Display/Power Section - Sony MDS-JB940 Service Manual

MDS-JB940
6-2. BLOCK DIAGRAM

DISPLAY/POWER Section

P DOWN
A
MAIN
SECTION
+5V
5
J801 6
KEYBOARD 4 3
1
2
BUFFER
Q3,4
BUFFER
Q1,2
Q5
J321
CONTROL
A1 II
Q321
S701-706
FUCTION
KEY
S711,712
S714,716,717
FUCTION
KEY
S721-725
FUCTION
KEY
S731-733
FUCTION
KEY
S713
ROTARY
ENCODER
RV760
VOLUME
S751
TIMER
IC761
+3.3V
REMOTE
2 CONTROL 1
RECEIVER
DISPLAY CONTROL
IC1(2/2)
FL DRIVER
IC771
36
IIC CLK
67 RESET 3
37
DATA(FL) 1 70 DA
.
CLK(FL) 2 69 79
CP SEG01
.
37 IIC DATA
CS(FL) 128 68 CS 80
SEG39
.
1
.
116 KEYBOARD DATA
2
COM01 39
60
28 KEYBOARD CLK COM22
COM23 61
114 KEYBOARD CLK CTRL
COM24 62
3 XIN 22
A1 IN
X1
POWER 73
10MHz
31
A1 OUT
XOUT 20 FILTER 74
SF EDIT 75
CLOCK OUT 18 MD LONG 72
X2
141
KEY0
32.768kHz
CLOCK IN 17 VFL1 63
139 KEY1 122
D0 119
.
D15 131
FLASH ROM
102
IC2
138 KEY2
. 29 . 30
100 25
31 32
. .
94 . 18 .
33 34
. .
137 KEY3 92 8
.
A1 A0 DQ0 35 36
. .
85 1
.
38 39
A19 A18 DQ15
. .
77 48
. .
40 41
. .
123 JOG0 75 17
. .
42 43
. .
124 73 16
JOG1
44 45
WE R/W 65 11 WE
118 REC VOL A WP 90 14
WP
REC VOL B
117 CS0 69 26 CE
OE 63 28 OE
136 TIMER
S RESET 19
STB 131
4 SIRCS
FL781
FLOURESCENT
INDICATOR TUBE
D/A +5V
PANEL +5V
AC AC
AD/DA +3V
OPT +3V
SYS +3.3V
D402
B-UP +3.3V
BT701
LITHIUM ION
GRID BUFF
BATTERY
Q781,782
Q756-759
D756-759
LED
DRIVER
FL-32V
32 32
REGULATOR
IC400
13 P DOWN
5 PH5V
D904-907
VCC2 7
+3V REG
4
ANA5V
Q405
8 SYS3.3V D903
D401 AC 2
D403
+3.3V REG
Q904
VCC1 6
10 SRST
RELAY
DRIVE
Q901
LOADING
D910
TRANSFORMER
MOTOR +B
IC902
+5V
MDM +5V 2
1
REG
D911
HEAD +5V 4
MOTOR +5V
D918-921
-32V REG
FL -32V
Q902
AC
AC
D404-407
IC401
+7V
+7V 1
3
REG
IC203
+5V
D/A +5V 2 1
REG
4
IC601
+5V
A/D +5V
2 1
REG
4
IC402
-7V
-7V 1 2
REG
LF901
TR900
LINE AC
FILTER IN
D902
RY901
T901
POWER