Sony DSC-F717 Service Manual page 7

DSC-F717
COVER
COVER
For Schematic Diagram
• Refer to page 4-51 for printed wiring board.
1
SY-080 BOARD (3/7)
LASER/IR LED DRIVE(IR BLOCK)
A
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
B
C
PRELAMP_AF_ON
17
(6/7)
12
PRELAMP_AF_CONT
D
(2/7)
18
(6/7)
E
F
05
SY-080 (3/7)
4-2. SCHEMATIC DIAGRAMS 4-2. SCHEMATIC DIAGRAMS
2 3
Q253
2SB1462J-QR(K8).SO
5 0
4.9
Q251,253
R253
B+ SWITCH
47k
R254
4700
4.9
0
R268 C261
0.1u
10k
Q251
DTC144EMT2L
PD_LEV
IR_LED_ON
CAM_P_5V
D_2.9V
R265
10k
REG_GND
R251
33
R252
33
3.6
R256
1500
0
Q257
2SD2216J-QR(K8).SO
LED DRIVE
4-13
SY-080 BOARD SIDE A SY-080 BOARD SIDE A
4 5 6
IC252
COMPALATOR
C254
0.1u
IC252
NJM2125F(TE2)
0
+ V
G
0.1
- O
R285
XX
R269
820
C259
XX
R276 C260
0.1u
2200
R275
22k
IC253
MULTI VIBRATOR
R289 IC253 TC7WH123FU(TE12R)
22k
0 3
VCC
A
3 3
RX/CX
B
3
CX
CLR
0
Q
GND
SY-080 BOARD SIDE B SY-080 BOARD SIDE B
7 8
Q261
DTA144EMT2L
0
C265
10u
0
R282
4700
0 0
0
R284
2SB1462J-QR(K8).SO
470
0 0
LASER DIODE DRIVE
R278
R283
1500
6.8
0
0
2.2
C258 R281
XX
XX
Q260
DTC144EMT2L
R288
22k
C263
0.1u
Q260-262
LASER DIODE
CONTROL
C264
1u
R287
2.2
220k
0
Q262
DTC144EMT2L
4-14
9 10
Q258
LD_OUT
10
REG_GND
(2/7)
PD_OUT
IR_LED_A 9
(2/7)
IR_LED_K