Sony STR-DA1000ES / STR-DB790 (serv.man2) Service Manual ▷ View online
SERVICE MANUAL
Ver. 1.5 2006.11
9-877-370-81
STR-DA1000ES/DB790
US Model
Canadian Model
STR-DA1000ES
AEP Model
UK Model
E Model
Australian Model
Chinese Model
STR-DB790
SUPPLEMENT-1
File this supplement with the service manual.
In this set, MAIN board has been changed in the midway of production.
Moreover, specified value for bias adjustment has been changed at the same
time as changing MAIN board.
Only new MAIN board and bias adjustment corresponding to new MAIN board
have been described.
Refer to original service manual for other information.
Moreover, specified value for bias adjustment has been changed at the same
time as changing MAIN board.
Only new MAIN board and bias adjustment corresponding to new MAIN board
have been described.
Refer to original service manual for other information.
Subject: Change of MAIN board (Suffix-15)
Change of specified value for bias adjustment according
to change in MAIN board
to change in MAIN board
1.
NEW/FORMER DISCRIMINATION
– MAIN Board (Component Side) –
Position of silk
Perform after confirming which type set of the repair referring to the following.
Printed on Silk
Remark
Former type
1-688-629-11, -12
Refer to original service manual
New type
1-688-629-13, -14, -15
Refer to service manual supplement-1
Note 1:
In original service manual, only suffix-11 has been described.
Note 2:
In service manual supplement-1, only suffix-15 has been described.
2
STR-DA1000ES/DB790
2.
ELECTRICAL ADJUSTMENT
BIAS ADJUSTMENT
Condition:
input signal: no signal (no load)
volume:
volume:
minimum
Connection
Procedure:
1. Connect a digital voltmeter to the CN432 (CN482, CN532,
CN582, CN632, CN682) on the MAIN board or CN732 on
the SBL board (STR-DA1000ES only).
the SBL board (STR-DA1000ES only).
2. Press the
I
/1
button to turn on the main power.
3. Adjust the RV431 (RV481, RV531, RV581, RV631, RV681)
on the MAIN board or RV731 on the SBL board (STR-
DA1000ES only) so that the digital voltmeter reading is 8
DA1000ES only) so that the digital voltmeter reading is 8
±
2
mV.
Note:
When the adjusting voltage is higher than 8
±
2 mV, adjust the voltage
to the minimum voltage.
Adjustment and Connection Loacation:
+
–
–
digital voltmeter
CN432 (CN482, 532, 582, 632, 682, 732) pin
1
CN432 (CN482, 532, 582, 632, 682, 732) pin
2
RV734
– SBL BOARD (Component Side) –
CN732
1
2
– MAIN BOARD (Component Side) –
RV431
CN432
2 1
RV481
RV631
RV681
RV531
RV581
CN482
CN632
CN682
CN532
CN582
2 1
2 1
2 1
2 1
2 1
3
STR-DA1000ES/DB790
3.
DIAGRAMS
•
Note for Printed Wiring Boards and Schematic Diagrams
•
Indication of transistor
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
•
All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
2
: nonflammable resistor.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
•
Voltages are dc with respect to ground under no-signal
conditions.
no mark : TUNER
conditions.
no mark : TUNER
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
•
Signal path.
F
: TUNER
J
: AUDIO (ANALOG)
E
: VIDEO
•
Abbreviation
AUS
AUS
: Australian model
CH
: Chinese model
KR
: Korean model
MY
: Malaysia model
SP
: Singapore model
TW
: Taiwan model
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
B
These are omitted.
C
E
Q
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
4
STR-DA1000ES/DB790
•
Semiconductor Location
– MAIN Board –
Ref. No. Location
Ref. No. Location
D411
C-9
D431
I-10
D461
C-9
D481
I-9
D511
D-9
D531
I-3
D561
C-9
D581
H-2
D611
B-10
D631
I-7
D661
B-9
D681
I-5
D711
B-10
D731
G-10
D805
F-10
D807
F-9
D808
F-10
D810
D-6
D812
D-2
D814
E-9
D815
F-2
D816
D-2
D817
F-9
D818
E-2
D819
D-2
D820
D-2
D821
B-9
D822
B-9
D823
B-9
IC401
E-8
IC402
E-7
IC501
F-4
Ref. No. Location
IC502
F-3
IC601
F-8
IC602
F-7
IC651
F-6
IC652
F-5
IC804
D-4
IC805
D-3
Q401
C-4
Q402
J-11
Q403
J-12
Q431
J-11
Q432
I-10
Q433
I-10
Q434
I-11
Q451
C-4
Q452
J-9
Q453
J-10
Q481
J-9
Q482
I-8
Q483
I-9
Q484
I-9
Q501
B-4
Q502
J-4
Q503
J-5
Q531
J-4
Q532
I-3
Q533
I-4
Q534
I-4
Q551
B-4
Q552
J-2
Q553
J-3
Q581
J-2
Q582
H-2
Q583
H-2
Q584
I-2
Q601
C-4
Q602
J-7
Q603
J-8
Q631
J-8
Q632
I-6
Q633
I-7
Q634
I-8
Q651
B-4
Q652
J-5
Q653
J-6
Q681
J-6
Q682
I-5
Q683
I-5
Q684
I-6
Q701
B-5
Q732
G-11
Q751
C-4
Q802
F-9
Q803
F-10
Q805
F-10
Q807
D-8
Q808
B-8
Q809
B-8
Q810
E-3
Q811
B-12
Q813
E-2
Q822
B-9
Q823
D-8
Q824
F-2
Q826
D-6
