Sony HCD-BX77DBI Service Manual ▷ View online
HCD-BX77DBi
HCD-BX77DBi
33
33
5-18. SCHEMATIC DIAGRAM - PANEL Section -
• See page 22 for Waveforms. • See page 36 for IC Block Diagrams.
CN802
R856
R855
R854
R853
R868
R863
R862
R861
R860
R864
R865
R866
R867
R869
R857
D915
R925
R921
C804
Q905
R942
R943
IC902
C815
C917
C918
C919
C920
C814
C816
R935
R936
R937
R938
R944
R934
C924
C910
D807
R932
R933
R931
C909
C908
D905
D904
C811
C812
L901
R930
R919
C907
Q903
R920
C805
FB901
R929
Q901
T801
S801
S803
R851
R852
S807
S806
S805
S804
S820
S818
S815
S816
S817
S819
S821
S811
S812
S813
S814
S810
S809
FL901
R922
D902
IC901
C841
4P
15k
10k
4.7k
2.2k
10k
4.7k
2.2k
2.2k
1k
1k
2.2k
2.2k
4.7k
10k
15k
MC2838
470
47
1
2SC3052F
10k
22k
PT6302
22
50V
0.001
100p
100p
100p
22
50V
47p
1k
0
0
0
1k
2.2k
100p
0.01
UDZW-TE17-
6.2B
100
100
10k
47
50V
0.01
MC2838
MC2836
0.01
0.01
2.2k
0
0.022
CPH5504-TL-E
0
47
25V
2.2
RT1P441C
1k
2.2k
47
SLR325VCT31P
NJL24H400A
0.1
54
55
53
52
53
54
55
52
1G
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P1
1
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
P37
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P1
1
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
P37
2G
3G
4G
5G
6G
7G
8G
9G
10G
11
G
1G
2G
3G
4G
5G
6G
7G
8G
9G
10G
11
G
KEY1 RETURN
KEY2
KEY3
DGND
+3.3V
GND
OUT
SIRCS
EVER 3.3V
KEY1
KEY1 RETURN
DGND
FL RESET
+9V
FL DATA
FL GND
4V
FLUORESCENT INDICATOR TUBE
INDICATOR TUBE
FLUORESCENT
LED
DRIVE
STANDBY
REMOTE CONTROL
RECEIVER
GRID DRIVE
DC/DC
CONVERTER
OSC
-1
-2
FL CS
FL CLOCK
STBY LED
DAB
AUTOSCAN
VOL
-
VOL
TUNE -
TUNE +
ENTER
REPEAT/
FM MODE
PLAY
TUNING
MODE
MODE/
DSGX
CANCEL
FUNCTION
-
CD
AUDIO IN
BAND
TUNER/
+
+
2
3
4
6
5
1
9
7
8
DRIVER
(CHASSIS)
1
13
iPod
(Page
28)
(Page 28)
HCD-BX77DBi
HCD-BX77DBi
34
34
C911
D907
D908
C905
R911
R910
R909
C902
R904
R906
C901
D922
R908
D906
D923
R905
R902
R901
D920
C906
C923
C922
JW924
JW925
JW923
JW931
JW932
JW911
D924
JW910
JW914
JW929
FH903
JW909
C921
FH904
JW926
C914
JW927
C936
FH901
FH902
C925
D912
F901
T902
LF901
RY901
D916
D918
CN904
D925
T901
D927
JW920
D926
F902
D914
D911
D913
CN901
D917
D919
WIRE900
1-876-054-
12
(12)
POWER BOARD
MAIN POWER
TRANSFORMER
SUB POWER
TRANSFORMER
NOT REPLACEABLE:
BUILT IN TRANSFORMER
BUILT IN TRANSFORMER
(AC IN)
1
3
K
A
A
K
K
A
K
A
A
K
A
A
LINE FILTER
J
MAIN BOARD
CN303
1
12
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
9
10
11
(CHASSIS)
(Page 26)
5-19. PRINTED WIRING BOARD - POWER Board -
•
: Uses unleaded solder.
