Sony DSR-250, Service Manual

Page: 129 / 322

DSR-250/250P
4-85 4-86
For Schematic Diagram
• Refer to page 4-79 for KY-049, EJ-034 printed wiring boards.
• Refer to page 4-81 for FC-074, LL-010 printed wiring boards.
USER FUNCTION
FC-074, LL-010, FS-082
VCR FUNCTION
KY-049
EJECT
EJ-034
/ /
LND471
SEIDEN GND
XX
R473
LND472
SEIDEN GND
XX
D471
4P CN471
1 KEY_AD0-5
2 LIGHT
3 LOW_CUT
4 GND
22k
R471
LND473
SEIDEN GND
01BZA8.2(TE85L)
D472
LND475
SEIDEN GND
LND474
SEIDEN GND
LND402
SEIDEN GND
6800
R402
0
R408
6P
CN401
1 CH1_LEVEL
2 F_CH1_LEVEL
3 GND
4 KEY_AD7
5 XS/S_SW
6 GND
01BZA8.2(TE85L)
D402
22k
R401
S401
2 3 1
1200
R405
S403
(5k/5k)
RV401
LND401
SEIDEN GND
1500
R404
S402
S404
2 3 1
XX
R406
3300
R403
XX
R407
01BZA8.2(TE85L)
D401
S405
S291
6P CN291
1 NC
2 XEJECT
3 NC
4 GND
5 GND
6 GND
6P CN262
1 NC
2 XEJECT_SW
3 NC
4 GND
5 GND
6 GND
6800
R269
LND261
SEIDEN GND
D261
01ZA8.2(TPL3)
XX
R261
1200
R262
S268
22k
R270
S264
6800
R268
S269
8P CN261
1 GND
2 XEJECT_SW
3 GND
4 GND
5
KEY_AD1
6 KEY_AD0-5
7 KEY_AD0
8 GND
S265
3300
R267
S262
1200
R263
S270 S266
S261
1500
R265
S263
1500
R264
S271
3300
R266
S267
LND221
CH.GND
S222
1
2
4
5
6
9
10
7 8
XX
R222
3P
CN221
1 KEY_AD2-5
2 NC
3 GND
MA8082-(K8).S0
D221
LND222
CH.GND
S221
XX
R221
01ZA8.2(TPL3)
D222
22k
R223
1
A
EDIT+ EDIT-/REC REV
LIGHT
MANU AUTO
LOW CUT
OFF ON
WHITE BAL SHUTTER
INDEX MARK OFF/ON
FADER AUDIO LEVEL
EJECT
STOP
PAUSE
PLAY
FF FRAME+ AUDIO_DUB SLOW FRAME-
INFINITY
AUTO
PUSH AUTO
MANU
S473 S474
S471 S472
TO
VI-156 BOARD(23/25)
CN021
(SEE PAGE 4-57)
16
XX MARK:NO MOUNT
LL-010 BOARD
-REF.NO.:1000 SERIES-
XX MARK:NO MOUNT
-REF.NO.:2000 SERIES-
FS-082 BOARD
START/STOP OFF/ON
TO
VI-156 BOARD(23/25)
CN004
(SEE PAGE 4-57)
FC-074 BOARD
TO
VI-156 BOARD(23/25)
CN019
(SEE PAGE 4-58)
EJ-034 BOARD
KY-049 BOARD
REW REC REC
TO
VI-156 BOARD(23/25)
CN013
(SEE PAGE 4-57)
10
G
H
5 13 6
E
3 8
B
12
D
C
9 2 4 7
I
F
11 15 14
USER FUNCTION
USER FUNCTION
XX MARK:NO MOUNT
VCR FUNCTION
-REF.NO.:1000 SERIES-
-REF.NO.:1000 SERIES-
XX MARK:NO MOUNT
EJECT
-REF.NO.:1000 SERIES-
XX MARK:NO MOUNT
USER FUNCTION