Electric Circuit Diagrams
4 - 11
(1)
VISO (+5 V) power generating section
Isolation is performed with FT-2155 (F1) and then rectification and
smoothing are performed.
The VISO (+5 V) power generating section generates 5 V
voltage using REG103UA-5/2K5 (IC6).
3
2
1
D8
1SS302
3
2
1
D9
1SS302
VISO
ISOG
2
4
1
3
5
7
6
8
T1
FT-2155
+5V
DG
3
2
1
Q2
2SK2112
3
2
1
Q3
2SK2112
1
2
D2
CRS01
1
2
D3
CRS01
1
2
D4
CRS01
1
2
D5
CRS01
VISO POWER (+5V) SUPPLY
B100kHz
B100kHz_L
( 16 )
( 16 )
IC100kHz
IC100kHz_L
( 8,20 )
(+5V)
(+5V)
R89
24KF
R90
24KF
C52
0.1uFFZ
C53
0.1uFFZ
C54
0.1uFFZ
C55
0.1uFFZ
C56
0.1uFFZ
R93
1.2KF
R94
1.2KF
VOUT
1
VOUT
2
NR/ADJUST
3
GND
4
VIN
8
VIN
7
ERROR_L
6
ENABLE
5
IC6
REG103UA-5/2K5
2
1
+
C214
33UF/10V(C)5
2
1
+
C215
33UF/10V(C)5
2
1
+
C216
33UF/10V(C)5
R97
22F
R98
22F
( 8 )
1
2
6
4
8
IC2A
TC7W125FU
7
5
3
4
8
IC2B
TC7W125FU
R21
510F
DG
R22
510F
DG
C45
1000pFCHJ
C167
1000pFCHJ
DG
DG
+5V
+5V
C43
0.1uFFZ
C44
0.1uFFZ
1
2
3
14
7
IC49A
TC74VHC132FT
4
5
6
IC49B
TC74VHC132FT
9
10
8
IC49C
TC74VHC132FT
12
13
11
IC49D
TC74VHC132FT
+5V
C263
0.1uFFZ
C253
0.1uFFZ
F1
0434.750
(2) +1.9 V power generating section
Inp5 V to DC-DC converter generates the MAIN CPU core
v1.9 V. Output voltage Vout is set by the following expression
according to R92, R64, and R65.
V
out
=0.8(1+R92/(R64+R65))
SENSE
1
ITH
2
VFB
3
RUN/SS
4
VIN
8
PDRV
7
GND
6
SYNC/MODE
5
IC5
LTC1622CMS8
1
2
D7
D3FS4A
L6
LQH55DN4R7M
+5V
C164
220pFCHJ
C210
470pFCHJ
DG
+1.9VPOWER SUPPLY
3
1
4
2
5
6
Q1
SI3443DV
N.C
R88
0.051J(1W NPR)
R12
10KF
R92
91KF
R64
33KF
R65
33KF
C50
0.1uFFZ
C51
0.1uFFZ
C165
220pFCHJ
2
1
+
C158
100UF/10V(C)5
2
1
+
C218
330UF/6.3V(O)
+1.9V
Summary of Contents for FX-7302
Page 10: ...viii ...
Page 12: ......
Page 60: ...Chapter 2 2 40 ...
Page 62: ......
Page 86: ...Chapter 4 4 18 ...
Page 87: ...4 19 MAIN BOARD circuit diagram PCB 6956B Power connection table No 1 ...
Page 114: ...4 46 ...
Page 116: ......
Page 130: ......
Page 131: ...6 1 MAIN BOARD PCB 6956B component side ...
Page 132: ...6 2 MAIN BOARD PCB 6956B soldering side ...
Page 133: ...6 3 OPERATION BOARD PCB 6957B component side ...
Page 134: ...6 4 OPERATION BOARD PCB 6957B soldering side ...
Page 135: ...6 5 ECG AMP BOARD PCB 6731D component side ...
Page 136: ...6 6 ECG AMP BOARD PCB 6731D soldering side ...
Page 137: ...6 7 MARK SENSER BOARD PCB 6942 component side ...
Page 138: ...6 8 MAGAZIN UP BOARD PCB 6943A component side ...
Page 139: ...6 9 CONNECTION BOARD PCB 7028 component side ...
Page 140: ...6 10 ...
Page 142: ......
Page 151: ...7 9 Outline view 255 315 70 76 ...
Page 152: ...7 10 ...
Page 154: ......
Page 160: ...Chapter 8 8 6 ...
Page 161: ......