Sony HT-K25 / TA-VE25 Service Manual ▷ View online
5
TA-VE25
SECTION 2
TEST MODE
Note: Before loading test mode. Be sure to bring in the entire sys-
tem (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.
WMS25)). This product is system product, and the entire
system is needed to determine the location requiring repair.
[Software Version Display Mode]
* The software version is displayed.
Procedure:
While depressing the VIDEO button, press the ?/1 button to turn
on the main power. The destination and the software version are
displayed for four seconds.
* The software version is displayed.
Procedure:
While depressing the VIDEO button, press the ?/1 button to turn
on the main power. The destination and the software version are
displayed for four seconds.
[Fluorescent Indicator Tube Test Mode]
* Fluorescent segments and LEDs are tested when this test is ac-
* Fluorescent segments and LEDs are tested when this test is ac-
tivated.
Procedure:
While depressing the VIDEO and the SOUND FIELD buttons
simultaneously, press the ?/1 button to turn on the main power.
1. All segments turn on (Holizontal display).
While depressing the VIDEO and the SOUND FIELD buttons
simultaneously, press the ?/1 button to turn on the main power.
1. All segments turn on (Holizontal display).
The MUTING LED turns on.
2. Press the VIDEO button, confirm the display.
The VIDEO LED turns on.
3. Press the VIDEO button, confirm the display.
The TV LED turns on.
4. Press the VIDEO button, all segments turn on (Vertical dis-
play).
The AUX LED turns on.
5. Press the VIDEO button, confirm the display.
The SAT LED turns on.
6. Press the VIDEO button, confirm the display.
The DVD LED turns on.
7. Press the VIDEO button, all segments turn off.
The SIRCS LED turns on.
8. Every pressing of the VIDEO button turns on each segment
one after another in the same order.
(not only the VIDEO button, but also the other buttons such
as DVD , TV , SAT and AUX can be used.)
(not only the VIDEO button, but also the other buttons such
as DVD , TV , SAT and AUX can be used.)
9. To exit from this mode, press the ?/1 button.
[All Clear Mode]
* All preset contents are cleared when this mode is activated.
Procedure:
While depressing the AUX and the ;PLII buttons simultaneously,
press the ?/1 button to turn on the main power. The message
“INITIAL” is displayed for four seconds and initialization is
performed.
* All preset contents are cleared when this mode is activated.
Procedure:
While depressing the AUX and the ;PLII buttons simultaneously,
press the ?/1 button to turn on the main power. The message
“INITIAL” is displayed for four seconds and initialization is
performed.
6
TA-VE25
[DSP Test (The Remote Test)]
* DSP communication parameter swap mode is set and the re-
* DSP communication parameter swap mode is set and the re-
mote commander is tested when this mode is activated.
Procedure:
While depressing the DVD and the SOUND FIELD buttons
simultaneously, press the ?/1 button to turn on the main power.
1. The message “DSP TEST” is displayed.
2. Press the ;PLII button, the message “SWAP NRM” is dis-
While depressing the DVD and the SOUND FIELD buttons
simultaneously, press the ?/1 button to turn on the main power.
1. The message “DSP TEST” is displayed.
2. Press the ;PLII button, the message “SWAP NRM” is dis-
played and DSP swap mode is set to OFF.
The remote control receiver IC201 and IC204 (Control center
both sides) are operable and the SIRCS LED turns on when
the remote signal is received.
The remote control receiver IC201 and IC204 (Control center
both sides) are operable and the SIRCS LED turns on when
the remote signal is received.
3. Press the ;PLII button, the message “SWAP ALL” is dis-
played and DSP swap mode is set to ALL.
The remote control receiver IC201 (Control center buttons side)
is operable and the SIRCS LED turns on when the remote sig-
nal is received.
The remote control receiver IC201 (Control center buttons side)
is operable and the SIRCS LED turns on when the remote sig-
nal is received.
4. Press the ;PLII button, the message “SWAP CSW” is dis-
played and DSP swap mode is set to CSW.
The remote control receiver IC204 (Control center LEDs side)
is operable and the SIRCS LED turns on when the remote sig-
nal is received.
The remote control receiver IC204 (Control center LEDs side)
is operable and the SIRCS LED turns on when the remote sig-
nal is received.
5. Press the ;PLII button, the message “SWAP SLR” is dis-
played and DSP swap mode is set to SLR.
The remote control receiver IC204 (Control center LEDs side)
is operable and the SIRCS LED turns on when the remote sig-
nal is received.
The remote control receiver IC204 (Control center LEDs side)
is operable and the SIRCS LED turns on when the remote sig-
nal is received.
6. To exit from this mode, press the ?/1 button.
[Key Test]
* All keys (without the ?/1 button) are tested when this mode is
* All keys (without the ?/1 button) are tested when this mode is
activated.
Procedure:
While depressing the VIDEO and the ;PLII buttons
simultaneously, press the ?/1 button to turn on the main power.
1. The message “12345678” is displayed. If the button corre-
While depressing the VIDEO and the ;PLII buttons
simultaneously, press the ?/1 button to turn on the main power.
1. The message “12345678” is displayed. If the button corre-
sponding to the following number is pressed, the number on
the display will be turned off.
the display will be turned off.
2. To exit from this mode, press the ?/1 button.
Key numbers
1 : VIDEO , 2 : DVD , 3 : TV , 4 : SAT , 5 : AUX ,
6 : SOUND FIELD , 7 : ;PLII , 8 : MUTING
1 : VIDEO , 2 : DVD , 3 : TV , 4 : SAT , 5 : AUX ,
6 : SOUND FIELD , 7 : ;PLII , 8 : MUTING
7
7
TA-VE25
SECTION 3
DIAGRAMS
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
f
: internal component.
•
b
: Pattern from the side which enables seeing.
•
Indication of transisitor.
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
f
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
• Power voltage is DC 12V, 5.6V and fed with subwoofer
(SA-WMS25) from external CONTROL jack.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: ANALOG
c
: DIGITAL
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
MAIN BOARD
LED BOARD
ENC BOARD
SW BOARD
DISP BOARD
CIRCUIT BOARDS LOCATION
1
Q101 collector
– MAIN Board –
42.4 V
153.5 kHz
2
IC203
id
XI
– DISP Board –
6.1 V
16 MHz
• Waveforms
TA-VE25
8
8
3-1. Printed Wiring Board – Main Section – •
: Uses unleaded solder.
IC151
IC155
IC153
IC159
IC158
IC157
IC156
IC102
IC152
12
Ref. No.
Location
D101
A-5
D102
A-5
D103
A-5
D104
A-5
D105
A-4
D106
A-4
D107
A-4
D108
A-5
D109
A-4
IC102
B-6
IC151
D-6
IC152
D-6
IC153
C-6
IC155
C-6
IC156
C-4
IC157
B-2
IC158
B-2
IC159
C-5
Q101
A-6
Q102
A-6
Q151
B-5
Q152
C-3
Q153
B-6
• Semiconductor
Location
Click on the first or last page to see other HT-K25 / TA-VE25 service manuals if exist.