Sharp XG-NV1E, Service Manual

Page: 55 / 66

2
XG-NV2U/E/M
SUPPLEMENT
1.Interconnecting the Fan Control PWB and the output sub-PWB
Here are the three basic ways.
<1> Production lot in December 1997
Fan Control PWB (Display; K9661DE without
√
.)
QCNW-4978CEZZ QCNW-4979CEZZ
QCNW-4982CEZZ QCNW-4983CEZZ
OUTPUT PWB
√
OUTPUT sub PWB
√
1
1
<2> Production lot in January 1998
Fan Control PWB (Display; S9661CE
√
.)
QCNW-4980CEZZ QCNW-4981CEZZ
Output sub PWB
√
1
1
<3> Production lot in February 1998 and on
1
Checking the fan control PWB
Turn on the projector power,
but the projector turns itself
off 2-3 seconds later.
Disconnect the relay connector
from the fan control PWB.
Fan control
PWB defective.
Fan
operated.
Other part
than the fan
control PWB
defective.
Fan
unoperated.
2
Checking for a fan trouble
Disconnect the lead from the
running fan.
Fan control
PWB
defective.
Fan still
running
No problem.
Fan
interrupted
3
Checking for a fan trouble
Get the running fan locked.
Fan control
PWB
defective.
Fan still
running
No problem.
Fan
interrupted
2. Troubleshooting for the Fan Control PWB
Precautions
* Some Fan Control PWBs are provided with a wire holder instead of the insulator lock. After repairing such a PWB,
remove the wire holder and bundle the wires with the insulator lock. If the insulator lock is cut off for repair purpose,
bundle the wires with a new insulator lock. (CE measures) Part code: LHLDW1033CEZZ
* If the output PWB has been replaced, readjustment is needed.
Fan Control PWB (Display; S9661CE
√
,F0136AD
√
,
√
.)
QCNW-4980CEZZ QCNW-5001CEZZ
Output sub PWB
√
1 0 2
2