Hitachi CP-S335W, Service Manual

Page: 16 / 75

16
CP-S335(C9SM)/CP-X340, PJ552 (C9X)/CP-X345, PJ562 (C9XM)
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 MAIN PWB assembly Control
NO
YES
NO
YES
Use cross cable
Check the
RS-232C cable.
Are pin No. 2 and 3
crossed?
NO
YES
Make firm connection
of CNCT
Is the cable
CNCT connected to
ET01 on PWB assembly
MAIN firmly?
Power unit (circuit)
Check the
power supply voltage
of E800 the voltage
correct?
(1): +13.2V
(3): +17V
(5): +6.6V
(7): +4.1V
Speaker
No sound
NO
YES
Power unit (CIRCUIT)
Are
voltage input at pin
(1)(3)(5)(7) of the E800 on
the PWB assembly
MAIN?
about 8Ω
0Ω or infinity
PWB assembly MAIN
Turn off
the projector and
disconnect the Speaker
cable from ESPL.Measure
the resistance of
the Speaker.
(1): +13.2V
(3): +17V
(5): +6.6V
(7): +4.1V