Sony STR-DB790 Service Manual

STR-DA1000ES/DB790
2424
6-6. BLOCK DIAGRAM – POWER SUPPLY Section –
+5V
REGULATOR
Q824
+5V
+10V
REGULATOR
IC1902
TUNER +10V
+3.3V
REGULATOR
IC1905
TUNER +3.3V
+5V
REGULATOR
IC1403
A+5V
+5V
REGULATOR
IC952
V+5V
+3.3V
REGULATOR
IC1903
+3.3V/+2.5V
REGULATOR
IC1901
+3.3V
D+3.3V
+3.3V
REGULATOR
IC1904
RECT
D54 – 57
D52
D53
T2
SUB POWER
TRANSFORMER
SYSTEM CONTROLLER
IC1601 (6/6)
AC POWER
DETECT
Q54
–5V
REGULATOR
IC951
V–5V
F1
F2
FLUORESCENT
INDICATOR TUBE
(FL1603)
–28V
BIAS
B–
BIAS
B+
– 15V
+15V
+15V
REGULATOR
IC955
-2
-1
8Ω
4Ω
IMPEDANCE
SELECTOR
S901
T901
MAIN POWER
TRANSFORMER
24D-POWER
47LIMITTER
26V-POWER
77RSTX
48STOP
66POWER RELAY
B+ SWITCH
Q956, 957
STBY +3.3V
RESET SIGNAL
GENERATOR
IC1602
+5V
REGULATOR
IC953
RECT
D908
F904
F903
RECT
D914
F1
RELAY
DRIVE
Q51
RY1
(AC IN)
(DB790: TW)
(DA1000ES/DB790: SP, MY)
(DA1000ES/DB790: SP, MY, TW)
AC OUTLET
CNJ1
B+ SWITCH
Q958, 959
(DB790: AEP, UK)
(DB790)
F2
• Abbrivation
MY : Malaysia model
SP : Singapore model
TW : Taiwan model
D909
B– SWITCH
Q953 – 955
B+ SWITCH
Q52, 53, 55
+2.5V
D+5V
–28V
REGULATOR
Q903
RECT
D912, 913,
915, 916
LIMITER SWITCH
Q2601, 2603
THERMAL DETECT
Q960 – 962
THP901
LIMITER SWITCH
Q2602
B–
+24V (RY)
B+
– 15V
REGULATOR
IC954
RECT
D903 – 906
Ver 1.3
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Sony STR-DB790 Specifications

General

Dimensions (WxDxH)	430 x 401 x 161 mm
Power requirements	230 V, 50/60 Hz
Supported radio bands	FM, MW
Radio Data System (RDS)	Yes
I/O ports	5.1 Analogue Input - 1.0 Audio Input - 3.0 Audio Input Front - 1 AV, S-Video Audio Output - 1.0 Control A1 / A1 II Digital Input: coaxial - 1.0 Digital Input: optical - 4.0 Digital Output: optical - 1.0 Headphone Output Monitor Output (Picture): FBAS - 1.0 Monitor Output (Picture): S-Video - 1.0 Phono Input Speaker Selector A S-Video Input - 4.0 S-Video Output - 1.0 Video Input - 5.0 Video Output - 2.0
Connectivity technology	Wired
Power consumption (standby)	0.5 W
Power consumption (typical)	290 W

Weight and Dimensions

Weight	12500 g