Ricoh Aficio IS420 Service Manual page 70

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REMOVAL AND REPLACEMENT
October 9th, 1995
PCBs
5.4. PCBs
5.4.1. SCU Assembly
[B]
[A]
[C]
G404R522.wmf
[A]: SCU Assembly (2 screws)
[B]: Interface Bracket (2 screws)
[C]: SCU
NOTE: When replacing the SCU, put the old ROM (IC13) on the new SCU.
5.4.2. SDU
[A]
R404R523.wmf
First, remove the front shield plate (see section 5.3.5).
[A]: SDU (4 screws; 3 connectors)
5-20

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