Read Sony HT-K25 / TA-VE25 Service Manual online
TA-VE25
AEP Model
UK Model
E Model
SERVICE MANUAL
HOME THEATER SYSTEM
• This set is the Amplifier section in
HT-K25.
SPECIFICATIONS
This system incorporates Dolby* Digital and Pro
Logic Surround and the DTS** Digital Surround
System.
* Manufactured under license from Dolby
Logic Surround and the DTS** Digital Surround
System.
* Manufactured under license from Dolby
Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are
trademarks of Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are
trademarks of Dolby Laboratories.
** “DTS” and “DTS Digital Surround” are registered
trademarks of Digital Theater Systems, Inc.
General
Power requirements
Dimensions (w/h/d)
Control center
Control center
196
× 60 × 269 mm
including projecting parts
and controls
and controls
Mass (Approx.)
Control center
Control center
1.1 kg
Power voltage is DC 12V, 5.6V and fed with sub
woofer (SA-WMS25) from external CONTROL jack.
woofer (SA-WMS25) from external CONTROL jack.
Inputs (Digital)
AUX (Coaxial)
AUX (Coaxial)
Impedance: 75 ohms
S/N: 90 dB
(A, 20 kHz LPF)
S/N: 90 dB
(A, 20 kHz LPF)
DVD, SAT (Optical)
S/N: 90 dB
(A, 20 kHz LPF)
(A, 20 kHz LPF)
Inputs (Analog)
TV, VIDEO
TV, VIDEO
Sensitivity: 700 mV
Impedance: 50 kohms
S/N: 84 dB
(A, 20 kHz LPF)
Impedance: 50 kohms
S/N: 84 dB
(A, 20 kHz LPF)
Amplifier section
Ver 1.0 2002. 09
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Published by Sony Engineering Corporation
9-874-148-01
2002I1600-1
© 2002.09
2
TA-VE25
1. GENERAL
········································································· 3
2. TEST MODE
····································································· 5
3. DIAGRAMS
········································································ 7
3-1. Printed Wiring Board – Main Section – ·························· 8
3-2. Schematic Diagram – Main Section – ···························· 9
3-3. Printed Wiring Board – Control Section – ···················· 10
3-4. Schematic Diagram – Control Section – ······················· 11
3-5. Printed Wiring Board – Display Section – ···················· 12
3-6. Schematic Diagram – Display Section – ······················ 13
3-7. IC Pin Function Description ········································· 14
3-8. IC Block Diagrams ······················································· 15
3-2. Schematic Diagram – Main Section – ···························· 9
3-3. Printed Wiring Board – Control Section – ···················· 10
3-4. Schematic Diagram – Control Section – ······················· 11
3-5. Printed Wiring Board – Display Section – ···················· 12
3-6. Schematic Diagram – Display Section – ······················ 13
3-7. IC Pin Function Description ········································· 14
3-8. IC Block Diagrams ······················································· 15
4. EXPLODED VIEWS
····················································· 16
5. ELECTRICAL PARTS LIST
····································· 18
[When bringing in the equipment for service]
When bringing the system in for repairs, be sure to bring in the
entire system (control center (TA-VE25) and subwoofer (SA-
WMS25) This product is system product, and the entire system is
needed to determine the location requiring repair.
entire system (control center (TA-VE25) and subwoofer (SA-
WMS25) This product is system product, and the entire system is
needed to determine the location requiring repair.
