Sony HCD-C990 Service Manual - Page 36

Block, Diagram, Changer, Power Supply

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HCD-C770/C990 7-5. BLOCK DIAGRAM - CHANGER, POWER SUPPLY Section - M761 (STOCKER) M M781 (ROLLER) M M771 M (MODE) STOCKER MOTOR DRIVE IC721 4 OUT1 2 OUT2 FIN 7 RIN 9 ROLLER MOTOR DRIVE IC711 4 OUT1 2 OUT2 FIN 7 RIN 9 MODE MOTOR DRIVE IC701 4 OUT1 2 OUT2 FIN 7 RIN 9 CHANGER CONTROLLER (MOTOR, SWITCH) IC902 20 P4 19 P5 22 P2 21 P3 23 P0 24 P1 S711 (ON: When disc insert) S713 (ON: Play position) S714 ON: Play position (8cm disc only) S715 OFF: When disc out from play position S716 OFF: The moment disc in/out from stocker S717 In the midst disc is moving between play position and stocker, ON: disc is play position side, OFF: disc is stocker side OFF: In the midst disc is moving S718 between play position and stocker S711 (DISC INSERT (8/12cm)) 5 P15 S713 (DISC IN (8/12cm)) S714 (DISC IN (8cm)) 7 P13 S715 (DISC OUT) 8 P12 11 P9 S716 (STOCKER IN/OUT) S717 (DISC POSITION) 9 P11 S718 (STOCKING) 10 P10 12 P8 (Page 34) X DISC IN LEVEL SHIFT Q731 DISC INSERT DETECT SENSOR IC751 ROTARY ENCODER S771 (MODE) ROTARY ENCODER S702 (STOCKER POSITION) OPT-SEN 79 PARA-DATA 72 PARA-CLK 71 PARA-LT1 69 26 DI1 3 CLK 4 LAT 2 RESET DO1 15 DO2 25 CLKO 14 LATCHO 13 PARA-RST 68 PARA-DO2 67 TU-ON 50 SP RELAY 66 STOP 90 RESET 34 SYSTEM CONTROLLER IC901 (3/3) POWER-SW 91 DVD-POWER 89 P-PWM 11 ST-POWER 45 RESET SWITCH Q901 RESET SIGNAL GENERATOR IC907 AND GATE IC905 D812 STANDBY LED DRIVE Q911, 912 CHANGER CONTROLLER (ROTARY ENCODER) IC906 FL FL1 TO FLUORESCENT INDICATOR TUBE VFL DC-DC CONVERTER T801 RECT D806 - 809 OSC Q803, 804 STREAM PROCESSOR +3.3V +3.3V REGULATOR IC303 DSP +2.6V STREAM PROCESSOR +5V +2.6V REGULATOR IC605 DA03V +3.3V REGULATOR IC005 A3.3V +3.3V REGULATOR IC001 A5V, RF+5V DA05V, VIDEO +5V +5V REGULATOR IC002 +5V REGULATOR IC302 +5V REGULATOR IC004 +5V D5V REGULATOR IC003 B+ SWITCH Q003, 004 +32V (AMP +32V) 5-8 P15 - P12 9 - 12 P11 - P8 +6.5V (AMP +6.5V) +6.5V REGULATOR IC903 26 DI1 16 DI2 3 CLK 4 LAT 2 RESET DO2 25 VOLTAGE DETECT IC904 S901 (2/2) POWER U5V S901 (1/2) D/A, A/D +5V 10V TU 10V +5V REGULATOR IC600 D202, 203 B+ SWITCH Q222, 223 M12V POWER ON/OFF CONTROL Q902, 906 +10V REGULATOR IC601 B+ SWITCH Q001, 002 12V +12V REGULATOR IC908 D900 D900 U5V SYSTEM D901 CONTROLLER +5V D917 +5.6V REGULATOR IC905 VOLTAGE DETECT Q992 B+ SWITCH Q990, 991 +2.5V +1.8V +2.5V REGULATOR IC702 +1.8V REGULATOR IC006 D3.3V POWER ON/OFF CONTROL Q910, 911 +3.3V REGULATOR IC906 FAN MOTOR CONTROL Q190, 191 M M301 (FAN) FAN Y (Page 34) S901 (1/2) POWER RECT D911 +6.8V REGULATOR Q904 POWER TRANSFORMER T901 TH901 RECT D902 D919 S901 (2/2) LINE FILTER LF901, 902 D920 (AC IN) D906 +20V REGULATOR Q905 D933 D905, 907 3D 4 VCC 1 OCP/SYNC VCC BUFFER IC909 OSC Q912, 914 SWITCHING IC902 POWER ON/OFF CONTROL Q901, 903 ISOLATOR PC901 D912 5 FB/OLP POWER CONTROL IC901 36 36

