DOWNLOAD Sony STR-DE185 Service Manual ↓ Size: 4.05 MB | Pages: 30 in PDF or view online for FREE

Model
STR-DE185
Pages
30
Size
4.05 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-de185.pdf
Date

Sony STR-DE185 Service Manual ▷ View online

10
STR-DE185
SECTION 4
DIAGRAMS
1 to 7
DIG7 to 1
O
Digit drive signal output to the fluorescent indicator tube (FL201).
8
+5V
Power supply pin (+5 V)
9
CL
O
Serial clock signal output to FM/AM tuner pack.
10
DO
O
Serial data signal output to FM/AM tuner pack.
11
DI
I
Serial data signal input from FM/AM tuner pack.
12
CE
O
Serial chip enable signal output to FM/AM tuner pack.
13
VOL DATA
O
Serial data signal output to sound control IC.
14
VOL CE
O
Serial clock signal output to sound control IC.
15
RDS DATA
I
RDS data signal input from FM/AM tuner pack. (AEP, UK model only)
16
PROTECTOR
I
Overload detection signal input
17
RESET
I
Reset signal input
18
TUNED
I
TUNED indicator detection signal input from FM/AM tuner pack.
19
STEREO
I
STEREO indicator detection signal input from FM/AM tuner pack.
20
AVSS
Analog ground
21
VERSION
I
Destination select signal input (Fixed at H: US model, L: AEP, UK model)
22
FM SIGNAL OUT
I
FM/AM signal meter voltage detection signal input from FM/AM tuner pack.
(AEP, UK model only)
23 to 28
AD6 to 1
I
Function keys signal input
29
AVDD
A/D converter power supply pin (+5 V)
30
AVREF
A/D converter reference voltage input (+5 V)
31
NC
Not used. (Connect to AVREF pin in this set)
32
OPEN
Not used. (Open)
33
GND
Ground
34
X1
I
Master clock input (4.19 MHz)
35
X2
O
Master clock output (4.19 MHz)
36
REC SW1
O
VIDEO 1 ON/OFF signal output
37
REC SW2
O
MD/TAPE ON/OFF signal output
38, 39
VOL A, B
I
Master volume JOG data input A, B
40
FUNC.MUTE
O
Not used. (Fixed at L in this set)
41
CK
O
Serial clock signal output to electoric volume IC.
42
DATA
O
Serial data signal output to electoric volume IC.
43
STB
O
Serial data strobe signal output to electoric volume IC.
44
SYS.POWER
I
System power signal input
45
AC MUTE
O
A-Class mute signal output
46
RDS INT
I
RDS clock signal input from FM/AM tuner pack. (AEP, UK model only)
47
STOP
I
Stop signal input from reset signal generator IC.
48
VSS
Ground
49
SIRCS
I
Sircs signal input from remote control receiver IC.
50
TUNER MUTE
O
Muting control signal output to FM/AM tuner pack.
51
NC
Not used. (Open)
52
+5V
Power supply pin (+5 V)
53
BASS B. LED
O
BASS BOOST LED drive signal output
54
SPK A LED
O
SPEAKERS A LED drive signal output
55
SPK B LED
O
SPEAKERS B LED drive signal output
4-1. IC PIN DESCRIPTION
• IC201  µPD78044FGF-200-3B9 (SYSTEM CONTROLLER, FL DRIVER)
Pin No.
Pin Name
I/O
Pin Description
STR-DE185
11
11
56
RY R1 COIL
O
Power relay (12V) drive signal output
57
RY POWER
O
AC power relay (9V) drive signal output
58
RY A
O
Speakers A relay (12V) drive signal output
59
RY B
O
Speakers B relay (12V) drive signal output
60
RY HP
O
Phones relay (12V) drive signal output
61
NC
Not used. (Open)
62 to 70
S15 to 7
O
Segment drive signal output to the fluorescent indicator tube (FL201).
71
VLOAD
Power supply pin (-24 V)
72 to 77
S6 to 1
O
Segment drive signal output to the fluorescent indicator tube (FL201).
78 to 80
DIG10 to 8
O
