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Identifications Of Sides A/B In Circuit Board Diagrams - Hitachi VK-S274R Service Manual

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Safety Precaution for Repair > Notes When Using Service Manual

1-2-3 Identifications of sides A/B in circuit board diagrams

1) Board having a pattern on one side and parts on both sides.
Side A: Shows discrete parts, viewed from the pattern side.
Side B: Shows leadless parts, viewed from the pattern side.
2) Board having patterns on both sides and parts on both sides.
Side A: Shows parts and patterns which can be seen when the case is opened.
Side B: Shows parts and the pattern on the back of side A.
1-2-4 Table for indexing locations of parts
The table of "Identification of parts location" on circuit board diagrams shows locations of each part
as below explanations. The locations are indicated using the guide scales on the external lines of
diagrams.
1) One diagram indicated for each board
Symbol
Parts
No.
Location
IC
IC1201
2
Circuit No.
2) Two diagrams indicated for each board
Symbol
Parts
No.
Location
IC
IC1201
A - 2
A: Shows side A
B: Shows side B
Type of part
A
Zone "A" on board diagram
Zone "2" on board diagram
A
Zone "A" on board
diagram
Zone "2" on board
diagram
1 - 2

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