
voltage
supplied at pins (3)
and (5) of E800 on the PWB
assembly MAIN in standby
mode?
(3): +15V
(5): GND
YES
Are volt-
age supplied at pins
(1), (7), (9), (11) and (19) of
E800 on the PWB assembly
MAIN in standby
mode?
(1): +5V
(7): +17V
YES
(9): GND(for +17V)
(11): +6.0V
(19): GND
Does
LAMP (D303) or
TEMP (D302) indicator light
or blink?
NO
Measure
resistance* between
pins (1) and (2) of S801 when
the lamp door is secure.
0Ω
PWB assembly MAIN
*: Be sure to unplug the power cord before measuring resistance.
Measure resistance*
NO
between pins (3) and (5) of
E800.
Disconnect TSW
from power unit circuit, and
measure resistance of
TSW.
Power unit (circuit)
Measure
resistance* between pins
NO
(1) and (19),between pins (7) and (9),
and between pins (11) and (19)
of E800.
Power unit (circuit)
YES
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Open
Lamp door
Re-attach lamp door
Re-attach PWB assembly MAIN
11
0Ω
Open
Open
0Ω
0Ω
Open
PWB assembly MAIN
Power unit (circuit)
Thermal switch (TSW)
PWB assembly MAIN
Power unit (circuit)