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Model
STR-DA80ES TA-V88ES TA-VA80ES
Pages
53
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890.89 KB
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PDF
Document
Service Manual
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Device
Audio
File
str-da80es-ta-v88es-ta-va80es.pdf
Date

Sony STR-DA80ES / TA-V88ES / TA-VA80ES Service Manual ▷ View online

– 9 –
DC  BIAS  CURRENT  Adjustment
(with no signal input)
Note:
1.
DC BIAS CURRENT adjustments should be made 30 seconds after
the POWER switch is turned on (POWER ON).
2.
After replacing the power transistors, DC BIAS CURRENT adjustments
should be perfomed.
Procedure:
Digital volt meter
+
1
2
3
R615
R665
R016
R715
R765
AMP BOARD
[AMP  BOARD] (COMPONENT SIDE)
R665
RV651
1
2
3
D973
D971
D972
C987
C988
C985
C986
1
2
3
R668
R765
RV751
R017
R768
RV001
R016
R715
RV701
R718
R615
RV601
R618
3
2
1
3
2
1
1
2
3
FRONT Rch
REAR Rch
FRONT Lch
REAR Lch
CENTER 
Connecting
Adjustment
Reading on
point
part
Digital volt meter
FRONT Lch
R615
RV601
20 mV
FRONT Rch
R665
RV651
20 mV
CENTER
R016
RV001
20 mV
REAR Lch
R715
RV701
20 mV
REAR Rch
R765
RV751
20 mV
SECTION  3
ELECTRICAL  ADJUSTMENTS
– 10 –
1
MBUS (VZ)
I
Not used (fixed at “L”)
2
MBUS (MON)
I
Not used (fixed at “L”)
3
MBUS (STU)
O
Not used (open)
4
LED-V3
O
LED drive signal output terminal
“H”: LED on
(for function VIDEO 3 indicator)
5
LED-V2
O
LED drive signal output terminal
“H”: LED on
(for function VIDEO 2 indicator)
6
LED-V1
O
LED drive signal output terminal
“H”: LED on
(for function VIDEO 1 indicator)
7
STANDBY
O
LED drive signal output terminal
“H”: LED on
(for function STANDBY indicator)
8
DPC (SURR)
O
LED drive signal output terminal
“H”: LED on
(for function SUR indicator)
9
DPC (EQ)
O
LED drive signal output terminal
“H”: LED on
(for function EQ indicator)
10
DPC (INDEX)
O
LED drive signal output terminal
“H”: LED on
(for function INDEX indicator)
11
DVSS
Ground terminal
12
LED-CE
O
LED drive signal output terminal
    
“H”: LED on
(for function CD indicator)
13
LED-DAT/MD
O
LED drive signal output terminal
“H”: LED on
(for function DAT/MD indicator)
14
LED-TAPE
O
LED drive signal output terminal
“H”: LED on
(for function TAPE indicator)
15
LED-TV
O
LED drive signal output terminal
“H”: LED on
 (for function TV/DBS (STR-DA80ES) or TV (TA-V88ES/VA80ES) indicator)
16
LED-LD
O
LED drive signal output terminal
“H”: LED on
(for function LD/DVD indicator)
17
LED-V3
O
LED drive signal output terminal
“H”: LED on
(for function VIDEO 3 indicator)
18
LED-V2
O
LED drive signal output terminal
“H”: LED on
(for function VIDEO 2 indicator)
19
LED-V1
O
LED drive signal output terminal
“H”: LED on
(for function VIDEO 1 indicator)
20
RX (SIN)
I
Receive data input from the on screen display controller
Not used (fixed at “L”)
21
TX (SOUT)
O
Transmit data output to the on screen display controller
Not used (open)
22
BUSY
I
Busy signal input from the on screen display controller
Not used (fixed at “L”)
23
FL CLEAR
O
“Display clear signal output to the fluorescent indicator tube driver (IC101, 102)”
24
FL DATA
O
Serial data output to the fluorescent indicator tube driver (IC102)
25
FL CLK
O
“Serial data transfer clock signal output to the fluorescent indicator tube driver (IC101, 102)”
26
LAT (OSD)
O
“Serial data latch pulse signal output to the fluorescent indicator tube driver (IC101, 102)”
27
SIRCS1
I
Sircs signal input from the remote control receiver (IC104)
28
AVCC
Power supply terminal (+5V)
29
AVR+
I
Reference voltage input terminal (+5V)
30
AVR–
I
Reference voltage input terminal (+0V)
31
GND
Ground terminal
32
AD KEY IN 1
I
Key input terminal (A/D input)
S132 to 134 (INPUT MODE, DIRECT PASS, BASS BOOST keys)
Key input terminal (A/D input)
33
AD KEY IN 2
I
S116 to 119 (FM/AM, SHIFT, PRESET TUNING +/– keys) (STR-DA80ES).