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40
• Unleaded solder melts at a temperature about 40
°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
TABLE OF CONTENTS
3
TA-VE25
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Control center
ALPHABETICAL ORDER
AUX 5 (15)
AUX indicator qg
Display 6 (16)
DVD 1 (15)
DVD indicator qd
MASTER VOLUME 8 (14, 15)
MUTING 9 (15)
MUTING indicator qk
;PLII 7
Remote sensor qaql
SAT 3 (15)
SAT indicator qf
SOUND FIELD q; (18, 19)
TV 4 (15)
TV indicator qj
VIDEO 2 (15)
VIDEO indicator qh
AUX indicator qg
Display 6 (16)
DVD 1 (15)
DVD indicator qd
MASTER VOLUME 8 (14, 15)
MUTING 9 (15)
MUTING indicator qk
;PLII 7
Remote sensor qaql
SAT 3 (15)
SAT indicator qf
SOUND FIELD q; (18, 19)
TV 4 (15)
TV indicator qj
VIDEO 2 (15)
VIDEO indicator qh
?/1 (power) qs
NUMBERS AND SYMBOLS
qs
1
2
3
4
5
6
8
7
qa
9
0
INPUT
–DVD–
–SAT–
–AUX–
–VIDEO–
–TV–
MUTING
qd
qf
qg
qh
qj
qk
ql
4
TA-VE25
Remote control
ALPHABETICAL ORDER
A – N
?/1 (power) 1
V/v/B/b ej
V/v/B/b ej
M 8
m qk
> ql
. el
N qj
X qh
x 9
-/-- ea
0/10 el
>10/11 ql
0/10 el
>10/11 ql
NUMBERS AND SYMBOLS
AAC BI-LING rf
ALT e; (20)
ANGLE rs
ANT qk
AUDIO rd
AUTO DEC wg
AUX wa (15)
AV ?/1 (power) 2
AV MENU es
CLEAR 8
D.TUNING wh
DISC ea
DISPLAY eh
DVD wd (15)
ENTER/12 7
FM MODE rg
JUMP wl
MAIN MENU ef (24, 26)
MASTER VOL +/– qa (14, 15)
MEMORY ql
MUTING q; (15)
Numeric buttons w;
ALT e; (20)
ANGLE rs
ANT qk
AUDIO rd
AUTO DEC wg
AUX wa (15)
AV ?/1 (power) 2
AV MENU es
CLEAR 8
D.TUNING wh
DISC ea
DISPLAY eh
DVD wd (15)
ENTER/12 7
FM MODE rg
JUMP wl
MAIN MENU ef (24, 26)
MASTER VOL +/– qa (14, 15)
MEMORY ql
MUTING q; (15)
Numeric buttons w;
;PL/PLII rh (20)
PRESET/CH/D.SKIP +/– 6
RETURN O/EXIT ed
SAT 4 (15)
SEARCH MODE ea
SHIFT 7
SLEEP 1 (20)
SOUND FIELD +/– wj (18, 19)
SUBTITLE wk
SWAP r;
TEST TONE eg (14)
TIME ra
TOP MENU/GUIDE ek
TUNER 5
TUNING + 8
TUNING – qk
TV 3 (15)
TV CH +/– qf
TV VOL +/– qg
TV/VIDEO qs
TV ?/1 (power) wf
VIDEO ws (15)
WIDE qd
PRESET/CH/D.SKIP +/– 6
RETURN O/EXIT ed
SAT 4 (15)
SEARCH MODE ea
SHIFT 7
SLEEP 1 (20)
SOUND FIELD +/– wj (18, 19)
SUBTITLE wk
SWAP r;
TEST TONE eg (14)
TIME ra
TOP MENU/GUIDE ek
TUNER 5
TUNING + 8
TUNING – qk
TV 3 (15)
TV CH +/– qf
TV VOL +/– qg
TV/VIDEO qs
TV ?/1 (power) wf
VIDEO ws (15)
WIDE qd
P – W
N
X
m
M
.
>
-
VIDEO
DVD
SYSTEM STANDBY SLEEP
TV
?/1
AV
?/1
SAT
TV
AUX
TUNER
;
PL/PLII AUTO DEC
–
TOP MENU/
GUIDE
AV MENU
MUTING
MASTER
VOL
DISPLAY
TV VOL
TV CH
WIDE
TEST TONE
TV/
VIDEO
MAIN
MENU
RETURN/EXIT
+
TUNING
DISC
ALT
ANT
CLEAR SEARCH MODE
AAC
BI-LING
FM MODE
1
2
3
4
5
6
7
8
9
0/10
>10/11 ENTER/12
D.TUNING
MEMORY
SHIFT
SOUND
FIELD
TIME
SWAP
JUMP
PRESET/
CH/D.SKIP
AUDIO
ANGLE
SUBTITLE
x
?/1
O
f
F
G
g
AV SYSTEM3
RM-U25
N
X
m
M
.
>
-
VIDEO
DVD
SYSTEM STANDBY SLEEP
TV
?/1
AV
?/1
SAT
TV
AUX
TUNER
;
PL/PLII AUTO DEC
–
TOP MENU/
GUIDE
AV MENU
MUTING
MASTER
VOL
DISPLAY
TV VOL
TV CH
WIDE
TEST TONE
TV/
VIDEO
MAIN
MENU
RETURN/EXIT
+
TUNING
DISC
ALT
ANT
CLEAR SEARCH MODE
AAC
BI-LING
FM MODE
1
2
3
4
5
6
7
8
9
0/10
>10/11 ENTER/12
D.TUNING
MEMORY
SHIFT
SOUND
FIELD
TIME
SWAP
JUMP
PRESET/
CH/D.SKIP
AUDIO
ANGLE
SUBTITLE
x
?/1
O
f
F
G
g
AV SYSTEM3
RM-U25
1
wf
wd
2
5
wg
wj
e;
ef
eg
es
6
9
0
qa
3
4
7
qs
qd
8
wk
ea
ed
w;
ql
ws
wa
rh
rf
ek
ej
eh
ra
qk
qj
qg
rd
rs
qh
qf
rg
wh
wl
r;
el