Sony STR-DA80ES / TA-V88ES / TA-VA80ES Service Manual ▷ View online
– 7 –
Note: Follow the disassembly procedure in the numerical order given.
CASE
SECTION 2
DISASSEMBLY
REAR PANEL SECTION
1
two screws
(M 3
×
8)
3
case
1
three screws
(M 3
×
8)
1
three screws
(M 3
×
8)
1
two screws
(M 3
×
8)
2
2
1
connector
(CNE910)
1
connector
(CNV903)
1
connector
(CNV902)
3
two screws
(BVTP 3
×
6)
4
back panel section
2
seven screws
(BVTP 3
×
8)
1
connector
(CNE807)
2
two screws
(BVTP 3
×
8)
(STR-DA80ES)
2
eight screws
(BVTP 3
×
8)
2
seven screws
(BVTP 3
×
8)
1
connector
(CND3503)
2
four screws
(BVTP 3
×
8)
2
screw
(BVTP 3
×
8)
– 8 –
TUNER/AUDIO/SPTM BOARD, FRONT PANEL SECTION
INPUT BOARD
1
connector
(CNV613)
2
five screws
(BVTP 3
×
8)
1
connector
(CNE939)
2
two screws
(BVTP 3
×
8)
4
INPUT board
3
claw
1
five connectors
(
CNE601, 620, 622, 3501,
)
CNP202
1
five connectors
(
CND621, CNE601, 602,
)
CNV615, 616
1
connector
(CNE211)
1
connector
(CNS210)
1
connector
(CNS623)
7
four screws
(BVTP 3
×
8)
8
front panel section
2
SPTM board
5
connector
(CNS201)
6
TUNER board
7
three screws
(BVTP 3
×
8)
4
flat wire
(CNS3503)
3
AUDIO board
STR-DA80ES
– 9 –
DC BIAS CURRENT Adjustment
(with no signal input)
(with no signal input)
Note:
1.
1.
DC BIAS CURRENT adjustments should be made 30 seconds after
the POWER switch is turned on (POWER ON).
the POWER switch is turned on (POWER ON).
2.
After replacing the power transistors, DC BIAS CURRENT adjustments
should be perfomed.
should be perfomed.
Procedure:
Digital volt meter
+
–
1
2
3
R615
R665
R016
R715
R765
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)
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)
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)
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
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)
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)
(FLUORESCENT INDICATOR TUBE DRIVE CONTROLLER, KEY CONTROL)
Pin No.
Pin Name
I/O
Function
SECTION 4
DIAGRAMS
4-1.
IC Pin Function Description
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