Not used (open) (TA-V88ES/VA80ES)
34
DVSS
Ground terminal
Key input terminal (A/D input)
35
AD KEY IN 3
I
S109 to 114 (STR-DA80ES: EQUALIZER BAND, TUNING +/–, FM MODE, MEMORY,
DISPLAY keys) (TA-V88ES/VA80ES: EQUALIZER BAND, EQUALIZER ON/OFF, SOUND FIELD
STANDARD, SLEEP, DIMMER)
36
AD KEY IN 4
I
Key input terminal (A/D input)
S101 to 108 (EQUALIZER CH, DPC MODE, cursor 
/
/
/
, SET UP, OPEN/CLOSE keys)
37
AD KEY IN 5
I
Key input terminal (A/D input)
S129 to 131 (MODE, SOUND FIELD ON/OFF, GENRE keys)
38
AD VERSION
I
Setting terminal for the destination (A/D input)
39
VOL-UP
I
Motor drive signal input for the master volume
40
VOL-DOWN
I
Motor drive signal input for the master volume
DISPLAY  BOARD  IC105  MB90673PF-G-206-BND
(FLUORESCENT  INDICATOR  TUBE  DRIVE  CONTROLLER,  KEY  CONTROL)
Pin No.
Pin Name
I/O
Function
SECTION 4
DIAGRAMS
4-1.
IC Pin  Function Description
– 11 –
Pin No.
Pin Name
I/O
Function
41
MODE0
I
Mode selection terminal (fixed at “H”)
42
MODE1
I
Mode selection terminal (fixed at “H”)
43
MODE2
I
Mode selection terminal (fixed at “L”)
44
STANDBY
I
Hardware standby signal input terminal (fixed at “H”)
45
STOP
I
Stop signal input terminal
46
U-RESET
I
System reset signal input from the master controller (IC3413)    “L”: reset
47
U-SREQ
O
Communication request signal output to the master controller (IC3413)
48
U-MREQ
I
Communication request signal input from the master controller (IC3413)
49
U-DATA
I/O
Serial data in/out with the master controller (IC3413)
50
U-CLOCK
I
Serial data reading clock signal input from the master controller (IC3413)
51
HIFI/ES
I
Setting terminal for the destination (fixed at “H”)
52
AUBUS-IN
I
Audio bus signal input terminal
53
AUBUS-OUT
O
Audio bus signal output terminal
54
FUNCTION-B
I
Jog dial pulse input of the rotary encoder (RV101 FUNCTION)
55
FUNCTION-A
I
Jog dial pulse input of the rotary encoder (RV101 FUNCTION)
56
OUT-OPEN
O
Motor drive signal output to the door open/close motor drive (IC107)
57
OUT-CLOSE
O
Motor drive signal output to the door open/close motor drive (IC107)
58
SW-OPEN
I
Door open detect sensor (PH102) input terminal
59
SW-CLOSE
I
Door close detect sensor (PH103) input terminal
60
Not used (open)
61
SWBAL
I
Balance volume on/off detect signal input terminal
62
RESET
I
Reset signal input terminal    “L”: reset
63
GND
Ground terminal
64
XO
O
System clock signal output terminal (4MHz)
65
XI
I
System clock signal input terminal (4MHz)
66
VCC
Power supply terminal (+5V)
67
LED-TUNER
O
LED drive signal output terminal
“H”: LED on
(for function TUNER indicator)
68
LED-PHONO
O
LED drive signal output terminal
“H”: LED on
(for function PHONO indicator)
69
LED MUTE
O
LED drive signal output terminal
“H”: LED on
(for MUTING indicator)
70
LED-LEARNING
O
LED drive signal output terminal
“H”: LED on
