System Control Circuit C8; Circuit Diagrams; Circuit Waveforms C8 - Sanyo VPC-X1200GXR Service Manual

K
BOOST4.2V
AL3.2V
BACKUP3.2V
J
8 7 6 5
Q3001
1 2 3 4
BACKUP
I
CN911
Z3001
CA1
H
ST1
SELF LED
CHG
G
ZCHGDONE
S3501
F
S3502
BACK UNIT
E
OK MENU PLAY SCENE
D
DOWN LEFT RIGHT UP
WIDE TELE --- ---
--- --- PW_TEST TEST
C
B
A
1 2 3 4
SYSTEM CONTROL CIRCUIT
UNREGSY
59 VDD1
XCIN
9 VDD2
XCOUT
36 VDD3
57 CF1
53 57 RESET
49 BAT_OFF
60 BATTERY
PLLEN
56 VSS1
IC301 COMREQ/ZBOOT
10 VSS2
SREQ
35 VSS3
8bit MICRO-
PROCESSOR
ASICSDI
2 BACKUPCTL
ASICSDO
11 SELFLED
ASICSCK
40 CHG
MRST
46 ZCHGDONE
USB_CONNECT
51 KEY_POWER
CARD
52 KEY_1st
ZJACKIN
26 KEY_2nd
SDDET
VBDET
21 SCAN IN0 REFRESH_CTL
22 SCAN IN1
23 SCAN IN2
24 SCAN IN3
PON
44 SCAN OUT0
PON2
43 SCAN OUT1
STB_DDR
LCD_PWM
42 SCAN OUT2
BLON
41 SCAN OUT3
BAT_T
BAT_T_V
SG21F_SY_BLOCK
5 6 7 8

CIRCUIT DIAGRAMS

CIRCUIT WAVEFORMS
TEST POINT
LOCATION
54
X3002
IC101
32.768KHz 32.768KHz
55
PIN AC15
XO
1V/div
10ns/div
PLLEN
18
ZBOOT_COMREQ
45
SREQ
50
ASICSDI
63
ASICSDO
64
ASICSCK
1
MRST
14
USBCNT
20
ZCARD
25
ZJACKIN
48
SDDET
15
VBDET
16
REFRESH_CTL
17
PON
27
PON2
5
STB_DDR
6
LCDPWM
8
BLON
28
BAT_T
62
TO DMA
4
9 10 11 12
C8
CIRCUIT WAVEFORMS
TEST POINT
WAVEFORM
LOCATION
CN171
PIN7
DCLK
2V/div
20ns/div
CN171
PIN 19
V1
1V/div
40µs/div
CN171
PIN 21
V3
1V/div
40µs/div
CN171
PIN 33
FRP
2V/div
40µs/div
13 14 15 16
K
WAVEFORM
J
I
H
G
F
E
D
WF-SG21F
C
B
A
17 18 19