Sony RDR-GX257 Servise Manual

3-3E
RDR-GX257/GX380
FUSE
(F101)
NOISE FILTER
BLOCK
(C101,L102,
C102)
SNUBBER
BLOCK
(D101,C105
C106,R104)
DRIVE & S/W BLOCK
(IC101, D102, R105,
C104, C107, C108,C109,
R109, ZD101,ZD102)
PHOTO COUPLER
(IC102)
BD101
T101
TRANS
5V
1.25V
2.5V
R101
ԙ
Ԟ ԟ
Ԙ
ERROR
AMP
(IC103)
6
4
9
11
13
2
1
Ɣ
Y-CAP
C110
Y-CAP
C111
Ɣ
12

Ɣ
Ɣ
Ɣ
Ɣ
Ɣ
Ɣ
8
7
FEED-BACK
BLOCK
R121,R122,
C131,R123.
R124.R125
R126)
Ɣ
Ɣ
RECTIFIER &
SMOOTING BLOCK
(D121,D122,
C121,L121,C122)
RECTIFIER &
SMOOTING BLOCK
(D128,C130,
R138,ZD152)
3.3V
TO Main
(PVM03)
Ɣ
BR BL
(BK)(WH)
C103
Ɣ
14
15
12V REG & S/W BLOCK
(IC131,C133,R130)
5V REG & S/W BLOCK
(IC132,C134,R131)
Ɣ
!
!
!
!
!
!
Ɣ
Ԛ
Ɣ
Ɣ
Ɣ
ԛ
Ԝ
Ɣ
12V_Loader
RECTIFIER &
SMOOTING BLOCK
(D127,C126,C132,
R128,L123,C127)
RECTIFIER &
SMOOTING BLOCK
(D123,C123
,L122,C124)
RECTIFIER &
SMOOTING BLOCK
(D135,C129,R171)
RECTIFIER &
SMOOTING BLOCK
(D134,C120,R158
R160,R161, ZD151,R170)
10
2.5V REG & S/W BLOCK
(IC136,C140,R144
R146,C164)
3.3V REG & S/W BLOCK
(IC133,C137,R137,C142)
33V S/W Block
(Q167,R181,R182
R183,R184)
5V_I/O S/W Block
(Q168,R172,R173
D136,C163)
1.25V REG & S/W Block (DC-DC)
(IC151,R152,C158,C156,R153,
R154,R155,C157,L151,L152
C154,C152,R151,C159,R159
C155,C151,C153)
FD(-)
FD(+) S/W Block
(Q162,R168,R169,Q163)
S/W 5.3VA S/W Block
(Q161,R163,R164
R165,C162)
S/W FD(+)
-25VA
1W ‘H’
S/W 5.3VA
S/W 12VA
33V
Ɣ
Ɣ
P.CTL‘H’
Ɣ
Ɣ
Ɣ
Ɣ
Ɣ
Ɣ
S/W 12VA REG & S/W BLOCK
(Q164,R139,R140,R141,Q165,
Q166,C161,C160,ZD153)
5V_IO
1.8V
1.8V REG & S/W BLOCK
(IC134,C149,C138,C148)
Ɣ
Ɣ
TH01
3-3. POWER BLOCK DIAGRAM
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Sony RDR-GX257 Specifications

General

Recording modes	Extended Play (EP), High Quality (HQ), Long Play (LP), Standard Play (SP)
Device type	DVD recorder
Product color	Black
Composite video out	1
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Dimensions (WxDxH)	430 x 246 x 55 mm
Power requirements	AC 120V, 60Hz
Power consumption (typical)	17 W

Weight and Dimensions

Weight	2.5 g