Strobe Circuit; Power Circuit; Circuit Diagrams; Circuit Waveforms - Sanyo VPC-S122EXBL Service Manual

STROBE CIRCUIT

K
CHARGING CIRCUIT
C5401
POWER FILTER
BLOCK
J CN541
12
UNREGST
AL3.2V 11
CHG_SEL 9
CHG 8
ZCHGDONE 7
IC541 10 3
I
5
FLCTL
STROBE
TO CP1(DMA) CHARGE
CN102
6 OSCILLATION
IPEAK
CIRCUIT
CHARGE
9
MONITOR
H
CIRCUIT
4 IGBT
DRIVER
G
SHDNB1
IC501
SWITCHING
AVDD
CONTROL
DOUT[12,11]
F
PVDD[2,1]
II1
LOUT[12,11]
VPIN8
OUT8,II8
E
SHDNB23
SHDNB68
VPIN6
LOUT6
II6
LOUTA[21,22]
D
LOUTB[21,22]
DOUT[21,22]
II2
LOUT[31,32]
II3
C
OUT4
II4
OUT5
II5
B OUT7
II72
II71
CS
DATA
CLK
A
1 2 3 4
T5401 D5402
OSCILLATION RECTIFIER
C5412
TRANSFORMER CIRCUIT
(ST2)
1,2
Q5402
EMISSION
CONTROL
LIGHT EMITTING
CIRCUIT
ELEMENT
(XENON TUBE)
7
TRIGGER
CIRCUIT
LIGHT EMISSION CIRCUIT
SG41G_ST_BLOCK

POWER CIRCUIT

L5301
BOOST3.8V
STEP UP
CIRCUIT
IC503
+3.4V(A)
REG
PON
PON2
L5061
VDD1.8
STEP DOWN
IC504
CIRCUIT VDD1.8_LVDS
REG
L5021
VDD3
STEP UP & DOWN
CIRCUIT
L5031
VDD1.1
STEP DOWN
CIRCUIT
L5041,Q5041
-7.0V(A)
INVERTER
CIRCUIT
L5051,Q5051
+14.5V(A)
STEP UP
CIRCUIT
L5071,Q5071
LCDAN
STEP UP
CIRCUIT
LCDCA
PW_CS
PW_DATA
PW_CLK
SG41G_PW_BLOCK
5 6 7 8

CIRCUIT DIAGRAMS

TEST POINT
LOCATION
IC101
PIN A3
XOUT
1V/div
10ns/div
IC101
PIN AD19
RTC_CKOUT
1V/div
20µs/div
TO DMA
9 10 11 12
C7

CIRCUIT WAVEFORMS

TEST POINT
WAVEFORM
LOCATION
CN171
PIN 7
DCLK
1V/div
20ns/div
CN171
PIN 19
V1
1V/div
40µs/div
CN171
PIN 21
V3
1V/div
40µs/div
CN171
PIN 33
FRP
1V/div
40µs/div
13 14 15 16
K
WAVEFORM
J
I
H
G
F
E
D
WF-SG41G
C
B
A
17 18 19