Digit drive signal output to the fluorescent indicator tube (FL201).
Pin No.
Pin Name
I/O
Pin Description
4-2. CIRCUIT BOARDS LOCATION
MAIN board
OUTLET board
POWER SW board
HP board
DISPLAY board
STR-DE185
12
12
4-3. BLOCK DIAGRAM — MAIN SECTION —
9
7
5
3
1
14
22
49
71
28
77 - 72,70 - 62
7 - 1,80 - 78
27
26
25
24
44
23
54
17
34
35
15 46
19 18 50 12 10 11 9
13
37
36
45
60
58
59
16
56
57
47
13
5
41 42 43
32
3
1
1
2
4
3
3
IC904
+10V
1
LED
DRIVER
Q204
LED
DRIVER
Q206
55
LED
DRIVER
Q205
KEY MATRIX
FL201
FLUORESCENT
INDICATOR
TUBE
1
REMOTE
CONTROL
RECEIVER
IC202
29
20
3
2
8 9 10
15
14
38
53
39
1
3
TREBLE
L
MIDDLE
L
BASS
L
CONTROL
VOLUME
CONTROL
FM SG OUT
RDS DATA
RDS INT
STEREO
TUNED
MUTE
CE
DI
DO
CL
FM SIGNAL OUT
RDS DATA
RDS INT
STEREO
TUNED
TUNER MUTE 
CE
DO
DI
CL
VOL CL
VOL DATA
CK
DATA
STB
REC SW2
REC SW1
AC MUTE
RY HP
RY A
RY B
PROTECTOR
RY R1 COIL
RY POWER
STOP
AC MUTE
ST-R
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
ST-L
HP RELAY
SPK A RELAY
RESET
SPK B RELAY
PROTECTOR SIG
R1 COIL RELAY
POWER RELAY
STOP SIGNAL
RESET
SWITCH
Q201,202
BASS B.LED
VOL A
VOL B
X1
X2
VLOAD
AD1
AD2
AD3
AD4
AD5
SYS.POWER
AD6
SPK A LED
SPK B LED
DIG1
 I
DIG10
S1
 I 
S15
SIRCS
S201
S202
S203
I
 /  I
SPEAKERS
D205
D206
SPEAKERS
A
B
X201
4.19MHz
D203
RV201
MASTER VOLUME
BASS
BOOST
A
B
S204-239
SYSTEM CONTROLLER,
FL DRIVER
IC201
J801 (1/2)
J802 (1/2)
-1
L
-2
R
IN
CD
-5
L
-6
R
IN
MD/TAPE
J801 (2/2)
VIDEO,MD/TAPE
SELECT
IC404
AUDIO AMP
IC403
SOUND CONTROL
IC401
-3
L
-4
R
OUT
MD/TAPE
J802 (2/2)
-3
L
-4
R
AUDIO OUT VIDEO 1
-1
L
-2
R
AUDIO IN
VIDEO 2
-5
L
-6
R
AUDIO IN
VIDEO 1
FM 75
COAXIAL
AM
ANTENNA
+10V
10V
L CH
R CH
STEREO
TUNED
MUTE
CE
DI
DO
CL
STEREO
TUNED
MUTE
CE
DI
DO
CL
FM SIGNAL
OUT
RDS DATA
RDS INT
FM SG OUT
RDS DATA
RDS INT
3.3V
R CH
+3.3V
REG
-24V
F1 F2
REC L
VOL L
OUT L
TUNER
    L
CD L
MD L
VIDEO 2
L
IN
L
OUT
VIDEO 1
CLK
DATA
CLK
STB
DATA
ELECTRONIC
VOLUME
IC402
Q424
INV.
Q474
INV.
TM301
FM/AM TUNER UNIT
AEP,UK
MODEL
POWER
SECTION
1
• Signal path
            : FM/AM
            : MD/TAPE
            : VIDEO 1
            : CD
            : VIDEO 2
• R-ch is omitted due to
  same as L-ch.
(Page 13)
STR-DE185
13
13
4-4. BLOCK DIAGRAM — POWER SECTION —
6
2
3
DRIVE
POWER AMP
Q701-704
BIAS
MUTE CONTROL
Q680
1
13 14 15
-24V
REG
Q904
+5V REG
IC902
3
1
+10V REG
IC903
3
1
6
7
8
2
5
3
RELAY DRIVER
Q783
RELAY DRIVER
Q903
RELAY DRIVER
Q901
+5.6V
REG
Q902
RELAY DRIVER
Q782
RELAY DRIVER
Q781
+B
-B
-24V
+5V
+10V
+5.6V
OUT C
V+
RESET
VSA
VSC
RESET/+5.6V REG
IC901
VSB/SESIN
F2
F2
RY982
F901
F902
RY981
RY781
R-CH
RY782
RY783
RECT
D901-904
RECT
D908-911
RECT
D907
T901
POWER
TRANSFORMER
T902
POWER
TRANSFORMER
D905
D906
CNJ901
AC
OUTLET
SWITCHED 120W/1A MAX
AC 120V 60 Hz 
(US)
SWITCHED 100W MAX
(AEP,UK)
AC IN
+B
-B
+B
MUTE
VCC1
VCC2
VEE
PRE DRIVER
IC601
PRE
DRIVE
IN 1
+VOUT
-VOUT
OVERLOAD
DET
Q705,706
PROTECT
SWITCH
Q784-786
R-CH
J803
PHONES
TM801
SPEAKERS
IMPEDANCE
USE 8-16
L
R
A
L
R
B
R-CH
R-CH
ST-L
ST-R
INV.
Q681
AC MUTE
HP RELAY
SPK A RELAY
SPK B RELAY
PROTECTOR SIG
R1 COIL RELAY
POWER RELAY
STOP SIGNAL
R-CH
MAIN
SECTION
1
D786
D787
D789
• Signal path
            : FM/AM
• R-ch is omitted due to
  same as L-ch.
(Page 12)
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