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MINOLTAFAX 5600 Machine Composition
2-3
2.2 Main Control PWB
The main control PWB controls the operations of all machine functions.
Jumper JP2 on the main control PWB controls the programmable data memory backup. Memory data
that is backed-up in the event of a power failure includes user programmed information such as the date,
time, TTI, autodialer, memory switches, etc.
Jumper JP3 on the main control PWB controls the data memory back-up. Memory data that is backed-up
in the event of a power failure includes any stored documents.
NOTE
: JP1, JP2 should remain in the "ON" position at all times.
Main control PWB block diagram
The main control unit controls all function of the machine. Following are its components:
Fax Engine
CPU
--- The CPU is t he core of the cont rol section. It controls all other sections.
Scanner Control
--- Processes the signal from the Charge Coupled Device (CCD).
Modem
--- The modem facilitates modulation and demodulation of data for far communication.
Memory (FLASH MEMORY, SRAM, DRAM)
FLASH MEMORY
--- The F LASH MEMORY contains all program instructions for unit operation.
SRAM
--- The SRAM, which is backed-up by a lithium battery is used to store user programmed
information.
DRAM
--- The DRAM , which is backed-up by a battery is used to store memorized documents along
with being a buffer.
Lithium Battery Precautions:
There is a danger of an explosion if the battery is installed incorrectly. Replace the battery with the
equivalent type. Discard used batteries according to the battery manufacturer’s instructions.
MINOLTA does not recommend the independent replacement of this battery. The battery is sold only
as a component part of the main control PWB and cannot be purchased separately from MINOLTA.
Il y a un danger d'explosion s'il y a un remplacement incorrect de la batterie. Remplacer uniquement
avec une batterie du même type ou d'un type recommandé par le constructeur. Mettre au rebut les
batteries usagées conformement aux instructions du fabricant.
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