Not used (open)
71
LED D.PASS
O
LED drive signal output terminal
“H”: LED on
(for DIRECT PASS indicator)
72
LED-INPUT
O
LED drive signal output terminal
“H”: LED on
Not used (open)
73
LED VOL
O
LED drive signal output terminal
“H”: LED on
(for MASTER VOLUME illumination)
74
LED BASS.B
O
LED drive signal output terminal
“H”: LED on    (for BASS BOOST indicator)
75
SP-A
I
Speaker select switch (S135) input terminal
“H”: speaker A on
76
SP-B
I
Speaker select switch (S135) input terminal
“H”: speaker B on
77
PW-SW
I
Power switch (S137) input terminal
78
LED-TV
O
LED drive signal output terminal
“H”: LED on
(for function TV/DBS (STR-DA80ES) or
TV (TA-V88ES/VA80ES) indicator)
79
LED-LD
O
LED drive signal output terminal
“H”: LED on
(for function LD/DVD indicator)
80
I
Not used (fixed at “L”)
– 12 –
   DIGITAL BOARD  IC3308  SN-PM4007A (DOLBY (AC-3) DEMODULATOR)
Pin No.
Pin Name
I/O
Function
1
GND
Ground terminal
2
VDD
Power supply terminal (+5V)
3
RESET
I
Reset signal input from the master controller (IC3413)    “L”: reset
4
OSCON
I
Oscillation on/off control signal input terminal    “H”: on (fixed at “H”)
5
DATA
I
Test terminal    Not used (fixed at “L”)
6
MCK
I
Test terminal    Not used (fixed at “L”)
7
MLTB
I
Test terminal    Not used (fixed at “L”)
8
IDST
O
Test terminal    Not used (open)
9
IDCK
O
Test terminal    Not used (open)
10
IDO
O
Test terminal    Not used (open)
11
TM0
I
Test terminal    Not used (fixed at “L”)
12
ECCK
O
Test terminal    Not used (open)
13
DEY
O
Test terminal    Not used (open)
14
DRY
O
Test terminal    Not used (open)
15
DRY
O
Test terminal    Not used (open)
16
TM1
I
Test terminal    Not used (fixed at “L”)
17
A0
O
18
A1
O
19
A2
O
20
A3
O
21
A4
O
22
A5
O
23
TM2
I
Test terminal    Not used (fixed at “L”)
24
TM3
I
Test terminal    Not used (fixed at “L”)
25
XOUT
O
System clock output terminal    Not used (open)
26
XIN
I
System clock input terminal    Not used (fixed at “L”)
27
NEXT
I
Test terminal    Not used (fixed at “L”)
28
GND
Ground terminal
29
VDD
Power supply terminal (+5V)
30
A6
O
Address signal output to the S-RAM (IC3309)
31
A7
O
Address signal output to the S-RAM (IC3309)
32
GND
Ground terminal
33
VDD
Power supply terminal (+5V)
34
A12
O
Address signal output to the S-RAM (IC3309)
35
A14
O
Address signal output to the S-RAM (IC3309)
36
WE
O
Write enable signal output to the S-RAM (IC3309)    “L” active
37
A13
O
38
A8
O
Address signal output to the S-RAM (IC3309)
39
A9
O
40
GND
Ground terminal
41
A11
O
Address signal output to the S-RAM (IC3309)
42
OE
O
Output enable signal output to the S-RAM (IC3309)    “L” active
43
A10
O
Address signal output to the S-RAM (IC3309)
44
D7
I/O
45
D6
I/O
Address signal output to the S-RAM (IC3309)
Two-way data bus with the S-RAM (IC3309)
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