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Model No.: 14LAANZACDC
Version: 1.0
3. Vertical
linearity
a. Receive Philips circular test signal (PAL system).
b. Press PROD (FACTORY) button on the maintenance use remote controller to start
adjusting mode.
c. Press CH ± button to select V.LINE option. Use VOL ± button to adjust the value of
V.LINE till the vertical linearity reaches the best.
d. AV receives Philips circular test signal (NTSC system).
e. Press CH ± button to select NT. LINE option. Use VOL ± button to adjust the value
of NT. LINE till the vertical linearity reaches the best.
f. Press PROD (FACTORY) button till exit.
Item
TV system adapting & AV in /output inspection
Measuring equipment
SG (with NTSC3.58). User remote controller
Dual trace oscilloscope
Preparation before Adj.
Input TV and AV signal
Inspection procedure
1. Input the TV signal which system is designated in technical specification.
2. Switch TV system to the set by pressing SYS key on user remote controller according to the
TV system in SG. The picture and sound must be normal.
3. Press TV /AV key, to select AV input. The picture and sound must be normal.
4. AV output inspection. Load a 75
Ω
resistor to VIDEO output terminal, 1 Vp-p video output
signal that is from TV signal should be observed on the oscilloscope. Load a 10K resistor to
AUDIO output terminal, 0.7Vp-p audio signal that is from TV should be observed on the
oscilloscope.
Item General
adjustment
Measuring Equipment
SG
Service remote controller and user remote controller
Preparation before Adj.
Brightness, contrast and color should be set in standard
Press PP key repeatedly to set the picture at Factory 2 (in standard)
1. Receive the monoscope pattern signal
2. Turn the focus adjusting VR to make the picture clear.
3. Press PRD key on service remote controller to set the set into manufactory adjustment mode.
4. Adjust the picture size roughly by service remote controller.
5. Grid 2 voltage adjustment.
Press MUTE key on service remote controller, to set the screen into a horizontal line.
Clockwise turn screen VR gradually until a horizontal line appears on the screen.
6. Press MUTE key again and changing back to normal screen.