Zenith L20V36 Series, Service Manual

Page: 9 / 23

- 9 -
1. Application Object
This instruction is for the application to the LCD TV.
2. Notes
(1) This set uses an adapter, so connect the adapter to the TV
correctly before adjustment.
(2) These adjustments must be performed in the correct
sequence.
(3) These adjustments must be performed at 25
!
5 c C of
temperature and 65
!
10% of relative humidity.
(4) The input voltage of the receiver must be kept at
100~220V, 50/60Hz during adjustment.
(5) The set must be operated for 30 minutes before
adjustment. Heat Run must be performed with the full white
signal or a TV noise signal.
3. Component Mode Adjustment
: Component Model only
3-1. Required Test Equipment
(1) MSPG-925LTH, Pattern Generator for Digital TV 1080i
mode Color-Bar signal output, Digital TV Set-Top Box
(2) This time the Y input signal Level which passes the input
vertical resistance of the Set must become the 1Vp-p.
(3) Remote controller for adjustment (SVC Remocon)
3-2. Preparation for Adjustment
(1) Perform Heat Run for more than 30 minutes with a white
pattern.
(2) Connect the signal from a pattern generator to the LCD
TV’s component Input Jack.
3-3. YPbPr ADJUST Adjustment
(1) Receive the Color Bar Pattern signal of Digital TV 1080i
Mode from Pattern Generator.
(2) Select the YPbPr ADJUST of the adjustment mode(SVC
Menu Mode) by pressing the IN-START Key(or SVC Key)
on the remote controller for adjustment(SVC).
(3) Start the adjustment by pressing the
F
,
G
Key(Volume
Key) in the YPbPr ADJUST of the adjustment mode.
(4) The “To Set” letter of OSD Box top of the screen center is
exchanged with the “OK” and when, it completes a
adjustment.
4. PC Input Mode Adjustment
: 15 Inch Model only
4-1. Required Test Equipment
(1) 801GF(or VG819), Pattern generator with a Gray Pattern
of 16(11) tones.
(2) Remote controller for adjustment (SVC Remocon)
4-2. Preparation for Adjustment
(1) Perform Heat Run for more than 30 minutes with a white
pattern.
(2) Connect the signal from a pattern generator to the LCD
TV’s PC Input Jack(D-Sub).
4-3. Auto Gray Adjustment
(1) Apply the gray signal of XGA(1024X768) 16 tones(H: 31-
214 Pattern, V: 60-84 Pattern) by using 801GF.
Or apply the gray signal by using VG819, Pattern
generator with a Gray Pattern of 16(11) tones.
(2) Select the adjustment mode(SVC Menu Mode) by pressing
the ADJ Key(or SVC Key) on the remote controller for
adjustment(SVC) and adjust the Auto gay from 0 to 1 by
using Key.
ADJUSTMENT INSTRUCTION