CP-X2520 ( M2-25ED ) / CP-X3020 ( M2-30ED )
No sound
(Make sure the state of MUTE , Volume and SPEAKER setting)
Disconnect
the speaker from the
PWB assembly Main and
measure its
resistance.
about 8
PWB assembly Main
Can not control to RS-232C
Check the
RS-232C cable.
Are pin No. 2 and 3
crossed?
YES
Are the
signals input at each
pins on the Cable?
Pin
Pin
NO
Make sure PC setup
infinity
Speaker
NO
Use cross cable
YES
PWB assembly MAIN
: RX
: TX
PWB assembly INPUT
15
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.