CHAPTER 3 THEORY OF OPERATION
3-6
Fig. 3-6 shows the block diagram of the main PCB of the HL-1470N printer.
Fig. 3-6
HL-1470N
Reset Circuit
P Font ROM
8.0 Mbytes
RAM
(4.0 Mbytes)
Option RAM (SIMM)
(max. 32Mbytes)
EEPROM (8192 x 8 bits)
CPU Core
(MB86832)
A S I C
Oscillator (33.33MHz)
Address Decoder
DRAM Control
Timer
FIFO
CDCC Parallel I/O
Soft Support
EEPROM I/O
Engine Control I/O
To Engine PCB
BUS
INT
To PC
USB I/O
To PC
Flash ROM
(2.0 Mbytes)
PCI Bus Control
Network Board
To PC
or Hub
Summary of Contents for HL-1470N
Page 7: ...6 1 106 065 X 1WVGT JWVG 2 0 ...
Page 59: ...CHAPTER 3 THEORY OF OPERATION 3 9 Fig 3 8 ...
Page 61: ...CHAPTER 3 THEORY OF OPERATION 3 11 Two 32 Mbits ROMs x 16 bit are fitted Fig 3 11 HL 1470N ...
Page 197: ... 26 4 6417 5 116 0 ...
Page 223: ...Appendix 15 Engine PCB Circuit Diagram CODE LJ88009001 B512136 CIR A XX NAME ...
Page 224: ...Appendix 16 Network Board Circuit Diagram HL 1470N CODE LJ8107000 B512058CIR A 29 NAME ...
Page 227: ...CODE NAME Appendix 19 High voltage Power Supply PCB Circuit Diagram ZLe MPH3212 ...
Page 238: ......
Page 248: ...12 ACCESSORIES MODEL HL 1230 1440 1450 14700N 84U Z31 Z32 Z33 Z34 920 18 2 3 4 1 ...