Board Component - Epson Photo PC-750Z Service Manual

EPSON PhotoPC-750Z

2.1 Board Component

Majority of the EPSON PhotoPC-750Z consists of the electric circuit
boards. The figure below shows those boards and explains their
functions.
Figure 2-1. Board Location
Operating principles
Table 2-1. Functions of each board
Name
SY1
CA1
TB1
ST1
CA2
TB1
ST1 board has a danger of getting electric shock
because of C5412. Hold the edges of this board and
never touch the board surface when you handle this
board. DIscharge the charged energy of C5412 for
safety before handling this board. (See Chapter 4 for
more details)
Board Component
Function
4-bit microprocessor as the central system is mounted on
the back of this board. Power supply/Stop control, STROBE
charge/discharge control, Clock control and back up for
setting and internal communication bus control are handled
by this board.
CCD is directly soldered on this board. Lens with zoom is
fixed on the CCD. H/V Driver to drive the CCD, CDS/AGC to
correct the image and A/D converter circuit to transfer the
data to the internal ASIC are mounted on this board.
This board takes power from the batteries. Shutter switch is
mounted on this board.
This board generates power supply for digital and analog.
Also, electrolytic condenser for flash, connectors for AC
adapter and for video output are mounted on this board.
This board has LCD monitor control, optional memory flash
card control, and also works as the internal control system
for the photographic processing.
Small board mounted on the LED for Self-Timer. It is all
right if this board is not connected during adjustment and
operation check.
Revision A
24