Hitachi CPX1 - Remote control; Changing the frequency of remote control signal; Using as a simple PC mouse & keyboard

12
CPX1(M1-20)
Power can not be turned on
Are
voltage
supplied at pins (7)
and (11) of E800 on the PWB
assembly MAIN in standby
mode?
Are
voltage supplied
at pins (1) and (6) of E800
on the PWB assembly
MAIN in standby
mode?
NO
YES
(7): GND
(11): +6.0V
YES
(1): +15V
(3): GND(for +15V)
(6): +17V
(7): GND(for +17V)
Not light
*: Be sure to unplug the power cord before measuring resistance.
Measure
resistance*
between pins (7) and (11) of
E800.
Disconnect TSW
from power unit circuit, and
measure resistance of
TSW.
Open
0
PWB assembly MAIN
Power unit (circuit)
Termal switch (TSW)
Open
Power unit (circuit)
Fuse on the power unit
(circuit)
NO
Mea-
sure resistance*
between pins (1) and (3),
and between pins (4) and
(7) of E800.
0
PWB assembly MAIN
Power unit (circuit)
Power unit (circuit)
Short
Open
Go to the next page
else
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
0
What are the state
of LAMP (D303) and TEMP
(D302) indicator?
blink (D303)
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