DOWNLOAD Sony KV-32XBR400 Service Manual ↓ Size: 9.17 MB | Pages: 119 in PDF or view online for FREE

Model
KV-32XBR400
Pages
119
Size
9.17 MB
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PDF
Document
Service Manual
Brand
Device
TV
File
kv-32xbr400.pdf
Date

Sony KV-32XBR400 Service Manual ▷ View online

— 6 —
KV-32XBR400/36XBR400/36XBR400H/38DRC1/38DRC1C
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 when the diagnostic screen is displayed,
as shown below:
ENTER
Channel 8
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
+B overcurrent (OCP)
Occurs when an overcurrent (more than 6A) on the +B (135V) line is detected by R6598/
R6591. It will cause Q6520 to turn on and force the AC relay to turn off through Q6532 and
Q6530.
+B overvoltage (OVP)
Occurs when 1) overvoltage (more than +140V) on the +B (135V) line is detected by IC6505
or 2) an overvoltage (more than 7.5V) on the unreg 7V line is detected by D6014.  The AC
Relay will turn off through Q6532 and Q6530.
Vertical Deflection Stopped
Occurs when an absence of the vertical deflection pulse is detected by IC201. Power supply
will shut down when waveform interval exceeds 2 seconds.
White Balance Failure
If the RGB levels do not balance within 2 seconds after the power is turned on, this error will
be detected by IC201.  The unit will stay on, but there will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
Low B Error
Occurs when set 5V is out.
Horizontal Deflection Stopped Occurs when either 1) a +B overcurrent is detected (IC5007) or 2) overheating is detected
(Thermistor TH5002).
— 7 —
KV-32XBR400/36XBR400/36XBR400H/38DRC1/38DRC1C
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:
1. Check the area of your repair for unsoldered or poorly
soldered connections. Check the entire board surface
for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground
straps, and mounting hardware have been replaced.
Be absolutely certain that you have replaced all the
insulators.
4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair.
Point them out to the customer and recommend their
replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer
and recommend their replacement.
6. Check the line cords for cracks and abrasion.
Recommend the replacement of any such line cord
to the customer.
7. Check the B+ and HV to see if they are specified
values. Make sure your instruments are accurate;
be suspicious of your HV meter if sets always have
low HV.
8. Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
leakage. Check leakage as described below.
SAFETY CHECK-OUT
Leakage Test
The AC leakage from any exposed metal part to earth
ground and from all exposed metal parts to any exposed
metal part having a return to chassis, must not exceed 0.5
mA (500 microamperes). Leakage current can be
measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229
or RCA WT-540A. Follow the manufacturers'
instructions to use these instructions.
2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means
of a VOM or battery-operated AC voltmeter. The “limit”
indication is 0.75 V, so analog meters must have an
accurate low voltage scale. The Simpson’s 250 and
Sanwa SH-63TRD are examples of passive VOMs that
are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable
(see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-
plate retaining screw on most AC outlet boxes is also at earth
ground. If the retaining screw is to be used as your earth
ground, verify that it is at ground by measuring the resistance
between it and a cold-water pipe with an ohmmeter. The
reading should be zero ohms. If a cold-water pipe is not
accessible, connect a 60- to 100-watt trouble- light (not a
neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary, to locate the hot
side on the line; the lamp should light at normal brilliance if the
screw is at ground potential (see Figure B).
Figure B. Checking for earth ground.
Figure A. Using an AC voltmeter to check AC leakage.
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
— 8 —
KV-32XBR400/36XBR400/36XBR400H/38DRC1/38DRC1C
The instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers shown reflect
those of the Operating Instruction Manual.
SECTION 1    GENERAL
Introducing the FD Trinitron Wega
3
Using the Remote Control
Inserting Batteries
Insert two size AA (R6) batteries (supplied) by matching the + and – 
on the batteries to the diagram inside the battery compartment.
Remote Control 
Overview
Here’s an overview of the buttons on the remote control you will 
probably use most often. For a complete description of the remote 
control, see “Using the Remote Control” on page 40.
Remove the batteries to avoid damage from possible battery leakage whenever you 
anticipate that the remote control will not be used for an extended period.
Handle the remote control with care. Avoid dropping it, getting it wet, or placing it in 
direct sunlight, near a heater, or where the humidity is high.
To Do This ...
Use This Button
Turn the TV 
on and off
TV (POWER)
Select channels 
directly
0 – 9 and ENTER
Press 0 – 9 to select a channel, the channel changes 
after 2 seconds. Press ENTER for immediate selection.
Scan through 
channels 
CH +/-
 To scan rapidly through the channels, press and hold down 
the CH+ or CH- button.
Adjust the volume 
VOL +/-
Switch video inputs 
(such as a VCR)
TV/VIDEO
Press repeatedly to toggle through all video inputs.
