Sony VPL-F420HZ, Service Manual

Page: 61 / 192

2-5 (E)
VPL-FHZ55
2-4-3. Preparation
1. Remove the top panel assembly. (Refer to Section 1-4-3.)
2. Disconnect the harness from the connector (CN303) on the C board.
3. Connect the connector (CN303) on the C board and the connector (CN22) on the XL board using the
tool harness, then connect the connector (CN21) on the XL board and the switching regulator
(CN301) using the harness disconnected in step 2.
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Make sure that the tool harness is connected to the correct position.
4. Attach the top panel assembly.
In order to prevent a short circuit with other metal, attach the insulation tape so that it covers each
terminal portion of the two connectors on the XL board.
5. Connect the power cord to this unit.
6. Connect this unit and PC using the RS-232C cross cable.
7. Install the Laser Projector Service Tool software on PC.
8. Start the Laser Projector Service Tool software.
Top view of this unit
Connector (CN303) on the C board
Tool XL board
Tool harness
Harness disconnected from
the switching regulator (CN301)
CN22 CN21