Main Controller Circuit - Kyocera Mita FS-C5016N - Color LED Printer Service Manual

2-3-3 Main controller circuit

U25
SDRAM
U28
SDRAM
U26
YC5
Ether
FLASH
I/F
T2
U23
Pulse
Ether
trans
X5
25.0MHz
YC4
USB I/F
YC3
PPDATA7-0
Parallel
I/F
YC11
Option
serial I/F
(IB-11E)
YC7
Engine
VIDEO P15-00, VIDEO N15-00
I/F
X'tal(SSCG)
16.6667MHz
2.5V Regulator
+5V +2.5V
U31
1.8V Regulator
+1.8V
+3.3V2 1.8V
U32
N_D[31:0]
U29
U27
X6
4.125MHz
X'tal(USB)
X4
48.00MHz
U21
PDTA7-0
Centro-
nics
trans-
ceiver
U3
X1 SSCG
Figure 2-3-5 Main controller circuit block diagram
U05, U07,
09, U11
Buffer
CPUD31-0
CPUA22-2
U06
Latch
U08
U10
LA20,LA11-2
LA22-5
LA21-2
LA21-2
ASIC
LA15-1
U02
SDRAM Address bus SDA12-0
U15
SDRAM
(256Mb)
U17
SDRAM
(128Mb)
U16
SDRAM
(256Mb)
U18
SDRAM
(128Mb)
SDRAM Data bus SDD31-0
Local Data bus LD31-0
PowerPC
750CXe
400MHz
U01
U19,U20
YC2
CFD15-0
Memory
card
YS1
System
LD31-0
DIMM
slot
U13
Font
LD15-0
mask
ROM
U12 U14
LD15-0
API ROM
socket
YC1
LD15-0
KUIOLV(3.3V)
YS2
SDD31-0
YS3
SDA12-0
SDD31-0
FS-C5016N
2-3-11