Read Sony HT-K5 / STR-K5 Service Manual online
12
12
STR-K5
STR-K5
4-5. BLOCK DIAGRAM – AUDIO OUT, POWER SUPPLY Section –
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.
same as L-ch.
8
12
11
DRIVE
POWER AMP
Q501-504
CURRENT
DETECT
Q505,506
RY501
RY601
PRE DRIVER
IC501
IN 2
+VOUT2
-VOUT2
R
L
FRONT
L
SURROUND
AUDIO
OUT
SUB
WOOFER
CENTER
R
R-CH
R-CH
L-CH
R-CH
SL-CH
C-CH
R-CH
SR-CH
R-CH
C
RY901
D802
F1
F2
-20V
+3.3V
(STBY)
+1.8V
+5V
-7V
+7V
TU+10V
-20V
RECT
D910-913
D914
D915
(SUB)
D1001
D1110
D1107
D1111
OVERLOAD
DETECT
D502,Q507
8
61
12
11
DRIVE
POWER AMP
Q701-704
CURRENT
DETECT
Q705,706
-20V REGULATOR
Q801
B-SWITCH
Q851,852
RELAY
DRIVER
Q901
AC IN
DETECT
Q911
PRE DRIVER
IC701
IN 2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D702,Q707
8
12
11
DRIVE
POWER AMP
Q601-604
CURRENT
DETECT
Q605,606
PRE DRIVER
IC601
IN 2
+VOUT2
-VOUT2
OVERLOAD
DETECT
D602,Q607
RELAY
DRIVER
Q508
RELAY
DRIVER
Q608
RY701
RY702
RELAY
DRIVER
Q560
69
PROTECTOR
D882,883
Q881-883
Q881-883
58
48
70
+5.6V
(STBY)
OVERLOAD
DETECT AMP
7
2
IC850
–40V
-B
+3.3V/+1.8V
REGULATOR
4
5
+3.3V
2
IC1901
+A5V
+5V
REGULATOR
1
3
IC1001
+3.3V
REGULATOR
1
3
IC1904
+9V
REGULATOR
1
3
IC1902
-16V
+16V
+7V
REGULATOR
3
1
IC821
-7V
REGULATOR
2
3
IC822
+5V
REGULATOR
1
3
IC1031
+B
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
RECT
D811
D811
RECT
D920-923
RECT
D804-807
T901
POWER
TRANSFORMER
TM601
TM600 (1/2)
TM600 (2/2)
J403
(MAIN)
FRONT RY
SURR RY
C/SW RY
SURR RY
FRONT RY
C/SW RY
FRONT RY
PROTECTOR
POWER RY
71
SURROUND RY
STOP
C/SW RELAY
SYSTEM
CONTROLLER
IC1101 (5/5)
PRE
DRIVE
PRE
DRIVE
SB-CH
-40V +BV
-40V +BV
-40V +BV
PRE
DRIVE
R810
R812
R910
T902
POWER
TRANSFORMER
(AC IN
~
)
F901
SPEAKERS
RELAY
DRIVER
Q708
(Chilean and Peruvian models)
(Singapore and Malaysia models)
VOLTAGE
SELECTOR
S901
(Page 8)
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