Electronic Circuit Description; Circuit Block Diagram; Power Source Line Block Diagram - Canon BJC-6200 Service Manual

BJC-6200

1.6 Electronic Circuit Description

1.6.1 Circuit block diagram

A block diagram of the printer's electronic circuit comprising the control board and carriage board is
shown below.

1.6.2 Power source line block diagram

The printer uses an internal power voltage of 5 V/24 V/3.3 V. The power source line's block diagram is
shown below.
AC in
Control Board
48MHz
(X101)
DC/DC converter
& reset IC
(IC501)
POWER switch PO0/INTP100
(SW401)
RESUME switch PO1/INTP101
(SW402)
Front cover switch PO2/INTP102
(SW403)
Power indicator
PA0
Error indicator
PA1
(LED401)
Ink sensor
ANI5
(CN401 Ink sensor)
Purge sensor
PC3
(CN402 Purge sensor)
Internal temperature sensor
ANI1
(TH401)
HDATA0,1 HSEL1A0,1 BENB0,1 *DTCK
HCLOCK0,1 HSEL1B0,1 HENB0-5 *ST0
HRSTX *LNST
HSEL2A0,1 SUBH0,1
HLAT HSEL2B0,1 DIA0,1 *RST
DIR ODD,EVEN DIK0,1 *SCHKR
* Signal name when a
scanner cartridge
Carriage board
is used.
Cartridge connector
BJ cartridge
or
scanner cartridge
(optional)
Figure 3-3 Block Diagram
+24 VDC
Motor driver
(IC401)
+24 VDC
Carriage motor (CN502)
Paper feed motor (CN503)
+5 VDC
EEPROM OP amp
(IC402) (IC201)
DRAM
Control ROM
(IC103)
(IC102)
+3.3 VDC
Figure 3-4 Power Source Line Block Diagram
Address bus ROM A0 - A19
Data bus ROM D0 - D15
CS0X
DRAM
(IC103)
MA0-9 16-Mbit
RAM_A0-9
A0-9
MD0-15
RAM_D0-15 D0-15
PB1-3
EEPROM (IC402)
CR_CLK
CR_STB
CR_DATA
Carriage motor
LF_CLK PM
Driver IC
LF_STB
(IC401)
LF_DATA
Paper feed motor
PM
PD2
ST1/TST2
ST2/SOT
Driver IC
ST3 ASF motor
PM
(IC503)
ST4/TST3
ST5/TST4
ST6/TST5
Paper-end sensor
PC1 (PS401)
Pick-up roller sensor
PC2
(PS402)
PC0
P04/PWM1
ANI3
*DIA HVH
*DIK HVDD
*RWR
*REN
*RDT
*VHLED
*VDD
Home position sensor
(PS1)
Printing position sensor
BJ cartridge
(CN6 Printing position sensor)
Motor driver
(IC503)
+24 VDC
ASF motor (CN504)
Thermistor
(TH401)
3-5
Part 3: Appendix
CE
8-Mbit
2 Kbit
+24 VDC
Q204: Cartridge (CN201)
+5 VDC
Q203: Printing position sensor (CN202)
Q401: Parallel interface (CN304)
Q402: HP sensor (CN202)
Q402: Pick-up roller sensor (PS402)
Q402: Paper-end sensor (PS401)
Q402: Purge sensor (CN402)
Q403: Cartridge (CN203)
Q404: Ink sensor (CN401)
+3.3 VDC
Q301: USB interface (CN305)