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3 • Theory Of Operation
3.6 Electronics
J123
J115
Transport
Motor
J101
Figure 3-35 B Controller (Main Logic) Board
3-34
PCBs (cont'd)
3C00/4C00/5C00 Controller Main Logic Board. This board contains all the
components that provide the computing resources for the mailing machine,
among them the CPU, flash memory, DRAM, BBRAM and a host of other
components that provide drives to all motors and sensors, and support for
the PSD/iButton hardware.
J125 PS
MODEM
NVRAM
Battery
under
Modem
Card
PSD
NOTE: Boards may vary; some connectors are not used
DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)
J128

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Dm400c, Dm475, Dm450c

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