Pw1 Power Circuit Description - Epson PhotoPC 800 Service Manual

EPSON PhotoPC 800

2.2.4 PW1 Power Circuit Description

2.2.4.1 Outline
This is the main power circuit and is comprised of the following blocks.
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Switching controller( IC501, IC502)
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Digital and analog system and LCD 5.0 V system power output (L5010,
Q5002, D5013, C5061)
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Digital 3.3V system power supply (L5017, Q5006, D5004, C5062)
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Digital 3.4V system power supply (L5001, Q5006, D5004, C5060)
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Analog and LCD system power supply (Q5007, T5001)
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Back-light power supply output (L5005, Q5008, D5014, C5005)
Figure shows PW1 circuit block diagram.
Operating Principle Operating principles of the Circuit Boards
Figure 2-15. PW1 Circuit Block Diagram
Revision A
48