Hitachi CP-X2511N Service Manual page 15

CP-X2511N(C15I-25N2) / CP-X3011N(C15I-30N2) / CP-X4011N(C15I-40N2) / CP-X2011N(C15-20N2) / ED-X45N(C15-20N2)
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 16
PWB assembly Main
Can not control to RS-232C
When
the projector is at the
standby mode setting
"SAVING" ?
NO
Check the
RS-232C cable.
Are pin No. 2 and 3
crossed?
YES
Are the
signals input at each
pins on the Cable?
NO
Make sure PC setup
infinity
PWB assembly INPUT
Set the STANDBY MODE
YES
as "NORMAL" in the
Advanced Menu > SETUP
menu
NO
Use cross cable
YES
PWB assembly MAIN
Pin : RX
Pin : TX
PWB assembly INPUT
15
Speaker
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 or cable change.