Sony STR-DB840 / STR-DB940 Service Manual ▷ View online
5
SECTION 1
GENERAL
FRONT PANEL PARTS DESCRIPTION
1
2
3
4
5
5
0
1
3
9
7
4
6
2
8
10
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
PHONES
SPEAKERS
A
OFF
A
+
B
B
MASTER VOLUME
DIMMER
DISPLAY
VIDEO 3 INPUT
R
L
VIDEO
S-VIDEO
AUDIO
FM MODE
–
BASS BOOST
MEMORY
MULTI CHANNEL DECODING
+
–
•
•
•
•
ENTER
DOOR OPEN
FUNCTION
MUTING
–
+
C
2 CH
ANLG DIRECT
5.1CH INPUT
FM / AM
PRESET
TUNING
TUNING
CINEMA STUDIO EX.
MODE
–
+
SHIFT
A
B
A.F.D.
INPUT
MODE
SET UP
NAME
LEVEL
EQ
+
EQUALIZER
SUR
MODE
?
/
1
5
0
1
3
9
7
4
6
2
8
10
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
PHONES
SPEAKERS
A
OFF
A
+
B
B
MASTER VOLUME
DIMMER
DISPLAY
VIDEO 3 INPUT
R
L
VIDEO
S-VIDEO
AUDIO
FM MODE
–
BASS BOOST
MEMORY
MULTI CHANNEL DECODING
+
–
•
•
•
•
ENTER
DOOR OPEN
FUNCTION
MUTING
–
+
C
2 CH
ANLG DIRECT
5.1CH INPUT
FM / AM
PRESET
TUNING
TUNING
CINEMA STUDIO EX.
MODE
–
+
SHIFT
A
B
A.F.D.
INPUT
MODE
SET UP
NAME
LEVEL
EQ
+
EQUALIZER
SUR
MODE
?
/
1
6
qf
qg
7
8
9
q;
qa
qs qd
qh
qj
qk
ql
w;
wa
ws
wd
wf
wg
wh
wj
1 I/1 switch
2 MASTER VOLUME control
3 MUTING button
6 DIMMER button
7 DISPLAY button
8 FM/AM button
SHIFT button
PRESET TUNING +/– buttons
9 CINEMA STUDIO EX. A~C buttons
q; MULTI CHANNEL DECODING
indicator
qa A.F.D. button/indicator
2CH button/indicator
MODE +/– buttons/indicator
qs ANLG DIRECT button
qd 5.1CH INPUT button
qf DOOR OPEN button
qg ENTER button
qh Cursor buttons (</>)
qj Jog dial
qk LEVEL button
ql EQ button
w; SUR button
wa SET UP button
ws NAME button
wd EQUALIZER button
wf TUNING/PTY SELECT +/– buttons
(AEP and UK models)
TUNING +/– buttons
(Except AEP and UK models)
4 FUNCTION control
MODE button
5 INPUT MODE button
wg RDS EON button
(AEP and UK models)
RDS PTY button
(AEP and UK models)
TEST TONE button
(Except AEP and UK models)
SLEEP button
(Except AEP and UK models)
wh MEMORY button
FM MODE button
wj SPEAKERS selector
PHONES jack
6
BACK PANEL PARTS DESCRIPTION
1
2
3
4
8
q;
qa
qs
qd
qf
qg
qh
qj
qk
7
5
ql
9
6
4
Ω
8
Ω
B
A
R
L
R
L
–
IN
L
R
L
R
OUT
SIGNAL
GND
COAXIAL
AM
U
U
ANTENNA
TAPE
IMPEDANCE
SELECTOR
IN
PHONO
IN
CD
REAR
FRONT
CENTER
MONITOR
IN
OUT
MD/DAT
AUDIO
IN
IN
VIDEO
CTRL S
OUT
OUT
VIDEO
CTRL S
OUT
CTRL S
STATUS IN
CTRL S
IN
AUDIO
OUT
VIDEO 1
AUDIO
IN
TV/SAT
AUDIO
IN
DVD/LD
AUDIO
IN
AUDIO
OUT
VIDEO 2
FM
75
Ω
AC OUTLET
FRONT
DVD/LD
OPTICAL
IN
DVD/LD
COAXIAL
IN
TV/SAT
OPTICAL
IN
MD/DAT
OPTICAL
IN
MD/DAT
OPTICAL
OUT
DIGITAL
L
R
REAR
FRONT
CENTER
SUB
WOOFER
5.1CH INPUT
VIDEO
S-VIDEO
IN
VIDEO
S-VIDEO
IN
2ND AUDIO OUT
CONTROL A1
VIDEO
S-VIDEO
IN
VIDEO
S-VIDEO
OUT
VIDEO
S-VIDEO
OUT
SPEAKERS IMPEDANCE USE 4 – 16
Ω
R
L
+
L
R
PRE OUT
REAR
SUB WOOFER CENTER
1 ANTENNA terminal
2 5.1CH INPUT jack
3 DIGITAL jack
4 SPEAKERS terminal
5 PRE OUT jack
6 IMPEDANCE SELECTOR switch
7 AC OUTLET connector
8 AC power cord
9 CONTROL A1II jack
q; 2ND AUDIO OUT jack (STR-DB940)
qa VIDEO 1 jack
qs VIDEO 2 jack
qd DVD/LD jack
qf TV/SAT jack
qg TAPE jack (STR-DB940)
qh MD/DAT jack (STR-DB940)
MD/TAPE jack (STR-DB840)
qj CD jack
qk PHONO jack
ql MONITOR jack
7
CASE
5.1 IN BOARD, AU SW BOARD, TUNER
Note:
Follow the disassembly procedure in the numerical order given.
SECTION 2
DISASSEMBLY
1
two screws
(flat head)
(flat head)
1
two screws
(flat head)
(flat head)
3
case ass'y
2
2
1
two screws
(flat head)
(flat head)
1
two screws
(flat head)
(flat head)
3
four screws
(BV3
(BV3
×
8)
1
wire (flat type) (15 core)
(CN1)
(CN1)
4
tuner
(TM301)
(TM301)
5
5.1 IN board,
AU SW board
AU SW board
2
connector
(CNP10)
(CNP10)
8
VIDEO/OSD/JOINT (1) (Q)/JOINT (2) (Q)/S-VIDEO/
DIGITAL BOARDS
DIGITAL BOARDS
HEAT SINK
1
wire (flat type) (15 core)
(CN51)
(CN51)
5
bracket (digital)
1
wire (flat type) (21 core)
(CN55)
(CN55)
4
DIGITAL board
8
VIDEO board (DB840)/OSD board (DB940),
JOINT (1) (Q) board (DB840)/
JOINT (2) (Q) board (DB940)
S-VIDEO board
JOINT (1) (Q) board (DB840)/
JOINT (2) (Q) board (DB940)
S-VIDEO board
3
two screws
(BVTP3
(BVTP3
×
8)
2
three screws
(BV3
(BV3
×
8)
7
seven screws
(BV3
(BV3
×
8)
6
connector
(CNS213)
(CNS213)
1
five connectors
(CNP511, 611, 561, 711, 761)
(CNP511, 611, 561, 711, 761)
3
two screws
(BVTP3
(BVTP3
×
6)
4
two screws
(BVTP3
(BVTP3
×
8)
4
two screws
(BVTP3
(BVTP3
×
8)
2
ten screws
5
heat sink
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