1
8
ED-X31E / ED-X33E (C14B-20)
PWB assembly Main
PWB assembly INPUT
Check at operating mode
(Make sure the state of MUTE , Volume and AUDIO-SPEAKER)
No sound
infinity
about 8
Speaker
Disconnect
the speaker from the
PWB assembly Main and
measure its
resistance.
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.
Can not control to RS-232C
NO
YES
Use cross cable
Check the
RS-232C cable.
Are pin No. 2 and 3
crossed?
Make sure PC setup
NO
YES
PWB assembly MAIN
PWB assembly INPUT
Are the
signals input at each
pins on the Cable?
: RX
: TX
Pin
Pin
