Sony MDX-C8900R, Service Manual

Page: 33 / 88

MDX-C8900R
– 37 – – 38 –
4-5. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
5V
5V
+5V
(MIC AMP CIRCUIT B+)
RESET SIGNAL
GENERATOR
IC505
REMOTE CONTROL
RECEIVER
IC901
SIRCS
BUFFER
Q522
RAM RESET
IC503
BATTERY
DETECT
Q516
ACCESSORY CHECK
Q517
LEVEL SHIFT
Q521
SW701
6
8
4
CLK
ANT+B
FM8V
AMP+B
REGULATOR
IC506
COM8V
AM8V
MODE1 MODE2 STB
CLK IN
DATA OUT
DATA
2
RST
RESET
SWITCH
BUS ON
SWITCH
13
11
1
BUS ON
OUT
BUS
ON IN
12
9
DATA IN
SONY BUS INTERFACE
IC504
MASTER CONTROLLER
IC500 (4/4)
MD MECHANISM CONTROLLER
IC501 (2/2)
BUS ON SWITCH
Q520
BATT
BATT B+
BUS ON
DATA
CLK
RESET
7
6
5
4
2
SIRCS
3
16
BATT
ANT REM
AMP REM
6
5
CN501
BUS CONTROL IN
(FOR SONY BUS)
CNP500 (2/2)
(POWER CONNECTOR)
SW500
(POWER SELECT)
ILLUMINATION
LINE DETECT
Q515
DIMMER
CONTROL SWITCH
Q511, 512, 514
REGULATOR
CONTROL SWITCH
Q505
OSC OFF
SWITCH
Q532
F1
Q101
COM +8V
(AUDIO CIRCUIT B+)
05
RST
3
BATT
BATTERY
SWITCH
10
BU IN
UNISI
50 UNISO
UNICKI
MDMON 10
77
10
19 UNICKIO
17 UNISI
18 UNISO
86 HSTX
11
24 SIRCS
90
65 MD-ON
D502
F500
D538
D524
D526
D523
VCC
EL900
(FOR BACK LIGHT)
T501
INVERTER
AM B+
(AM CIRCUIT B+)
FM B+
(FM CIRCUIT B+)
VCC
7
7
ACC
14
ILL
+9V
REGULATOR
Q3
AMP REMOTE
SWITCH
Q527, 528
+9V
(FOR VT)
+5V
REGULATOR
Q2
+5.6V
REGULATOR
Q524, 525
+10V
REGULATOR
Q506
+5V
REGULATOR
Q901
+10V
REGULATOR
Q502
+12V
REGULATOR
Q102
+3.3V
REGULATOR
IC401, Q401
DC/DC
CONVERTER
IC101
OSC
Q510
+5V
(TUNER CIRCUIT B+)
TUNER B+
B+ SWITCH
Q518, 519
B+ SWITCH
Q507, 508
B+ SWITCH
Q402, 403
B+ SWITCH
Q100
REGULATOR
IC501, Q513
+3.3V
D6
D527, 529, 546
5V
2 3 4
9
10
11
8
6
POWSEL
FM-ON
TU-ON
ILL-ON
81
29
DIMMER 30
DOOR-IND 59
6
7
RESET
SYSRST
RAMBU
BU-IN
BUS-ON
RESET
LINKOFF
BU-IN
BUS-ON
ACC IN
78
ILL IN
48
61
60
30
49
46
B (ON)
A (OFF)
56
55
H (Page 38)
J (Page 36)
LED-ON
I (Page 34)
RESET
DOOR SW
G (Page 34)
STB
5V
MOTOR/COIL DRIVER
(IC303) B+
LOAD +12V
LOADING MOTOR
DRIVER (IC305) B+
LCD +10V
LCD DRIVER (IC900)/
ILLUMINATION LED B+
P-ON +10V
(ILLUMINATION LED B+)
LED702, 703
(FOR ILLUMINATION)
REGULATOR
CONTROL SWITCH
Q501
REGULATOR
CONTROL SWITCH
Q103
BATT B+
POWER AMP
(IC600) B+
RESET