74
12.8. Power(2) Block Diagram
DMC-GH4 POWER(2) BLOCK DIAGRAM
PW UNREG
PW D1.2V 1
PW D3.15V
PW D1.2V
PW D4.9V
PW A3.1V
PW LEN4.2V
IC1051
(REGULATOR)
2
4
1
VOUT
VSS
VIN
CE
CL1101
CL1201
CL1301
CL1051
PW -1.1V
CL1701
PW A1.8V
IC1071
(REGULATOR)
3
2
1
4
VIN
VOUT
CE
VSS
CL1071
PW D1.8V
CL1031
CURRENT
LIMIT COMP.
PFM COMP.
+1% VOLTAGE
POSITIONING
CURRENT
LIMIT COMP.
CL1501
CL1601
QR1701
6
5
4
3
1
2
PW IS D1.8V
(To FP9001-20,21)
PW IS D1.2V
(To FP9001-14-18)
3
IC1031
(STEP DOWN CONVERTER)
1
6
4
5
PW SHT6.0V
LX
VIN
EN
FB
FB
GATE
DRIVER
ANTI-
SHOOT-
THROUGH
CONT.
STAGE
SAWTOOTH
GENERATOR
2.25MHz
OSC
LIMIT
HIGH
SIDE
LIMIT
LOW
SIDE
2
GND
PWM
COMP.
ERROR
AMP
VREF
VREF
+1%
SOFT START
VOUT RAMP
CONTROL
REFERENCE
0.6V VREF
THERMAL
SHUTDOWN
UNDERVOLTAGE
LOCKOUT 1.8V
3
MODE
4
5
3
1
6
Q1701
4
5
3
1
2
6
Q1702
2
Q9002
QR9002
VREGD
27
VREGD
VREGD2
62
Hx1
Hx1
ERROR AMP1
SERIAL I/F
ERROR AMP2
ERROR AMP3
ERROR AMP4
ERROR AMP5
ERROR AMP6
ERROR AMP7
CH1
STEP DOWN DC/DC
(Current mode)
64
Lx1
60
PGND1
57
Hx2
CH2
STEP DOWN DC/DC
(Current mode)
58
Lx2
59
PGND1
63
Lx1
54
Hx3
CH3
STEP DOWN DC/DC
(Current mode)
55
Lx3
53
PGND3
49
Hx4
50
Hx4
CH4
STEP DOWN DC/DC
(Current mode)
51
Lx4
52
PGND3
CH5
STEP DOWN DC/DC
(Current mode)
CH6
STEP DOWN DC/DC
(Current mode)
DRIVER
PROTECTION
SCP6
TIMER
SCP
TIMER
SS TIMER
12
21
RT
SEQ
OSC
UVLO
LDO
OVPCOMP
SHUTDOWN
VREGA
C
CP
DRIVER
P SW
1
VCC
23
CPLUS
CP SW
24
CMINUS
VREGD
VREGD2
29
VREGA
20
GND
0.3V
44
Hx5
47
Lx5
Lx5
43
PGND5
38
Hx6
39
Hx6
HVREG
DRIVER
VREGD
DRIVER
HVREG
DRIVER
VREGD
DRIVER
HVREG
DRIVER
VREGD
DRIVER
HVREG
DRIVER
VREGD
DRIVER
HVREG
DRIVER
VREGD
DRIVER
HVREG
DRIVER
40
Lx6
42
PGND5
46
41
Lx6
VREGD
VREGD
CH7
STEP UP DC/DC
(Current mode)
DRIVER
34
PGND7
33
VO7
SERIAL
I/F
ON/OFF
LOGIC
35
Lx7
61
25
HVREG
2
IC1001
(7CH SW REGULATOR)
56
PGND2
48
PGND4
26
11
VO3SEL
VBAT
3
VBAT
45
Hx5
SERIAL I/F
Vo3SEL
SERIAL I/F
SERIAL I/F
SERIAL I/F
SERIAL I/F
SERIAL I/F
37
PGND6
36
PGND6
30
VINREG
VINREG
REGOUT
VDD
VREGD2IN
31
22
28
SCPLDO
TIMER
10
16
CTL SEQ3
CTL SEQ2
CTL SEQ1
CTL1234
17
18
SCL
19
SDA
14
13
32
INV7
VO6
9
VO5
8
VO4
7
VO3
6
VO2
5
4
VO1
IC9002
(REGULATOR)
2
3
4
1
VOUT
GND
VDD
CE
G I2C CK
G I2C DAT
POWER CTL SW
POWER ON H
IS PWR ON3
(From IC9102-D11)
IS PWR ON4
(From IC9102-E8)
IS PWR ON1
(From IC9102-H9)
PW HDMI5V
CL1801
IC1081
(REGULATOR)
1
2
3
8
10
9
GDRV
VDD
RC
DIS/EN
SS
BP
4
7
ISNS
COMP
5
6
GND
FB
IC1041
(COMPARATOR)
5
1
3
2
4
GND
+IN
VCC
OUT
-IN
Q1041
8
7
6
5
1
2
3
4
Q1081
QR1042
QR1041
CL1002
CL1003
RL9131
Summary of Contents for Lumix DMC-GH4H series
Page 20: ...20...
Page 21: ...21...
Page 22: ...22...
Page 23: ...23 4 2 Lens...
Page 25: ...25 5 2 Lens...
Page 29: ...29 7 Troubleshooting Guide 7 1 Checking Method of Body and Interchangeable Lens...
Page 30: ...30...
Page 31: ...31...
Page 32: ...32...
Page 33: ...33...
Page 38: ...38 7 4 Failure Diagnosis of NFC...
Page 44: ...44 9 1 2 P C B Location...
Page 47: ...47 Fig D2 Fig D3 9 1 3 2 Removal of the Main P C B Fig D4...
Page 49: ...49 Fig D8 9 1 3 5 Removal of the Top Case Unit Fig D9 Fig D10...
Page 50: ...50 9 1 3 6 Removal of the Battery Case Unit and Capacitor P C B Unit Fig D11 Fig D12...
Page 51: ...51 9 1 3 7 Removal of the Wi Fi NFC P C B and NFC Unit Fig D13 Fig D14...
Page 52: ...52 9 1 3 8 Removal of the Tripod and Wi Fi BG FPC Fig D15 Fig D16...
Page 53: ...53 9 1 3 9 Removal of the Mount Box Unit Fig D17 Fig D18...
Page 55: ...55 Fig D21 Fig D22...
Page 56: ...56 9 1 3 12 Removal of the LCD IF P C B Fig D23 Fig D24...
Page 58: ...58 Fig D27 Fig D28...
Page 61: ...61 Fig D33 9 1 3 19 Removal of the EXT Mic P C B Unit Fig D34...
Page 62: ...62 9 1 3 20 Removal of the Flash P C B Unit Fig D35 Fig D36...
