Sony KV-XA25M80A Service Manual ▷ View online
– 6 –
KV-XA25M80A/XA29M80A
RM-952
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic
screen during repairs. When you have completed the repairs, clear the result display to “0”.
screen during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after
completion of the repairs.
completion of the repairs.
[Clearing the result display]
To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the
diagnostic screen is being displayed.
To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the
diagnostic screen is being displayed.
Channel [8]
/ 0
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
6. SELF-DIAGNOSTIC CIRCUIT
[+B overcurrent ªOCPº]
Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to
ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than
seven verticals in a period, the unit will automatically turn off.
ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than
seven verticals in a period, the unit will automatically turn off.
[Vertical deflection stopped]
Occurs when an absence of the vertical deflection pulse is detected by Q509 and
IC001 shut down the power supply.
IC001 shut down the power supply.
[Vertical deflection overcurrent]
Occurs when an overcurrent on V drive line is detected by Q507. Power supply will
be shut down when detect this by IC001.
be shut down when detect this by IC001.
[White balance failure]
If the RGB levels* do not balance or become low level within 5 seconds, this error
will be detected by IC301. TV will stay on, but there will be no picture.
will be detected by IC301. TV will stay on, but there will be no picture.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
IC301
Y/CHROMA JUNGLE
FROM
CRT
FROM
[+B] Q604 C6
[+B] Q604 C6
[V] Q509/507
IC001
SYSTEM
IC003
MEMORY
B-DAT
IO-SDAT
IK-IN
MP/
PROTECT
PROTECT
IO-8DAT
O-LED
SDA
5
45
21
18
51
46
35
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KV
-XA25M80A/XA29M80A
-XA25M80A/XA29M80A
RM-952
SECTION 1
GENERAL
The operating instruction mentioned here are partial abstracts
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remain as in the manual.
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remain as in the manual.
2
WARNING
• Dangerously high voltages are present inside the TV.
• Operate the TV only between 110 – 240 V AC.
To prevent fire or shock hazard, do not expose
the TV to rain or moisture.
the TV to rain or moisture.
Do not operate the TV if any liquid or solid object
falls into it. Have it checked immediately by
qualified personnel only.
falls into it. Have it checked immediately by
qualified personnel only.
Do not open the cabinet and the rear cover of the
TV as high voltages and other hazards are
present inside the TV. Refer servicing and
disposal of the TV to qualified personnel.
TV as high voltages and other hazards are
present inside the TV. Refer servicing and
disposal of the TV to qualified personnel.
Your TV is recommended for home use only.
Do not use the TV in any vehicle or where it may
be subject to excessive dust, heat, moisture or
vibrations.
Do not use the TV in any vehicle or where it may
be subject to excessive dust, heat, moisture or
vibrations.
Do not block the ventilation openings of the TV.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
For children’s safety, do not leave children alone
with the TV. Do not allow children to climb onto
it.
with the TV. Do not allow children to climb onto
it.
Do not plug in too many appliances to the same
power socket. Do not damage the power cord.
power socket. Do not damage the power cord.
Clean the TV with a dry and soft cloth.
Do not use benzine, thinner, or any other chemicals
to clean the TV. Do not scratch the picture tube.
Do not use benzine, thinner, or any other chemicals
to clean the TV. Do not scratch the picture tube.
For your own safety, do not touch any part of the
TV, the power cord and the antenna cable during
lightning storms.
TV, the power cord and the antenna cable during
lightning storms.
Do not place any objects on the TV.
3
Using Y
our New TV
Pull the power cord out by the plug. Do not pull
the power cord itself. Even if your TV is turned
off, it is still connected to the AC power source
(mains) as long as the power cord is plugged in.
Unplug the TV before moving it or if you are not
going to use it for several days.
the power cord itself. Even if your TV is turned
off, it is still connected to the AC power source
(mains) as long as the power cord is plugged in.
Unplug the TV before moving it or if you are not
going to use it for several days.
Install the TV on a stable TV stand and floor
which can support the TV set weight. Ensure that
the TV stand surface is flat and its area is larger
than the bottom area of the TV.
which can support the TV set weight. Ensure that
the TV stand surface is flat and its area is larger
than the bottom area of the TV.
WARNING (continued)
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8
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KV
-XA25M80A/XA29M80A
-XA25M80A/XA29M80A
RM-952
Using Your New TV
4
Getting Started
Step 1
Connect the antenna
If you wish to connect a VCR, see the Connecting a VCR diagram below.
Using Your New TV
IEC connector
(not supplied)
(not supplied)
To video and
audio outputs
audio outputs
VCR
(yellow)
-L (MONO) (white)
-R (red)
-R (red)
Antenna cable (not supplied)
To antenna
output
output
Rear of TV
Rear of TV
Connecting a VCR
To watch the video input, press t (see page 13).
: Signal flow
1
2
R
L
Y
C
B
C
R
VIDEO
VIDEO IN
VIDEO OUT
AUDIO
R L
To 8
(antenna
input)
(antenna
input)
To t 1 or 2
(video input)
(video input)
or
Antenna cable (not supplied)
Antenna cable (not supplied)
CAUTION
• Do not plug in the power cord until you have completed making all other
• Do not plug in the power cord until you have completed making all other
connections; otherwise a minimum leakage current might flow through
the antenna and other terminals to ground.
the antenna and other terminals to ground.
• To avoid battery leakage and damage to the remote, remove the batteries
from the remote if you are not going to use it for several days. If any
liquid that leaks from the batteries touches you, immediately wash it
away with water.
liquid that leaks from the batteries touches you, immediately wash it
away with water.
