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Chapter 1
VZ8 Chassis Model/Features
FEATURES VS-45607 VS-50607 VS-60607 VS-50707 VS-55707 VS-60707 VS-70707
Chassis VZ8 VZ8 VZ8 VZ8+ VZ8+ VZ8+ VZ8+
Screen Size 45" 50" 60" 50" 55" 60" 70"
DiamondShield Optional Optional Optional Included Included Included Included
Digital Convergence X X X X X X X
Scan Velocity Modulation X X X X
Digital Comb Filter 3DYC 3DYC 3DYC 3DYC 3DYC 3DYC 3DYC
Rear A/V & S-Video 2 2 2 2 2 2 2
Front A/V & S-Video 1 1 1 1 1 1 1
Component Inputs (Y,CR&CB) 1 1 1 1 1 1 1
Video Monitor 1 1 1 1 1 1 1
Fixed/Variable Audio R/L 1 1 1 1 1 1 1
Table 1-1

A total of seven Projection TV Models use one of in Chapter 3, and the convergence circuitry is de-
two versions of the VZ8 Chassis. Three models use scribed in Chapter 4.
the VZ8 Chassis and four models use the VZ8+ Chas-
sis. Table 1-1 lists the models and some of the main Luminance/Chrominance separation is acheived
features. through the 3D-Y/C process, a method that digitally
processes an entire video frame. This method pro-
The VZ8 Chassis uses some of the latest technolo- duces results far superior than those that only pro-
gies available, including those listed in Figure 1-1. cess two or three lines at a time such as Digital Dy-
namic or 2D-Y/C processing.
Conve rge nce & Raste r Corre ction
Digital Circuitry
Lum inance /Chrom inance Separa tion The PIP circuitry features the Picture out of Pic-
3-D Y/C ture feature in all VZ8 Models. The PIP circuitry
PIP description is in Chapter 7.
Picture out of Picture
The V-Chip circuitry allows advanced program
Advanced Program Blocking
Com pone nt Inputs
blocking by subject matter.
DVD Component Input Circuitry
Se lf Dia gnostics Component Video Inputs are featured in all VZ8
LED Indication of Failure models. They are labeled DVD Inputs, and consist
Figure 1-1: VZ8 Chassis Technologies of three video Input jacks, plus Right and Left Au-
dio Jacks. The video jacks are denoted as Y, Cr and
The VZ8 chassis has Digital Convergence and Cb. This method allows the baseband Luminance
Raster Correction circuitry. This not only affects and Color Difference Signals to be coupled directly
the circuitry, but also the Convergence and Raster from a DVD player, avoiding any signal degredation
Correction Adjustments. Adjustments are covered that can be caused by chroma modulation and de-

Page 1-1
Basically the signals are Y (Luminance), R-Y, and One sub-menu item under Advanced Features is
B-Y. In the NTSC format the three signals have the the user's Advanced Convergence Feature. It dis-
following amplitude relationship: plays complete Crosshatch pattern allowing the user
Y = 0.7 Vp-p (plus sync) to adjust 64 intersections in the pattern. If the con-
R-Y = 1.0 Vp-p vergence gets too far off, the user still has the op-
B-Y = 1.3 Vp-p tion of selecting Reset to Factory Settings, in the
initial Convergence menu.
The designations Cr and Cb denote that the R-Y
and B-Y are reduced in amplitude, R-Y by a factor The AV Memory, under Audio Video Settings has
of 0.71, and B-Y by 0.56. This results in the fol- five AV Memory selections:
lowing signal amplitudes: Standard -- for typical viewing
Y = 0.7 Vp-p (plus sync = 1.0 Vp-p) Daylight -- for daylight viewing
Cr = 0.7 Vp-p Evening -- for evening viewing
Cb = 0.7 Vp-p Home Theater
DVD -- for DVD viewing
The Self Diagnostics provides the servicer with a
method to determine the type of failure that causes In each category, the video and audio controls are
the set to go into shutdown. set for optimum picture. The default control set-
tings for each of the AV Memory categories are
User Menus shown in Table 1-3.
Figure 1-2 shows the Main Menu, listing four Sub
Menu Categories. Most of the Menu Items are clear.
Others warrant further explanation.
User Adjustments
The V-Chip Parental Lock enables the user to lock Most user adjustments will be made using the
out specific types of TV programming. Program VIDEO and AUDIO buttons on the remote con-
rating information is transmitted on the 21st hori- trol. Pressing the AUDIO button cycles through
zontal line during the vertical blanking interval. six audio adjustments, or options:
1) Bass
The V-Chip lock out can be active at all times, set 2) Treble
for a specific time period every day, or turned off 3) Balance
completely. If the program on a selected channel is 4) Surround
locked, the screen goes blue and an on-screen dis- 5) Listen To
play indicates that the program is locked. If the PIP 6) Level Sound
source program is locked, a black insert picture ap-
pears when PIP is activated. Pressing the VIDEO button sequences through seven
video adjustments/options.
MAIN MENU 1) IRIS (On or Off)
V-Chip Parental Lock 2) Contrast
3) Brightness
Channel Edit 4) Sharpness
Advanced Features 5) Tint
Audio Video Settings 6) Color
7) Color Temperature (High, Medium or Low)

Figure 1-2: Main Menu
Page 1-2
ADJUSTMENT Standard Daylight Evening Home Theater DVD
Tint 31 31 31 31 31
Color 31 31 31 27 31
Contrast 63 63 63 45 63
Brightness 31 40 25 31 31
Sharpness 31 31 31 35 35
Bass 31 35 35 31 31
Treble 31 35 35 31 31
Balance 31 31 31 31 31
Table 1-3

Page 1-3
Remote Control
The Remote Control for VZ8 models is illustrated
in Figure 1-3. Its functions are straightforward.

The numerical buttons 0 through 9, are used to
enter numerical values for Time Setting, Alarm set-
ting, V-Chip Lock Code, etc. The buttons are also
used to directly access a channel.

The numerical buttons channel change is a three digit
system. Channels with less than three digits may be
accessed in one of three ways.
1) Add zeros prior to entering the channel
number, making it a three digit entry. Press
002 for channel 2. PIP/POP PIP INPUT PIP CH

2) Enter the channel number then press EN- PIP SIZE EXCH

3) Enter just the channel number. There will
be a four second delay before the channel
change occurs.

When the QV (Quick View) button is pressed, the
TV changes to the previous channel selection. If
pressed again it returns to the original channel. Re-
peated pressing will toggle the TV back and forth
between the two channels. Figure 1-3: Remote Control

When viewing a normal TV picture with no Menu 1) Side by Side the main and sub pictures
displayed, pressing Info activates the Detail Status are displayed side by side. Both pictures are
Display. This display includes: compressed horizontally to fit on the 4:3
Channel Number aspect screen.
Channel Name (if any) 2) Three Picture Channel Scan the set
SAP, STEREO, CC, and SQV scans through channels, displaying the
V-Chip rating (if any) content of three channels at a time in small
Time display insert pictures. The insert for the current
channel in the scanning process is live, the
other two inserts are still pictures.
3) Single Insert Picture