Hitachi CP-SX1350W, Service Manual

Page: 16 / 78

16
CP-SX1350(P5SX+)
PWB assembly Drive
Check at operating mode
(Make sure the state of MUTE and Volume,
and the setting of SPEAKER in OPTION menu)
No sound
NO
YES
NO
YES
PWB assembly Signal
Power unit (circuit)
Are signal input
at each pin on the PWB
assembly Drive?
infinity
about 8
Speaker
Disconnect
speakers from the
PWB assembly Drive, and
measure their
resistance.
Are voltage input
at each pin on the PWB
assembly Drive?
CHV26 : Audio (L)
CHV33 : Audio (R)
: +16.5V
: +15.0V
: +4.0V
: +6.0V
: +6.0V E800
E800
E800
E800
E811
1
1
4
6
12
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
PWB assembly Drive
NO
YES
NO
YES
Use cross cable
Check the
RS-232C cable.
Are pin No. 2 and 3
crossed?
Power unit (circuit)
Check the
power supply voltage
of E800 the voltage
correct?
: +16.5V
: +15.0V
: +4.0V
: +6.0V E800
E800
E800
E800
1
4
6
12