Screen Position Adjustment - Zenith D52WLCD Series Service Manual

4-2. VCOM Adjustment
(1) Required Test Equipments
1) PC PATTERN GENERATOR : Pattern Generator which
can generate each R,G,B signal and can observe the
FLICKER best(ex: me Character Pattern).
2) (Fig. 2) Equipment compositon
3) Remote Control
4) Circuit thing for Adjustment(Except Driver Board Assy of
adjustment model)
(2) Equipment Composition
Equipment to measure
Optics
SCREEN
(Fig. 2-1) Using Adjustment of Circuit thing for Adjustment
Equipment to measure
Optics
Adjustment Connecctor
(Fig. 2-2) TV Set status Adjustment
(3) Preparation for Adjustment
1) Connect the PC Pattern Generator with circuit thing for
adjustment(circuit block except driver part) and adjustment
Jig. shown upper Fig. 2.
2) Set the PC Pattern generator with displayable format and
turn on it.
(4) Adjustment Sequence
1) Turn on the adjustment Jig.
2) Select a RGB_PC by pressing Input Select Key on
Remote Control.
3) Enter to adjustment mode by pressing IN-START button on
Remote Control.
4) Select No. 6(62352), adjust No. 4(62352 RVCOM), No.
7(62352 GVCOM) and No. 10(62352 BVCOM).
5) Decrease flicker by using Volume button.
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, get out of adjustment mode
by pressing IN-START button on SVC Remote Control.
D52WLCD
ADJUSTMENTS
Adjustment Jig
Circuit thing
for Adjustment
PC
PC Pattern
SET
Generator
Stand
Adj.
Jig
39
5. Assembling Adjustment
5-1. Screen Tilt & Keystone Adjustment
(1) Required Test Equipments
1) Six angles wrench and spanner for knob adjustment or fix-
ation
2) XGA output PC
3) Remote Control
(2) Preparation for Adjustment
1) Do not assemble the front pannel equipment so that you
can adjust the adjustment knob(Fig. 3).
2) Turn the TV ON and select input mode to RGB_PC.
3) Connect XGA output terminal to PC input of TV.
4) Select window screen.
(3) Adjustment Sequence
1) Stick the Engine(Fig. 3) to the knob poll for adjustment and
check the key stone & tilt watching TV screen.
2) Rotate left/right adjustment knob below and adjust engine
angle.
3) Adjustment knob of both sides so that the tilt and keystone
are to be under the spec. (The gap between max and min
: under 4mm)
4) After adjusting like 3), fix the engine with screw for fixation
(2EA. adjustment knob and engine fixing screw)

5-2. Screen Position Adjustment

(1) Required Test Equipment
A remote control for adjustment
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 5 min and over before adjustment.
3) Receive the main/sub signal of company through 13CH by
split screen.
(Fig. 3)
ADJUSTMENTS