Block Diagram - Display/Power Supply Section - Sony STR-KM22 Service Manual

STR-KM22/KM55/KM77
5-4. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
POWER
TRANSFORMER
(MAIN)
T901
~ AC IN
120V
S901
VOLTAGE
220V
SELECTOR
240V
RY901
F902 F901
E51, EA
POWER
TRANSFORMER
(SUB)
T903
POWER
TRANSFORMER
(SUB)
T904
STR-KM22/KM55/KM77
+5V REG
IC1602
1 IN OUT 3
+12V REG
RECTIFIER
IC900
D1002
F921
1 IN OUT 3
F922
+3.3V REG
IC2010
6 VCC VO 1
+4V REG
4 EN
IC1600
2 VIN PH 8
BOOT 1
+6V REG
IC1500
2 VIN PH 8
BOOT 1
+12V REG
IC1603
1 IN OUT 3 F101
RECTIFIER -7V REG
D910 ~ D913 IC352
F911
2 IN OUT 3
F910
1 IN OUT 3
+7V REG
IC350
RECTIFIER
D921
F914
F915
RELAY DRIVER
Q920
RY920
RY931
RELAY DRIVER
Q931
F931
F932
RECTIFIER
D932
RELAY DRIVER
Q903
EXCEPT E51, EA
AC OFF DETECT
D960
Q904
+3.3V
STBY SUPPLY
+3.3V REG
Q2709
RECTIFIER
IC1601
D902 ~ D905
2 VIN PH 8
BOOT 1
E51, EA
KM55, KM77
M M
M1 M2
(FAN) (FAN)
CN903 3 2 1 2 1 CN904
D1603
FAN DRIVER
Q900 ~ Q902
VACUUM FLUORESCENT
DISPLAY
+3.3V (AUDIO)
ND101
+3.3V REG
15 VDD
IC103
+4V 17 K2
4 VDD VOUT 3 21 K1
1 F+
2 F+
53 F-
+6V
54 F-
SWITCHING
TRANSISTOR 10 SW
Q101
D102, D103 8 VH
-7V
12 VIN
+13V
+7V
+B
-B
KM55, KM77
+B
+3.3V (AUDIO)
-B
+3.3V (VMCU)
+3.3V (STBY)
18 18
SYSTEM CONTROL
IC2106
(4/4)
LED DRIVER
37 FAN _CTRL INPUT_LED 30
Q112
42 FAN _BLK
LED DRIVER
VOL_LED 31
Q111
LED DRIVER
LED_BAR 32
Q110
CLK 29 43 FL_CLK
3
DIN 27 44 FL_DATA
REMOTE CONTROL
STB 31 45 FL_LAT
SIGNAL RECEIVER
IC102
SIRCS_IN 53 1 VO
INPUT_JOG 52
41 FUSE_DET VOLUME_JOG 54
11 BRIDGEABLE_RY POWER_DET 56
D2306
(2/2)
18 PROTECT
AD_KEY1 57
TH252
70 TEMP_SENSOR_1
TH251
69 TEMP_SENSOR_2
AD_KEY2 55
TH253
66 TEMP_SENSOR_3
40 POWER_RY
39 STOP
24 LOT26_PCONT
INPUT LED
D110 ~ D115
VOLUME LED
D139, D141, D142
D144, D146, D147
BAR LED
D130, D132, D133
D135, D136, D138
EN100
INPUT
SELECTOR
EN101
MASTER
VOLUME
S100
"/1
S101 S102
SPEAKER MUSIC/
SETTINGS MOVIE
S103 S104 S105
M-TURBO GAME FOOTBALL