ViewSonic PJ1158-1 Service Manual page 59

4. Attaching the dichroic optics unit
Put the dichroic optics unit on the bottom case, and tighten screws in
order of 1, 2, 3 and 4 as shown in the diagram.
5. Replacing the power unit fan
Be sure to do the following works before changing the power unit fan.
a. Assemble the power unit fan and fan cushion as described below.
1) Attach the fan bracket to the new power unit fan using 2 screws.
2) Stick the Fan cushion along the right side of the fan as
shown in the diagram.
Note:
• If you install the new fan without the fan cushion, the
fan vibration in operating might make noise.
• Be careful not to invert the fan when assembling the
exhaust fan assembly.
6. Replacing the PWB assembly NETWORK
Attach the bracket to the PWB assembly NETWORK covering the LAN Jack completely.
ViewSonic Corporation
FAN bracket
56
Confidential - Do Not Copy
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power unit fan
Fan cushion
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PJ1158-1