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HCD-C770/C990
36
36
7-5.
BLOCK
DIAGRAM
– CHANGER, POWER SUPPLY Section –
3
POWER CONTROL
IC901
D
(AC IN)
S901 (2/2)
FAN
S901 (1/2)
TH901
POWER
TRANSFORMER
T901
M301
(FAN)
D919
D920
D933
D912
VCC
D906
12V
D905, 907
RECT
D902
LINE FILTER
LF901, 902
ISOLATOR
PC901
OSC
Q912, 914
BUFFER
IC909
B+ SWITCH
Q001, 002
RESET SWITCH
Q901
VOLTAGE DETECT
IC904
AND GATE
IC905
4
VCC
1
OCP/SYNC
5
FB/OLP
RECT
D911
POWER
SWITCHING
IC902
+20V
REGULATOR
Q905
POWER ON/OFF
CONTROL
Q901, 903
POWER ON/OFF
CONTROL
Q902, 906
FAN MOTOR
CONTROL
Q190, 191
+6.8V
REGULATOR
Q904
+12V
REGULATOR
IC908
+10V
REGULATOR
IC601
+5V
REGULATOR
IC600
VOLTAGE
DETECT
Q992
+6.5V
REGULATOR
IC903
M12V
D202, 203
U5V
S901 (1/2)
10V
D/A, A/D
+5V
LED DRIVE
Q911, 912
POWER ON/OFF
CONTROL
Q910, 911
B+ SWITCH
Q222, 223
TU 10V
+3.3V
REGULATOR
IC906
B+ SWITCH
Q990, 991
M
+6.5V
(AMP +6.5V)
+32V
(AMP +32V)
B+ SWITCH
Q003, 004
LEVEL SHIFT
Q731
+5V
REGULATOR
IC004
+3.3V
REGULATOR
IC005
D5V
DA05V,
VIDEO +5V
DA03V
+5V
REGULATOR
IC003
+2.6V
REGULATOR
IC605
DSP +2.6V
FL
FL1
VFL
+3.3V
REGULATOR
IC001
A3.3V
+5V
REGULATOR
IC002
A5V, RF+5V
+5V
REGULATOR
IC302
+3.3V
REGULATOR
IC303
STREAM PROCESSOR
+5V
STREAM PROCESSOR
+3.3V
TO FLUORESCENT
INDICATOR TUBE
DC-DC
CONVERTER
T801
D3.3V
+1.8V
REGULATOR
IC006
+2.5V
REGULATOR
IC702
+2.5V
+1.8V
+5.6V
REGULATOR
IC905
SYSTEM
CONTROLLER
+5V
D901
D900
D917
RESET SIGNAL
GENERATOR
IC907
U5V
RECT
D806 – 809
OSC
Q803, 804
D900
66
SP RELAY
50
TU-ON
34
RESET
72
PARA-DATA
67
PARA-DO2
90
STOP
91
POWER-SW
89
DVD-POWER
45
ST-POWER
11
P-PWM
S901 (2/2)
SYSTEM CONTROLLER
IC901 (3/3)
POWER
D812
STANDBY
P4
P5
OPT-SEN
OUT1
FIN
OUT2
RIN
STOCKER MOTOR DRIVE
IC721
CHANGER CONTROLLER
(MOTOR, SWITCH)
IC902
CHANGER CONTROLLER
(ROTARY ENCODER)
IC906
M761
(STOCKER)
M
7
9
4
2
20
19
79
P2
P3
P15 – P12
OUT1
FIN
OUT2
RIN
ROLLER MOTOR DRIVE
IC711
M781
(ROLLER)
M
7
9
4
2
22
21
P0
P1
OUT1
FIN
OUT2
RIN
MODE MOTOR DRIVE
IC701
M771
(MODE)
M
7
9
4
2
23
24
DISC INSERT
DETECT SENSOR
IC751
S711 (DISC INSERT (8/12cm))
S713 (DISC IN (8/12cm))
P15
P13
P12
P9
P11
P10
P8
5
(ON: When disc insert)
(MODE)
7
S714 (DISC IN (8cm))
8
S715 (DISC OUT)
11
S716 (STOCKER IN/OUT)
9
S717 (DISC POSITION)
10
S718 (STOCKING)
S711
S713
S714
S715
S716
S717
S718
12
DI1
26
71
PARA-CLK
CLK
3
69
PARA-LT1
LAT
4
68
PARA-RST
RESET
2
RESET
2
25
DO2
25
DO2
DI2
16
14
CLKO
CLK
3
13
LATCHO
LAT
4
15
DO1
DI1
26
OFF: When disc out from
play position
OFF: The moment disc in/out
from stocker
In the midst disc is moving
between play position and stocker,
ON: disc is play position side,
OFF: disc is stocker side
OFF: In the midst disc is moving
between play position and
stocker
(ON: Play position)
(8cm disc only)
ON: Play position
ROTARY
ENCODER
S771
5 – 8
P11 – P8
(STOCKER POSITION)
ROTARY
ENCODER
S702
9 – 12
DISC IN
X
(Page 34)
Y
(Page 34)