DOWNLOAD Sony HT-K25 / TA-VE25 Service Manual ↓ Size: 4.84 MB | Pages: 21 in PDF or view online for FREE

AEP Model

UK Model

E Model

• This set is the Amplifier section in

HT-K25.

This system incorporates Dolby* Digital and Pro
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.

** “DTS” and “DTS Digital Surround” are registered

trademarks of Digital Theater Systems, Inc.

Dimensions (w/h/d)
Control center

196 

× 60 × 269 mm

including projecting parts
and controls

Mass (Approx.)
Control center

1.1 kg

Power voltage is DC 12V, 5.6V and fed with sub
woofer (SA-WMS25) from external CONTROL jack.

Inputs (Digital)
AUX (Coaxial)

Impedance: 75 ohms
S/N: 90 dB
(A, 20 kHz LPF)

DVD, SAT (Optical)

S/N: 90 dB
(A, 20 kHz LPF)

Inputs (Analog)
TV, VIDEO

Sensitivity: 700 mV
Impedance: 50 kohms
S/N: 84 dB
(A, 20 kHz LPF)

2002I1600-1

© 2002.09

2

········································································· 3

····································································· 5

········································································ 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

····················································· 16

····································· 18

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.

Unleaded solder has the following characteristics.
• 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

°C.

Caution: The printed pattern (copper foil) may peel away if the
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.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

• 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.

3

This section is extracted
from instruction manual.

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

?/1 (power) qs

qs

1

2

3

4

5

6

8

7

qa

9

0

–DVD–

–SAT–

–AUX–

–VIDEO–

–TV–

MUTING

qd

qf

qg

qh

qj

qk

ql

4

?/1 (power) 1
V/v/B/b ej

M 8

m qk

> ql

. el

N qj

X qh

x 9

-/-- ea
0/10 el
>10/11 ql

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;

;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

N

X

m

M

.

>

-

?/1

?/1

;

x

?/1

O

f

F

G

g

N

X

m

M

.

>

-

?/1

?/1

;

x

?/1

O

f

F

G

g

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