XG-NV2E (serv.man5). Supplement service manual 2 - Sharp Projector Service Manual (repair manual). Page 2

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

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