Display the Menu to 
make changes to the 
TV
MENU
For details, see “Using the Menus” on page 25.
View the Favorite 
Channels list
FAVORITES
For details, see “Using Favorite Channels” on 
page 20.
Using the on-screen 
functions
TV
2
1
3
5
4
6
8
7
9
0
TV
VCR/DVD SAT/CABLE
POWER
SLEEP
DISPLAY
ANT
GUIDE
FAVORITES
VOL
MENU
CH
 AV 1 2  3 DVD 
RESET
JUMP
ENTER
RM -Y174
MODE
PICTURE
VCR/DVD SAT/CABLE
FUNCTION
TV
TV/VIDEO
MUTING
FREEZE
z
Move
Select
FAVORITES
VOL
MENU
CH
Installing the TV
7
Cable and Antenna
If your cable provider does not feature local channels, you may find 
this set up convenient.
Select CABLE or antenna (ANT) mode by pressing ANT on the remote 
control.
Cable Box 
Connections 
Some pay cable TV systems use scrambled or encoded signals that 
require a cable box to view all channels.
Cable Box
1
Connect the coaxial connector from your cable service to the 
cable box’s IN jack.
2
Using a coaxial cable, connect the cable box’s OUT jack to the 
TV’s VHF/UHF jack.
In order to receive channels with an antenna, you need to turn your Cable to OFF and 
perform the Auto Program function (see page 30).
Rear of TV
AUX
TO CONVERTER
VHF/UHF
Antenna cable
(No connection to 
CATV cable
TO CONVERTER)
If you will be controlling all channel selection through your cable box, you should 
consider using the Channel Fix feature (see page 30).
Rear of TV
OUT
Cable box
IN
Cable
VHF/UHF
Installing the TV
8
Cable Box and Cable
For this set up, you can switch between scrambled channels (through 
your cable box), and normal (CATV) channels by pressing ANT on the 
remote control.
Your Sony remote control can be programmed to operate your cable box (see 
“Programming the Remote Control” on page 42). 
When using Favorite Channel or Twin View, you cannot view the AUX input in the 
window picture.
Pressing ANT switches between these inputs.
If you are connecting a cable box through the AUX input and would like to switch 
between the AUX and normal (CATV) input you should consider using the Channel Fix 
feature (see page 30).
Rear of TV
OUT
75-ohm coaxial cable (not supplied)
IN
AUX
TO CONVERTER
VHF/UHF
CATV cable (unscrambled channels)
Cable box
Signal
z
Installing the TV
9
Connecting a VCR and Cable
1
Connect the cable TV cable to the VCR’s IN jack.
2
Using a coaxial cable, connect the VCR’s OUT jack to the TV’s 
VHF/UHF jack.
3
Using an A/V cable, connect the VCR’s A/V OUT jacks to the 
TV’s A/V IN jacks.
If your VCR has an S VIDEO jack: For best picture quality, use an S VIDEO connection 
instead of the yellow video cable on your combined A/V cable. Using an S VIDEO cable, 
connect the VCR’s S VIDEO OUT jack to the TV’s S VIDEO IN jack. S VIDEO does not 
provide audio, so audio cables must still be connected to provide sound.
VCR
TV
Cable
Coaxial cable
A/V cable
AUDIO-R (red)
AUDIO-L (white)
VIDEO (yellow)
— 9 —
KV-32XBR400/36XBR400/36XBR400H/38DRC1/38DRC1C
Installing the TV
10
Connecting a VCR and Cable Box
1
Connect the single (input) jack of the splitter to your incoming 
cable connection, and connect the other two (output) jacks (using 
coaxial cable) to IN on your cable box and VHF/UHF on your TV.
2
Using a coaxial cable, connect the cable box’s OUT jack to the 
VCR’s VHF/UHF IN jack.
3
Using an A/V cable, connect the VCR’s A/V OUT jacks to the 
TV’s A/V IN jacks.
If your VCR has an S VIDEO jack: For best picture quality, use an S VIDEO connection 
instead of the yellow video cable on your combined A/V cable. Using an S VIDEO cable, 
connect the VCR’s S VIDEO OUT jack to the TV’s S VIDEO IN jack. S VIDEO does not 
provide audio, so audio cables must still be connected to provide sound.
Cable 
Coaxial
cable
A/V cable
Coaxial
cable
VCR
TV
AUDIO-R (red)
AUDIO-L (white)
VIDEO (yellow)
box
Splitter
(not supplied)
Installing the TV
12
Connecting a Satellite Receiver
1
Connect the satellite antenna cable to the satellite receiver’s 
SATELLITE IN jack.
2
Using an A/V cable, connect the satellite receiver’s A/V OUT 
jacks to the TV’s A/V IN jacks.
3
Connect a coaxial cable from your cable or antenna to the TV’s 
VHF/UHF jack.
If your satellite receiver has an S VIDEO jack: For best picture quality, use an S VIDEO 
connection instead of the yellow video cable on your combined A/V cable. Using an S 
VIDEO cable, connect the satellite receiver’s VIDEO OUT jack to the TV’s S VIDEO IN 
jack. S VIDEO does not provide audio, so audio cables must still be connected to provide 
sound.
TV
Satellite receiver
Satellite 
cable
A/V cable
Coaxial 
cable
AUDIO-R (red)
AUDIO-L (white)
VIDEO (yellow)
antenna 
Installing the TV
13
Connecting a Satellite Receiver with a VCR
1
Connect the satellite antenna cable to the satellite receiver’s 
SATELLITE IN jack.
2
Connect the CATV cable to the VCR’s VHF/UHF IN jack.
3
Using a coaxial cable, connect the VCR’s OUT jack to the TV’s 
VHF/UHF jack.
4
Using an A/V cable, connect the satellite receiver’s A/V OUT 
jacks to the VCR’s A/V IN jacks.
5
Using an A/V cable, connect the VCR’s A/V OUT jacks to the 
TV’s A/V IN jacks.
TV
Satellite receiver
VCR
A/V cable
Coaxial 
cable
Coaxial 
cable
AUDIO-R (red)
AUDIO-L (white)
VIDEO (yellow)
Installing the TV
14
Connecting an Audio Receiver 
1
Using audio cables, connect the TV’s AUDIO OUT jacks to the 
audio receiver’s audio LINE IN jacks.
AUDIO-R 
AUDIO-L 
Line 
(red)
(white)
input
TV
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