Screen Position Adjustment; Horizontal Position Adjustment - LG 52SX4D Service Manual

14. Screen Position Adjustment

14-1. Required Test Equipment
Service Remote Control

14-2. Horizontal Position Adjustment

(1) Press ADJ key on the remote control to enter the
adjustment mode.
(2) Select POSITION in the adjustment menu.
(3) The adjustment pattern below appears.
(4) Select the H_position with CHANNEL key.
<Fig . 13> Pattern for Screen Position Adjustment
(5) Change data by using the VOLUME keys on the remote
control in order to adjust left/right screen semmetry.
(6) If symptom is out of adjustable range: Check the light
engine adjustment
14-3. Vertical Position Adjustment
(1) Select V_position with CHANNEL key. (Initial V: 15)
(2) Change data with using the VOLUME keys on the remote
control in order to adjust up/down screen semmetry.
(3) If symptom is out of adjustable range: N.G.
(4) After adjustment is completed, recieve a NTSC-M Digital
Pattern and check the adjusment level.
Adjustment
Adjustment
<Fig . 14> Digital Pattern
ADJUSTMENT INSTRUCTIONS
15. Component AD9883A Offset/
Gain Adjustment
15-1. Required Test Equipment
Service Remote Control, 801GF/802F Pattern Generator
<Fig . 15> 720P/60Hz HozTVBar Pattern
15-2. Preparation for Adjustment
(1) Connect power and turn TV set on.
(2) Perform Heat-Run for at least 5 minutes.
(3) Select Component Input.
(4) Receive the 720P/60Hz, HozTVBar Pattern.
15-3. Offset/ Gain Adjustment
(1) Press ADJ key on the Remote Control to enter the
adjustment mode after more than 10 seconds of receiving
the signal.
(2) Adjustment is automatic by pressing the VOLUME+ (
key in AD9883A-SET item of the adjustment menu.
"Gain/Offset Adjust" will apeear on the OSD for a short
time during adjustment.
(3) After adjustment, "End of AD9883 Adjust" appears and
press the ADJ key to exit.
16. Adjusting the Actuator
(Initial Data: ACT Phase=220, ACT Gain=60)
16-1. Required Test Equipment
Service Remote Control
16-2. Preparation for Adjustment
(1) Connect a power source to the TV Set and turn TV set on.
(2) Using the Service Remote Control, enter from ADJ to
Actuator.
(3) ACT Gain and Phase is variable and the Tartan plaid of R,
G, B, W Horizontal Line adjust not distinguished not to be.
1) Adjust the Phase Mutation point of the Actuator.
2) Adjust the mutation quantity of the Actuator.
* The Tartan plaid of R, G, and B adjust is not visible.
But, when the R, G and B will not ballance, adjust the R and
G acheve ballance.
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