Sony KV-32XBR400, Руководство по обучению

Страница: 6 / 95

2
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 Aspect
Ratio
MSRP
KV32XBR400 32 diagonal 4:3 $1999.99
KV36XBR400 36 diagonal 4:3 $2499.99
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
Nam e Form at Source
RF NTSC VHF, UHF, Cable
Video 1-4 +
Stereo
jacks
S or Com posite video:
Standard resolution 480
interlaced lines (480i).
Video tape recorder,
cam corder, DVD
player, TiVO
recorder
Video 5-6 +
Stereo
Jacks Com ponent video: Standard
Resolution 480i, 480p or
High Resolution 1080i form at DTV, Satellite, or
Cable Converter box
Control S Sony Audio Equipm ent
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 Surge
1.2 A 1.1 A 6 A (degaussing)
General Servicing Information
Item Location Comments
Self
Diagnostics Circuits on A & D
boards. Indicator on
front panel. Standby/Timer LED
blinks to ID problem
area.
Filament
Voltage From 7V, A Bd
(Primary PS) and HOT
transformer, D Bd. The CRT filament
voltage comes from 2
sources.
High Voltage
Converter D board near flyback AFC signal from HOT
turns ON HV Converter.
G2 (Screen
adjustment) On the CRT board Adjustment is in the
board replacement
guide (appendix).
Focus Control On the FBT Adjust for sharp picture
center and sides
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.