Audio/Video cable
(not supplied)
(not supplied)
To S video
output
output
S video cable
(not supplied)
(not supplied)
To
(S video input)
(S video input)
: Signal flow
Using Your New TV
Using Y
our New TV
5
Step 3
Preset the channels automatically
Tips
• If you want to stop automatic channel presetting, press SELECT twice.
• If your TV has preset an unwanted channel or cannot preset a particular
• If you want to stop automatic channel presetting, press SELECT twice.
• If your TV has preset an unwanted channel or cannot preset a particular
channel, then preset your TV manually (see page 10).
Note
• During automatic channel presetting, your TV screen will indicate “B/G”,
• During automatic channel presetting, your TV screen will indicate “B/G”,
“I”, “D/K” or “M” for the TV system.
Notes
• If you connect a monaural VCR, connect the yellow plug to
• If you connect a monaural VCR, connect the yellow plug to
(the yellow
jack) and the black plug to -L (MONO) (the white jack).
• If you connect a VCR to the 8 (antenna input) terminal, preset the signal
output from the VCR to the program number 0 on the TV.
• If both
(S video input) and t 1 (video input) at the rear of your TV
are input at the same time, the
(S video input) is automatically
selected. To view the video input to t 1 (video input), disconnect the
S video cable.
S video cable.
• Do not connect video equipment to the t 2 (video input) jacks at the
front and the rear of your TV at the same time; otherwise the picture will
not be displayed properly on the screen.
not be displayed properly on the screen.
• When no signal is input from the connected video equipment, the TV
screen becomes blue.
Step 2
Note
• Do not use old batteries nor use different types of batteries together.
• Do not use old batteries nor use different types of batteries together.
Insert the batteries
into the remote
into the remote
PROGR
MENU
AUTO
PROGR
PROGR
L(MONO)
2
1
2
1
1
VHF LOW B/G
Front of TV
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9
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KV
-XA25M80A/XA29M80A
-XA25M80A/XA29M80A
RM-952
Using Your New TV
Using Y
our New TV
7
Notes
•
•
If your DVD player can output interlace and progressive mode signals, select
the interlace output when connecting to
the interlace output when connecting to
(component video input) on your
TV. Your TV can receive either 525i/60Hz or 625i/50Hz interlace signals.
•
Some DVD player terminals may be labeled differently:
•
Since the high quality pictures on a DVD disc contain a lot of information,
picture noise may appear. In this case, adjust the sharpness (see Adjusting the
picture and sound settings
picture noise may appear. In this case, adjust the sharpness (see Adjusting the
picture and sound settings
on page 16).
Connecting a DVD player using the
(component
video input) jacks
1 Connect R and L under
(component video input) on your TV to the LINE OUT,
AUDIO R and L output connectors on your DVD player.
2 Connect Y, C
B
, and C
R
under
(component video input) on your TV to the
COMPONENT VIDEO OUT Y, C
B
, and C
R
output connectors on your DVD player.
DVD player
To
L (white)
R (red)
L (white)
R (red)
Audio cable
(not supplied)
(not supplied)
To component
video output
video output
Component video cable
(not supplied)
(not supplied)
To audio
output
output
: Signal flow
To
(component
video input)
(component
video input)
Connect
To (on the DVD player)
Y (green)
Y
C
B
(blue)
C
b
, B-Y or P
B
C
R
(red)
C
r
, R-Y or P
R
Rear of TV
Connecting a DVD player using the t (video input) jacks
DVD player
Audio/Video cable (not supplied)
(yellow)
-L (MONO) (white)
-R (red)
-R (red)
To t 1 or 2
(video input)
(video input)
: Signal flow
Rear of TV
VIDEO
R-AUDIO-L
LINE OUT
1
2
L(MONO)
R
VIDEO
R-AUDIO-L
LINE OUT
Y
COMPONENT VIDEO OUT
S VIDEO OUT
C
B
C
R
R
L
Y
C
B
C
R
Using Your New TV
6
Connecting optional components
You can connect optional audio/video components, such as a VCR, multi disc player,
DVD, camcorder, video game or stereo system.
To watch the video input of the connected equipment, press t (see page 13).
DVD, camcorder, video game or stereo system.
To watch the video input of the connected equipment, press t (see page 13).
Connecting a camcorder/video game equipment
using the t (video input) jacks
using the t (video input) jacks
Notes
• You can also connect video equipment to the t 1 or 2 (video input) jacks
• You can also connect video equipment to the t 1 or 2 (video input) jacks
at the rear of your TV.
• Do not connect video equipment to the t 2 (video input) jacks at the
front and the rear of your TV at the same time; otherwise the picture will
not be displayed properly on the screen.
not be displayed properly on the screen.
Connecting audio/video equipment using the T
(monitor output) jacks
(monitor output) jacks
1
2
L(MONO)
R
R
L
Y
C
B
C
R
PROGR
MENU
AUTO
PROGR
PROGR
L(MONO)
2
L (MONO)
R
2
Front of TV
Camcorder
Video game
equipment
equipment
To video and
audio outputs
audio outputs
Rear of TV
To
antenna
output
antenna
output
To video and
audio inputs
audio inputs
Audio system
To
audio
inputs
audio
inputs
VCR
: Signal flow
: Signal flow
To
t
2
(video input)
To T
(monitor
output)
(monitor
output)
or
Audio/Video cable (not supplied)
Antenna cable (not supplied)
Audio/Video cable
(not supplied)
(not supplied)
or
(yellow)
-L (MONO)
(white)
-R (red)
Note
• If you select “DVD” on your TV screen, the signal from the T
• If you select “DVD” on your TV screen, the signal from the T
(monitor output) jack will not be output properly. This does not indicate a
malfunction.
malfunction.
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