Hitachi SM0599 Service Manual page 15

Power can not be turned on
Are
voltage
supplied at pins (8)
and (13) of E800 on the PWB
assembly MAIN in standby
mode?
(8): +6.0V
(13): GND
YES
Are voltage
supplied at pins (2),
(3), (5), (6) of E800 on the PWB
assembly MAIN in standby
mode?
(2): +15V
(3): GND(for +15V)
YES
(5): +17V
(6): GND(for +17V)
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.
0
PWB assembly MAIN
CP-A100 / ED-A100 / ED-A110 (A1DN)
*: Be sure to unplug the power cord before measuring resistance.
Measure resistance*
NO
between pins (8) and (13) of
Disconnect TSW
from power unit circuit, and
measure resistance of
Power unit (circuit)
Measure
resistance* between
NO
pins (2) and (3), and between
pins (5) and (6) of
Power unit (circuit)
YES
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Open
Lamp door
Re-attach lamp
door
Re-attach PWB
assembly MAIN
15
0
E800.
Open
Open
TSW.
Short
Fuse on the power unit
0
E800.
Open
PWB assembly MAIN
Power unit (circuit)
Thermal switch (TSW)
(circuit)
PWB assembly MAIN
Power unit (circuit)