Block Diagram - Bus Control/Power Supply Section - Sony MDX-C7900 Service Manual

5-4. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
RESET SIGNAL
BACKUP +5V GENERATOR
IC801
CNJ600
SONY BUS INTERFACE
BUS CONTROL IN
IC600
(FOR SONY BUS)
2
RST
RESET
RESET 2
SWITCH
5 DATA
DATA 6
4
CLK
CLK 4
BUS ON SWITCH
BUS ON
Q600
6
OUT
BUS ON
BUS ON 1
SWITCH
7
BATT
BATTERY
BATT 3
SWITCH
D604
TH600
D603
BATTERY
BATT B+ DETECT
Q601
05
S900
(RESET) D702
RST
13
DATA IN
9
DATA OUT
8
CLK IN
11
BUS
ON IN
12
BU IN
10
LEVEL SHIFT
Q603
– 27 –
MASTER CONTROLLER
IC700 (3/3)
90 RESET
+5V
(FM/AM PLL (IC100) B+)
+9V
(FOR VT)
RAM RESET
29 SYSRET RAMBU 102 BACKUP +5V
IC802
21 UNI SO S700
(POWER SELECT)
ON (ELECTRICAL VOLUME (IC300) B+)
PW SEL
20 UNI SI 95
OFF
22 UNI CKO
BACKUP +5V
36
BUS-ON
PULLUP +5V
PW ON 109
FM ON 110
76 BU IN
D701
TUN ON
111
LAMP ON (ILL ON) 108
ACC IN 64
LCD +10V
(LCD DRIVER (IC801) B+)
MD MECHANISM CONTROLLER
IC501 (2/2)
PL801, 802
(FOR BACK LIGHT)
60 BU-IN
61 BUS-ON
30 RESET
49 UNISI
48 UNICKI
50 UNISO
46 LINKOFF
MD-ON 65
MDMON 10
ACCESSORY
CHECK
Q900
BATT
(POWER AMP (IC500) B+)
+5V
REGULATOR
Q6
6 ANP+B
+9V
REGULATOR 8 AMT+B
Q2
REGULATOR
IC800
FM B+
11 FM8V
(FM CIRCUIT B+)
AM B+
10 AM8V
(AM CIRCUIT B+)
COM +8V
9 COM8V VCC 7
5
BU+B
D803
(Type B)
4 3 2
+5V
REGULATOR
IC900
(Type A)
+10V
BACK LIGHT
LAMP DRIVE REGULATOR
Q805, 807 Q903, 904
REGULATOR
CONTROL SWITCH
LOAD +12V
Q906
LOADING MOTOR
DRIVER (IC305) B+
+5V
D/A +5V REGULATOR
Q252
REGULATOR
CONTROL SWITCH
Q253
+12V
B+ SWITCH
REGULATOR
Q402, 403
Q254
REGULATOR
CONTROL SWITCH
Q255
DRIVER +5V
MOTOR/COIL DRIVER
(IC303) B+
+3.3V DC/DC B+
+3.3V REGULATOR CONVERTER SWITCH
Q250
IC401, Q401 IC250
Q251
D913
DIMMER
– 28 –
MDX-C7900/C7900R
CNP500 (2/2)
6
ANT REM
AMP REM
5
F1
16
BATT
7
ACC
D (Page 8)