Hitachi CPX2(M1-20ML) Service Manual page 12

Power can not be turned on
Are
voltage
supplied at pins (7)
and (11) of E800 on the PWB
assembly MAIN in standby
mode?
(7): GND
(11): +6.0V
YES
Are
voltage supplied
at pins (1) and (6) of E800
on the PWB assembly
MAIN in standby
mode?
(1): +15V
(3): GND(for +15V)
YES
(6): +17V
(7): GND(for +17V)
What are the state
of LAMP (D303) and TEMP
(D302) indicator?
Not light blink (D303)
Measure
resistance*
between pins (1) and
(2) of S801 when the
lamp door is
secure.
0Ω
PWB assembly MAIN
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CPX2(M1-20WL)
*: Be sure to unplug the power cord before measuring resistance.
resistance*
NO
between pins (7) and (11) of
Disconnect TSW
from power unit circuit, and
measure resistance of
Power unit (circuit)
sure resistance*
NO
between pins (1) and (3),
and between pins (4) and
(7) of E800.
Power unit (circuit)
else
Go to the next page
Open
Lamp door
Re-attach lamp
door
Re-attach PWB
assembly MAIN
12
Measure
0Ω
E800.
Open
Open
TSW.
Short
Fuse on the power unit
(circuit)
Mea-
0Ω
Open
PWB assembly MAIN
Power unit (circuit)
Thermal switch
(TSW)
PWB assembly MAIN
Power unit (circuit)