Hitachi PJ-TX100 Service Manual page 16

Can not 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
1 : +12V
3 : +17V
5 : +6.6V
7
: +4.1V
PWB assembly Main
PJ-TX100(C11H)
NO
Use cross cable
NO
Power unit (circuit)
16
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.