Introduction - Sony KV-32XBR400 Training Manual

Introduction

This model KV32XBR400 is a high resolution TV designed to bridge the
gap between the current analog TV sets and the forthcoming high defini-
tion digital TV (HDTV) sets. This set can accept the current standard
resolution NTSC TV transmissions, DVD, VHS, and Camcorder video sig-
nals, convert them, and display them on a high-resolution TV screen. An
external set top converter box is necessary to receive Digital TV pro-
grams.
Related Models
DX-1A TV Chassis Models
Model Screen size
KV32XBR400 32 diagonal
KV36XBR400 36 diagonal
Higher Resolution Inputs
This TV can also accept standard resolution 480p or high resolution 1080i
video signal formats from an external HDTV, satellite, or cable converter
box as component video (Y, Pb, Pr) inputs. These 480p and 1080i sig-
nals can have a wide 16:9 aspect ratio. If they do, the display will be in
letterbox format with black above and below the picture on the 4:3 aspect
ratio picture tube of these TV sets.
Only the Digital TV's 720p resolution video format cannot be displayed on
this set. The picture will not be synchronized.
KV32XBR400 / KV36XBR400Inputs
Name Format
RF NTSC
Video 1-4 + S or Composite video:
Stereo Standard resolution 480
jacks interlaced lines (480i).
Video 5-6 + Component video: Standard
Stereo Resolution 480i, 480p or
Jacks High Resolution 1080i format
Control S Sony
Aspect MSRP
Ratio
4:3 $1999.99
4:3 $2499.99
Source
VHF, UHF, Cable
Video tape recorder,
camcorder, DVD
player, TiVO
recorder
DTV, Satellite, or
Cable Converter box
Audio Equipment
Circuitry Information
The power consumption and self-diagnostics remain the same as other
Sony TVs. This set's change to high-resolution video results in circuitry
changes to the video processing, horizontal frequency (fixed at 33.75kHz),
and high voltage generation.
Power Consumption at 120Vac
Snow Dark screen/video 1
1.2 A 1.1 A
General Servicing Information
Item Location
Self Circuits on A & D
Diagnostics boards. Indicator on
front panel.
Filament From 7V, A Bd
Voltage (Primary PS) and HOT
transformer, D Bd.
High Voltage D board near flyback
Converter
G2 (Screen On the CRT board
adjustment)
Focus Control On the FBT
Filament Voltage - This CRT voltage comes from two sources:
•
Unregulated 7V supply from the Primary Power Supply on the A board
(used as a preheat).
•
The HOT (horizontal output transformer) after a 6Vdc regulator on the
D board (main filament voltage supply).
High Voltage Generation - An independent HV oscillator circuit with a
special high frequency flyback transformer regulates the HV to 31.5kV.
The HV converter stage is turned on only after the Horizontal drive signal
from the HOT is detected.
2
Surge
6 A (degaussing)
Comments
Standby/Timer LED
blinks to ID problem
area.
The CRT filament
voltage comes from 2
sources.
AFC signal from HOT
turns ON HV Converter.
Adjustment is in the
board replacement
guide (appendix).
Adjust for sharp picture
center and sides