DOWNLOAD Sony KV-XA29M31 Service Manual ↓ Size: 4.75 MB | Pages: 110 in PDF or view online for FREE

Model
KV-XA29M31
Pages
110
Size
4.75 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-xa29m31.pdf
Date

Sony KV-XA29M31 Service Manual ▷ View online

– 5 –
KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp
from flashing.
4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it
is possible to bring up past occurances of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[Screen display] / channel [5] / Sound volume [-] / Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
STANDBY/SLEEP lamp
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
3 times
Diagnostic Item
Flash Count*
+B overcurrent/overvoltage
2 times
Vertical deflection stopped
White balance failure
5 times
* One flash count is not used for self-diagnostic.
002 : 000
003 : 000
004 : 000
005 : 001
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
101 : 000
SELF DIAGNOSTIC
– 6 –
KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
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”.
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.
[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.
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.
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.
[Vertical deflection stopped]
Occurs when an absence of the vertical deflection pulse is detected by Q509 and 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.
[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.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
IC301
Y/CHROMA JUNGLE
FROM
CRT
[V] Q509/507
IC001
SYSTEM
IC003
MEMORY
IK-IN
MP/
PROTECT
O-LED
IO-8DAT
B-DAT
IO-SDAT
5
21
18
51
46
SDA 35
FROM
[+B] Q604 C1
45
 7 
KV
-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
SECTION 1
GENERAL
2
WARNING
•  Dangerously high voltages are present inside the TV.
•  TV operating voltage: 220 – 240 V AC.
To prevent fire or shock hazard, do not expose
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.
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.
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 block the ventilation openings of the TV.
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.
Do not plug in too many appliances to the same
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.
For your own safety, do not touch any part of the
TV, the power cord and the antenna cable during
lightning storms.
Pull the power cord out by the plug. Do not pull
the power cord itself. Disconnect the TV before
moving it or if you are not going to use it for
several days.
3
Do not install the TV in an unstable position.
Use a proper TV stand.
Do not place any objects on the TV.
WARNING (continued)
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.
 8 
KV
-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954
Using Your New TV
4
Using Your New TV
Getting Started
Step 1
Connect the antenna
If you wish to connect a VCR, see the “Connecting a VCR” diagram below.
Connecting a VCR
To watch the video input, press t (see page 10).
: Signal flow
To video
and audio
outputs
IEC connector
(not supplied)
or
: Signal flow
Antenna cable (not supplied)
Antenna cable (not supplied)
Rear of TV
To t 1, 2 or 3
(video input)
 (yellow)
-L (MONO) (white)
-R (red)
Audio/Video cable (not supplied)
To S video
output
Rear of TV
VCR
To 8
(antenna)
To antenna
output
To 
(S video input)
1
2
3
R
L
Y
C
B
C
R
VIDEO
VIDEO IN
VIDEO OUT
AUDIO
R        L
Antenna cable (not supplied)
S video cable
(not supplied)
CAUTION
• Do not connect 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.
• 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.
5
Using Your New TV
Using Y
our New TV
Notes
• 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) 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 t 1 (video input), disconnect the S video cable.
• Do not connect video equipment to the t 3 (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.
• When no signal is input to the connected video equipment, the TV screen
becomes blue.
Step 2
Insert the batteries
into the remote
Note
• Do not use old batteries nor use different types of batteries together.
Step 3
Preset the channels automatically
Tips
• If you want to stop the automatic channel presetting, press MENU.
• If your TV has preset an unwanted channel or cannot preset a particular
channel, then preset your TV manually (see page 28).
Note (KV-XA29M50 only)
• During automatic channel presetting, your TV screen will indicate “B/G”,
“I”, ”D/K” or “M” for the TV system (“TV SYS”).
Front of TV
PROGR
MENU
AUTO
PROGR
ENTER
SELECT
L(MONO)
3
1
2
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