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ER-A770 (serv.man4). ERA770 V2 (With Circuit Descriptins)Service Manuals - Sharp EPOS Service Manual (repair manual). Page 10

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7. How to use service tools
7-1. Expansion PWB : CKOG-6724BHZZ
Extrenal view
Plain view
Connection diagram
7-2. MCR test card: UKOG-6718RCZZ
Used when executing the diagnostics of the UP-E12MR.
External view
Test pins : Used to check the bus signals.
Bus connector : Used to check the bus signals.
Connected to the UP-3300 Mother PWB.
ER-A770 bus connector
ER-A7RS
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