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MDX-C7970/C7970R
4-5.
BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
CNJ600
BUS CONTROL IN
(FOR SONY BUS)
3
SIRCS
2
RESET
5
DATA
4
CLK
BUS ON SWITCH
Q600
6
BUS ON
7
BATT
TH600
BATT B+
MUTE
J
(Page 28)
AMP ON
H
(Page 28)
05
REMOTE CONTROL
RECEIVER
IC502
D605
SIRCS BUFFER
Q602
BACKUP +5V
RESET SIGNAL
BACKUP +5V
GENERATOR
IC801
D916
S900
(RESET)
SONY BUS INTERFACE
IC600
RST
RST
RESET
2
13
SWITCH
DATA
DATA IN
6
9
DATA OUT
8
CLK
CLK IN
4
11
BUS ON
BUS
OUT
ON IN
BUS ON
1
12
SWITCH
BATT
BU IN
BATTERY
3
10
SWITCH
D604
D606
D603
BATTERY
DETECT
Q601
D607
LEVEL SHIFT
Q603
– 31 –
MASTER CONTROLLER
IC700 (4/4)
24 SIRCS
RAM RESET
102
RAMBU
IC802
90
RESET
(TUNER CIRCUIT B+)
86 HSTX
D702
TUNER B+
29
SYSRST
21 UNI SO
20 UNI SI
22 UNI CKIO
36
BUS-ON
PW-ON 109
FM-ON
110
76
BU-IN
TU-ON
111
108
LAMP ON (ILL ON)
ACC IN
64
ILL IN
57
PACK-IND
25
MD MECHANISM CONTROLLER
IC501 (2/2)
60
BU-IN
MD-ON
65
61
BUS-ON
MDMON 10
30
RESET
49
UNISI
48
UNICKIO
50 UNISO
46
LINKOFF
+5V
+5V
REGULATOR
Q6
6
AMP+B
8
ANT+B
D3
REGULATOR
IC800
FM B+
11
FM8V
VCC 7
(FM CIRCUIT B+)
AM B+
10
AM8V
(AM CIRCUIT B+)
COM +8V
9
COM8V
(AUDIO CIRCUIT B+)
D802
BACKUP +5V
5
BU+B
4
3
2
LCD +10V
LCD DRIVER (IC501)/
ILLUMINATION LED B+
REGULATOR
CONTROL SWITCH
Q906
ACCESSORY CHECK
Q900
LED891
(MD DISC SLOT)
LED891,
LSW890
LSW890
6
REGULATOR
CONTROL SWITCH
Q907
LOAD +12V
LOADING MOTOR
DRIVER (IC305) B+
B+ SWITCH
Q402, 403
REGULATOR
CONTROL SWITCH
Q255
DRIVER +5V
MOTOR/COIL DRIVER
(IC303) B+
+3.3V
DC/DC
+3.3V
REGULATOR
CONVERTER
IC401, Q401
IC250
– 32 –
STB
I
(Page 28)
CNP500 (2/2)
(POWER CONNECTOR)
D804
6
ANT REM
D803
AMP REM
5
BATT B+
POWER AMP
(IC500) B+
+10V
F1
16
REGULATOR
BATT
Q903, 904
D913
7
ACC
D500
14
ILL IN
REGULATOR
Q908
+12V
REGULATOR
Q254
B+ SWITCH
Q250, 251
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