Sony DSR-250, Service Manual

Page: 84 / 322

DSR-250/250P
3-7. POWER BLOCK DIAGRAM (2/4) ( ) : Page No. shown in ( ) indicates the page to refer on the schematic diagram.
3-13 3-14
D3305
D3307
D3306
Q3305
L3303
L3304
L3305
L3312
L3314
L3315
L3302
L3310
L3311
L3313
L3316
L3309
Q3312
Q3313
Q3314
Q3309
L3307
L3306
L3308
L3318
L3319
30
1 2
64
VCC(0)5678
43
51
56
50
13
29
DC/DC CONVERTER
33
27
55
28
46
57
49
60
8
7
3
34
4
1
5
7
8
3
2
35
4
1
6
7
2
3
37
44
48
47
EMERGENCY
DETECT
SWITCHING
T3300
D3308
RECT
RECT
RECT
Q3306,
3307
VCC(0)1234
VCC
VSS(0)1234
VSS(0)567
VDD(0)123
VDD(0)567
+IN8
-IN8
OUT8
VREF
VB
RT
CT
CTL1-6,8
CTL7
OUT2-1
OUT2-2
OUT7-1
OUT7-2
OUT4
OUT1-1
OUT1-2
-IN2
-IN7
-IN4
-IN1
SWITCHING
Q3321
SWITCHING
SWITCHING
Q3322
Q3323
SWITCHING
SWITCHING
Q3308
Q3318
SWITCHING
T3301
D3311
RECT
D 3.1V
D 1.9V
A 2.8V
AU 2.8V
D 2.8V
A 4.6V
RP 4.6V
AU 4.6V
1
4
3
-IN3
OUT3-1
53
OUT3-2
40
54
8
VTR DD ON
5.2V
REG
EMERGENCY
DETECT
Q3325
-7V REG
Q3333-3335,3338
Q3315-3317,3324
VI-156 BOARD(1/3)
CN022
RECT
D3310
COMP
11
VREF
SWITCHING
SWITCHING
SWITCHING
D3312
RECT
AU 4.6V
A 4.6V
PANEL 2.8V
PANEL 2.8V
AU 2.8V
A 2.8V
D 1.9V
MS 3.1V
RP 4.6V
HI UNREG
TO
POWER
BLOCK
(3/4)
CAM -7V
PANEL 4.6V
(4-59)
MT 5.2V
1.5V REG
Q3340,3341
SHOE ON
VTR DD ON
CAM DD ON
HI UNREG
MT 5.2V
VTR UNREG
PANEL 13.5V
PANEL 4.6V
D 2.8V
D 3.1V
CAM 12V
CAM -7V
MS 3.1V
D 1.5V
D 1.5V
(4-62)
2
IC3300
5 13.5V REG
12V REG
Q3327,3331,3332,3337
Q3344,3345,3348,3349,3351
PANEL 13.5V
CAM 12V TRF 2.8V
TRF 2.8V
16
AU 8.0V
8V REG
AU 8.0V
RECT
D3309
Q3326,3328,3336
AMP
IC3301
(SEE
PAGE
3-15)
7
5
6
9
8
TO
POWER
BLOCK
(1/4)
POWER CONT
LIGHT CONT
HI UNREG
UNREG +12V
+8.4V 1
+8.4V 2
+8.4V 3
+8.4V 4
+8.4V 5
VTR DD ON SHOE ON
Q3352
AU VCC
IC3301
Q3353
RIPPLE
FILTER
8.4V
UNREG 12V
AU VCC
TO
POWER BLOCK(4/4)
(SEE PAGE 3-17)
(SEE
PAGE
3-12)