• See page 19 for Circuit Boards Location.
HCD-BX77DBi
HCD-BX77DBi
35
35
5-20. SCHEMATIC DIAGRAM - POWER Board -
R910
R911
R908
R904
R905
R909
D923
D922
C914
R906
C921
D908
D907
C922
C923
F901
C901
C905
C906
C902
D917
D916
D919
D918
D920
R902
R901
D911
D912
C936
D913
D914
CN901
RY901
D906
CN904
D927
D924
D925
D926
C925
JW924
JW925
JW926
JW931
JW927
LF901
F902
JW929
JW932
JW923
T902
T901
0
0
1k
4.7k
4.7k
1k
MC2838
MA2J1110GLS0
10
50V
10k
1000
16V
MC2838
MC2836
2200
35V
2200
35V
T2AL 250V
0.1
0.1
0.1
0.1
1N5401
1N5401
1N5401
1N5401
MC2838
22k
22k
1N4002B
1N4002B
2200
25V
1N4002B
1N4002B
3P
MA2J1110GLS0
12P
1N4002-B5
1N4002-B5
1N4002-B5
1N4002-B5
2200
16V
T2AL 250V
USB UNREG GND
USB UNREG
RELAY
SUB GND
UNREG SUB
ACDET
PROTECT
+B
GND
-B
UNREG
UNREG GND
TRANSFORMER
SUB
TRANSFORMER
MAIN
LINE FILTER
(AC IN)
NOT REPLACEABLE:
BUILD IN TRANSFORMER
(Page 29)
HCD-BX77DBi
HCD-BX77DBi
36
36
• IC Block Diagrams
– CD Board –
IC201 TK63115SCL-G@GT
THERMAL &
OVER CURRENT
PROTECTION
VOLTAGE
REFERENCE
ON/OFF
CONTROL
VIN 1
GND 2
VCONT 3
NC
4
VOUT
5
+
–
IC401 BA5826HFP-E2
1
2
3
4
5
6
7
8
9
10
11
12
13
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
REGULATOR
REGULATOR
BIAS TRAP
LEVEL
SHIFT
MUTE
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VO3(+)
VO3(–)
VO4(–)
VO4(+)
RESETt
OPIN
VO1(–)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VO2(–)
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULA
TOR
VCC
VCC
– DAB Board –
IC801 TK11133CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
IC802 TK68112AS2G0L-C
1
VIN
2
GND
3
VCONT
REFERENCE
VOLTAGE
ON/OFF
CONTROL
THERMAL & OVER
CURRENT PROTECTION
VOUT
5
NC
4
+
–
– IP Board –
IC102 TK11133CSCL-G
– MAIN Board –
IC201 R5523N001B-TR-F
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
1
EN
2
GND
3
FLG
4 IN
5 OUT
GATE
CONTROL
UVLO
THERMAL
SHUTDOWN
CURRENT
LIMIT
FLAG
DELAY
IC304 BD3499FV-E2
1
A1
18 BCB1
17 BCA1
16 BCA2
17 BCA1
16 BCA2
20 SB2
19 OUT2
22 SB1
21 SR
21 SR
24 VCC
23 OUT1
26 SDA
25 SCL
25 SCL
28 FIL
27 GND
27 GND
15 BCB2
2
A2
3
B1
5
C1
6
C2
4
B2
11
VOL1
12
VOL2
13
TC2
14
TC1
7
D1
8
D2
9
SEL2
10
SEL1
INPUT
SELECTOR
TREBLE/
BASS
INVERTER
VOLUME
INPUT
GAIN
SURROUND
PC BUS
LOGIC
IC311 BA6956AN
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC312 MC14052BDTR2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
2Y0
1Y2
VCC
1Y1
1-COM
1Y0
1Y3
A
B
GND
GND
INH
2Y1
2Y3
2-COM
2Y2
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