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No sound
voltage input
at pin
of the E800 on the
MAIN board?
Turn off
the projector and
disconnect the Speaker
cable from ESPL.
Measure the resistance
of the Speaker.
Speaker
No control to RS-232C
Check the
RS-232C cable.
Are pin No. 2 and 3
crossed?
YES
Check the
power supply voltage
of E800 the voltage
correct?
YES
MAIN board
CP-S235 (C10SM2)
Check at operating mode
Are
NO
,
,
,
1
3
5
7
YES
: +12V
1
3
: +17V
: +6.6V
5
7
: +4.1V
about 8
0
or infinity
NO
Use cross cable
NO
Power unit (circuit)
15
Power unit (circuit)
MAIN board
The check after parts change
1. PC power supply OFF
2. Connection of cable
3. Projector starting
4. PC starting
*When not operating :
PC set up change of cable.
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