Olivetti d-Copia 600, Service Manual

Page: 385 / 454

2-3-8
2-3-3 Main PWB
Figure 2-3-5 Main PWB block diagram
MIP
for
CIS
MIP
for
CCD
Optional
printer
board
CPU
Flash
ROM
Flash
ROM
SDRAM
SDRAM
Memory copy
ASIC (MCP)
CODEC
MPWB
CPUCLK
33 MHz
RE, WE, CS, RESET
Image data
Basis signal
(RVSTIN_b, RCKIN, MREVD)
Image data
Basis signal(CLK, MRE, VSYNC)
Image
data
8 bit
Image data
Pseudo BD signal
OUTPEN
Cover open detection signal (R5V)
PVSYNC
Initial Laser ON signal (LDON)
D/A converter control signal for laser power adjust (DATA, CLK, LOAD)
EPWB
HDD
DIMM
Clock(ADCLK)
Horizontal scanning
synchronizing signal
(CCDSH)
Horizontal scanning synchronizing
signal (PHSYNC)
Vertical scanning synchronizing
signal (PVOUT)
Address bus/Data bus
*
*
CODEC
Basis
signal
(WCK,
WVST,
MREID)
Image
data
8 bit
Basis
signal
(WCK,
WVST,
MREID)
V
ideo timing controller (VTC)
CODE
DIMM
XIO
VSYNC
Image data
Basis signal
(CLK, MRE, HSYNC)
LV
D
S
VSYNC
Image data
Basis signal
(CLK, MRE, HSYNC)
Image data
Pseudo BD signal
Beam
detection
signal (BD)
BD+
BD-
VXINSEL
Video LVDS signal
(3 beams)
Auto laser power control
signal (a, b, c)
Laser ON enable signal
(LDEN0)
24V, PLGREM, PLGCLK
PLGRDY
RS422
H/L
Clock(ADCLK)
Horizontal scanning
synchronizing signal
(CCDSH)
Buffer
EEPROM
RTC
LCD
controller
OPWB
SBFM
LV
D
S
SHD
PWB
SPWB
CIS
SHD
PWB
CCD
PWB
LSU
SCAN
DIGKEY
PM
APC
PWB
CIS
PD
PWB
Service Manual Y104350-7