Sony SRS-DB500 Service Manual ▷ View online
SRS-DB500
5
2-3. REAR PANEL BLOCK
Note: Work after laying the set sideways.
5
4 Raise the rear panel block a little by little
from bottom to top of the set.
eight bosses
bottom side
2 Insert a flat-head screwdriver into a recess
in the bottom of the set
to raise the rear panel block a little.
6 rear panel block
1 four screws
(3.5
u 14)
3 Insert the jig (Part No. J-2501-238-A) into
a space made by inserting the screwdriver,
and raise the front panel block gradually.
3 Insert the jig (Part No. J-2501-238-A) into
a space made by inserting the screwdriver,
and raise the front panel block gradually.
SRS-DB500
6
2-4. MAIN BOARD
Note: This illustration sees the front panel block from rear side.
2-5. REAR CHASSIS BLOCK
Note: This illustration sees the set from rear side.
1 eight screws
(BVTP3
u 8)
7 five screws
(BVTP3
u 8)
8 wire (flat type) (11 core)
(CN001)
9 flat type wire (31 core)
(with sheet) (CN004)
0 MAIN board
2 center panel
3 packing sheet (D)
4 JACK board block
5 VOL knob
6 nut
1 screw
(BVTP3
u 10)
3 power cord connector
(CN901)
4 rear chassis block
1 screw
(BVTP3
u 10)
2 five screws
(BVTT3
u 6)
2 seven screws
(BVTT3
u 6)
SRS-DB500
SRS-DB500
7
7
SECTION 3
TEST MODE
COLD RESET
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn on the system.
2. Keeps pressing the [
?/1
] and [INPUT] buttons (about three
seconds).
3. All LEDs are blink and turn off the system.
VERSION DISPLAY MODE
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn on the system.
2. Press the [TREBLE], [INPUT] and [
?/1
] buttons simultane-
ously.
3. Entering the version display mode “TREBLE”, “BASS” and
“INPUT” LEDs are blink.
4. Press the [TREBLE] button to “TREBLE” LED is lighting
and other LEDs are blink. Volume LEDs display fi rmware fi rst
digit (x).
digit (x).
Press the [BASS] button to “BASS” LED is lighting and other
LEDs are blink. Volume LEDs display fi rmware second digit
(y).
LEDs are blink. Volume LEDs display fi rmware second digit
(y).
Press the [INPUT] button to “INPUT” LED is lighting and
other LEDs are blink. Volume LEDs display fi rmware third
digit (z).
other LEDs are blink. Volume LEDs display fi rmware third
digit (z).
Version:
x.y.z
Volume LEDs representation example:
Firmware digit represent “4”
Firmware digit represent “0”
5. To release from this mode, press the [BASS] and [INPUT] but-
tons simultaneously.
2-6. AMP BOARD
Note: This illustration sees the set from rear side.
2-7. POWER BOARD
Note: This illustration sees the set from rear side.
6 two connectors
(CN904,
CN906)
5 connector
(CN553)
4 connector
0 AMP board
8 heat sink (A)
3 flat type wire (31 core)
(CN501)
9 four screws
(BVTT3
u 6)
7 three screws
(BVTT3
u 8)
1 INPUT board
(CN102)
2 TERMINAL board
(CN592)
(AEP, UK, SP, AR, AUS, CH)
1 two connectors
(CN904,
CN906)
2 six screws
(BVTT3
u 6)
2 screw
(BVTT3
u 6)
2 screw
(BVTT3
u 6)
3 clamp
3 clamp
4 fuse (H.B.C.) (T5AL/250V) (AEP, UK, SP, AR, AUS, CH) (F901)
fuse (H.B.C.) (T6.3AL/250V) (US, CND, E92, MX, TW) (F901)
5 fuse label
6 POWER board
Note: When the complete AMP board is replaced, spread the compound referring to
“NOTE OF REPLACING THE IC501 AND IC551 ON THE AMP BOARD AND
THE COMPLETE AMP BOARD” on servicing notes (page 3).
THE COMPLETE AMP BOARD” on servicing notes (page 3).
• Abbreviation
AR :
AR :
Argentina
model
AUS :
Australian
model
CH
: Chinese model
CND : Canadian model
E92
E92
: Brazilian, Colombian and
Venezuelan models
MX
: Mexican model
SP
: Singapore model
TW :
Taiwan
model
Ver. 1.3
SRS-DB500
SRS-DB500
8
8
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM - AUDIO Section -
R-CH
R-CH
15
DA
TA
16
CLOCK
17
LA
TCH
3
6
IN3A
2 IN2A
7 VOL1A
SELOUTA
AUDIO_DA
TA
46
AUDIO_CLK
45
AUDIO_LA
TCH
47
12
OUTA
AUDIO PROCESSOR,
INPUT SELECTOR
IC101
SYSTEM CONTROLLER
IC001 (1/3)
: AUDIO
SIGNAL PATH
R-ch is omitted due to same as L-ch.
R
L
J101
INPUT 1
J102
INPUT 2
R-CH
HEADPHONE AMP
IC601
R-CH
J601
i
Q606
SWITCHING
MUTING
Q603
MUTING
CONTROL
Q601, 602
VOLUME
DETECT
IC102
+
R-CH
LOW-PASS
FILTER
IC251
A
B
WF
LOW-PASS
FILTER
IC201
SP_L
SP_R
BASS FEEDBACK
DETECT
IC252, Q251
C
SW+
POWER_METER
48
HP_MUTE
20
HP_PLUG_IN_DET
19
(Page 9)
(Page 9)
(Page 9)
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