Block Diagram - Display/Power Section - Sony STR-DH550 Service Manual

STR-DH550/DH750
5-6. BLOCK DIAGRAM – DISPLAY/POWER Section –
VACUUM FLOURESCENT
DISPLAY
ND101
27 29 31
REMOTE CONTROL
SIGNAL RECEVER
IC100
ROTARY
MASTER
ENCODER
VOLUME
EN101
ROTARY
INPUT
ENCODER
SELECTOR
EN100
S115
S108 ~ S110,
S111 ~ S114
S101 ~ S105
X2001
4MHz
STR-DH550/DH750
F1
F2
45 FL_LAT
43 FL_CLK
44 FL_DATA
SYSTEM CONTROL
IC2001 (6/6)
53 SIRC-IN
54 VOLUME_JOG
+6V (DCDC)
52 INPUT_JOG
F1
F2
FL-EN 42
PUREDIRECT
58
56 POWER DET
LED-ON 36
LED-STBY 37
55 AD_KEY1
+2V (DCDC)
+1.2V
57 AD_KEY2
+1.2V
48 X0
49 X1
PWR-RLY 4
STOP 66
>007B
BRIDGEABLE RELAY
AMP SECTION
(Page 17)
+HV
(VCC)
TO
AUDIO AMP
-HV
SECTION
(VCC)
+3.3V REG.
+3.3V +5V
IC102
+5V
+5V REG. +5V REG.
+5V
IC3518 IC3519
+7V
+5V REG.
+5V
IC3513
-7V
+5V REG.
+5V
IC3511
+6V REG.
IC1905
SWITCHING
DC CONVERTER SWITCHING
TRANSISTOR
TRANSFORMER TRANSISTOR
CONTROL
T100 Q101
Q103 ~ Q104
LED
LED DRIVER
(PURE DIRECT)
Q102
D108
LED DRIVER
Q110 LED
(ON/STBY)
LED DRIVER
D110
Q111
+2V REG.
IC1907
+1.2V REG. +3.3V REG.
+3.3V (DCDC)
IC3517 IC1906
+1.2V REG.
IC2402
STBY +3.3V
STBY +3.3V
20 20
RELAY DRIVER
Q920
RY920
RECT
D921
F912
F913
+5V REG.
IC2300
+5V REG.
IC2000 RECT
D910-913
F910
+7V REG.
IC350
F911
-7V REG.
IC352
TRANSFORMER
RECT
D923
F940
+12V
F941
RELAY DRIVER
Q951
RECT
DH750
D901 ~ D904
+3.3V REG. (STBY)
IC902
TRANSFORMER
+3.3V REG. (STBY)
IC901
DH550
D905
AC OFF DETECT
Q952
POWER
(MAIN)
T901
BR
F902
VOLTAGE
SELECTOR
S901
F901
RY951
POWER
(SUB)
T902
AC IN