Toshiba TLP-X4500 Service Manual page 17

No sound
Are voltage input
at each pin on the PWB
assembly Drive?
Are signal input
at each pin on the PWB
assembly Drive?
Disconnect
speakers from the
PWB assembly Drive, and
measure their
resistance.
PWB assembly Drive
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?
E800
E800
YES
E800
E800
PWB assembly Drive
TLP-X4500(P5XMLA)
Check at operating mode
(Make sure the state of MUTE and Volume,
and the setting of SPEAKER in OPTION menu)
NO
E800 : +16.5V
1
E800 : +15.0V
4
YES
E800 : +4.0V
6
E800 : +6.0V
12
E811 : +6.0V
1
NO
CHV26 : Audio (L)
CHV33 : Audio (R)
YES
infinity
about 8
NO
Use cross cable
NO
Power unit (circuit)
: +16.5V
1
: +15.0V
4
: +4.0V
6
: +6.0V
12
16
Power unit (circuit)
PWB assembly Signal
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 of cable.