Canon BJC 50 Service Manual - Page 127
Canon BJC 50 - Color Inkjet Printer Manual
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BJC-50 4.3 Power Supply Section 4.3.1 Block diagram of power supply section Connector AC Universal Adapter 13.5 Vdc Part 4: Technical Reference CNDC 1 Vpp Output Supply the power to motor and beeper Protective Circuit Noise Filter Step-down Transformer DC/DC Converter V2- ON Vcc 1 Output (5.1±0.25Vdc) Vcc 2 Output (5.0±0.25Vdc) Vcc 3 Output (5.0±0.25Vdc) Fuse (4.0A) Vcc2, Vcc3 V3- ON ON/OFF Circuit CNBT Lithium Ion Battery 10-14.3Vdc Recharge Circuit CHG- ON VH- ON Step-up Transformer DC/DC Converter VH Output (24.12±0.35Vdc) Reset Circuit Battery Shutdown Control Circuit Voltage Level Detection NMI P85 LPC 0 V2 V3 VHON ON ON DC LEV RESET ASIC (IC6) Vcc PWRON Vcc1 Power button Figure 4-28 Block Diagram of Power Supply Section 4-39
4.3 Power Supply Section
4.3.1 Block diagram of power supply section
4-39
BJC-50
Part 4: Technical Reference
DC/DC
Converter
Vcc2, Vcc3
DC/DC
Converter
Vcc1
Vcc
PWRON
RESET
NMI
Protective Circuit
Fuse (4.0A)
Power button
A S I C
( I C 6 )
V2
ON
V3
ON
P85
LPC 0
VHON
DC
LEV
V3- ON
V2- ON
VH Output
(24.12
±
0.35Vdc)
Vpp Output
Step-down
Transformer
ON/OFF
Circuit
Step-up Transformer
Reset Circuit
Voltage Level
Detection
Battery
Shutdown
Control Circuit
Lithium Ion
Battery
10-14.3Vdc
CNBT
Recharge
Circuit
CHG- ON
Noise
Filter
13.5 Vdc
CNDC 1
AC
Connector
Universal Adapter
Supply the power to motor and beeper
VH- ON
Vcc 1 Output
(5.1
±
0.25Vdc)
Vcc 2 Output
(5.0
±
0.25Vdc)
Vcc 3 Output
(5.0
±
0.25Vdc)
Figure 4-28 Block Diagram of Power Supply Section