15
CP-A100 / ED-A100 / ED-A110 (A1DN)
Power can not be turned on
Are 
voltage 
supplied at pins (8) 
and (13) of E800 on the PWB 
assembly MAIN in standby 
mode?
Are voltage 
supplied at pins (2), 
(3), (5), (6) of E800 on the PWB 
assembly MAIN in standby 
mode?
NO
YES
(8): +6.0V
(13): GND
Does 
LAMP (D303) or 
TEMP (D302) indicator light 
or blink?
YES
(2): +15V
(3): GND(for +15V)
(5): +17V
(6): GND(for +17V)
NO
*: Be sure to unplug the power cord before measuring resistance.
Measure resistance* 
between pins (8) and (13) of 
E800.
Disconnect TSW 
from power unit circuit, and 
measure resistance of 
TSW.
Open
0Ω
PWB assembly MAIN
Power unit (circuit)
Thermal switch (TSW)
Open
Power unit (circuit)
Fuse on the power unit 
(circuit)
NO
Measure 
resistance* between 
pins (2) and (3), and between 
pins (5) and (6) of 
E800.
0Ω
PWB assembly MAIN
Power unit (circuit)
Power unit (circuit)
Short
Open
Go to the next page
YES
Measure 
resistance* between 
pins (1) and (2) of S801 when 
the lamp door is secure.
Lamp door
Re-attach lamp 
door
Re-attach PWB 
assembly MAIN
PWB assembly MAIN
Open
0Ω