Power Supply Circuits - Canon DC10 E Service Manual

2-3 Power Supply Circuits

Figure 3 shows the power supply circuits.
The ON/OFF condition of each power supply voltage is controlled by the VTR ON signals output from the SUB MI-COM.
MAIN PCB
48
UNREG
LCD BL VFB 4
From LCD PCB
PANEL BL CTRL 3
(LUMINANCE CONTROL)
From LENS DRIVER
32
VTR ON
From SUB MI-COM.
33
34
35
36
LCD BL ON 37
From BACK END
ON/
Q1801
OFF
Q1803
VCC2
51
REG.
23
62
PWM
63
CH-1
20
70
PWM
71
CH-2
20
72
PWM
CH-3
IC3201
DC/DC
15
CONVERTER
CONTROL
73
PWM
CH-4
14
76
PWM
CH-5
11
77
PWM
CH-6
10
CLT
CLT3.4
CLT5
78
PWM
CLT6
CH-7
CLT7
CLT8
6
78
CONTROL PWM
CH-8
Fig. 3
E3V
UNREG
REG.
Q3203
Q3205
UNREG
REG.
Q3201
DC20 E ONLY
Q3211
UNREG
REG.
REG.
IC3200
Q3204
UNREG
REG.
Q3213
REG.
IC3203
UNREG
REG.
Q3202
DC20 E
ONLY
UNREG
CONTROL
Q1001, Q1002
REG.
Q1003, Q1004
CONTROL
Q3207, T3201
UNREG
REG.
Q3206
UNREG
REG.
Q3200
L3213
6
DC10 E, DC20 E
TECHNICAL DESCRIPTION
LPF PRISM 1.2V
DVDD 1.4V
MACS 1.4V
AVDD 1.4V
LPF
CAM 3.5V
DC10 E ONLY
CAM 3.3V
LCD 3.3V
USB 3.3V
FLASH SRAM 3.3V
DVDD 3.3V
AVDD 3.3V
LPF
LCD 5V
P 5V
AA 4.7V
LPF
AA 2.7V
AVDD 2.7V
DVDD 2.7V
LPF
HTG 2.7V
LPF
CAM 2.7V
CAM ON From CCM MI-COM.
CCD 15V
LCD 8.5V
CCD -7V
CCD VL ON From CCM MI-COM.
DDR 2.5V
DVDD 2.5V
SDRAM 2.5V
LCD BL POW