Brother HL-7050 Service Manual page 98

Main PCB Block Diagram
+5v
POWER +3.3v
Regulator
GND +3.3v
PQ070XZ01Z
+5v
IEEE1284 I/F
+3.3v
USB I/F
+3.3v
PCI-BUS
BRnet
BOARD
(Option)
+5v
IDE Data BUS
HCT245
IDE
HARD DISK
+5v
COMPACT FLASH Data BUS
COMPACT HCT245
FLASH
+12v/-12v ADM202
RS-232C I/F
+3.3v/+1.6v
CPU
+1.6v(For CPU)
TXPR4955-266
CPU-Address/Data MultiBUS
+5v/+3.3v
ASIC
CS,DQM
MB87F4562
RAS,CAS
WE,MA
+5v/+3.3v
Local Data BUS
Gate Array
S1L50992F21A200
+5v
EEPRO
Resetn,Cmdn,Stsn,Cclk,Vsreqn,Vsyncn,Topn,Eifrstn,Scanclk,RDY,BD
M
HN58x
66MHz(CPU,SDRAM)
Clock Generator
33MHz(PCI)
C8750
48MHZ(USB,RS232C)
+3.3v +3.3v
SDRAM
DIMM
128M x2
(100pin)
(32MB)
2slots
256MB MAX
LCX16374
Data BUS
LCX245
+3.3v +3.3v
MASK Flash
ROM ROM
128M or 8M x2
64Mx2 (2MB)
(16MB)
Address BUS
+5v
Pclk,Sdin,Sdout PANEL
+5v
Video,BD,LDHALF,CAL LASER
ENB
+5v
ENGINE I/F
3-3
HL-2460 SERVICE MANUAL
HL2460 Main PCB Block Diagram