Mcu Pwb Board; Lvps Unit; Figure 1-20. Mcu Pwb Board - Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual
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Also See for C11C605001 - DFX 9000 B/W Dot-matrix Printer:
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Service Manual
1.5.4 MCU PWB Board
This is the engine controller board. It consists ofanpPD782388-bit CPU (including a MASK ROM)
and a gate array. The board controls laser scannin g (the polygon mirror drive motor), image
synchronization, laser beam pulse width, and power.
1.5.5 LVPS Unit
The LVPS unit is the low-voltage supply unit, which consists of a switching regulator circuit. It
converts the AC line voltage into +24V and +5 VDC voltages. There are two types of power supply
board, the 120V type and 220/240V type. The difference between the two circuits is only in the
input section.
Rev. A
-
CPU uPD78238
/
Figure 1-20. MCU PWB Board
Figure 1-21. LVPS Unit
General Description
(Ul)
SMA7029M
1-37
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