Focus Adjustment - Emerson CR202EM8 Service Manual

8. Adjust Red and Blue color so that the temperature
becomes 9200K (x: 286 / y: 294)±3%.
9. At this time, Re-check if Horizontal line is white. If
not, Re-adjust Cut-off Adjustment until the
Horizontal Line becomes pure white.
10. Turn off and on again to return to the normal
mode. Receive APL 100% white signal and Check
Chroma temperatures become 9200K (x: 286 / y:
294)±3%.
Note: Confirm that Cut Off Adj. is correct after this
adjustment, and attempt Cut Off Adj, if
needed.
14. YUV Pedestal Adjustment
Purpose: To adjust the pedestal level of YUV input.
Test Point Adj. Point
[CH o / p]
Screen
buttons
Tape M. EQ.
--- Color Analyzer
Figure
1. Enter the Service mode in DTV mode.
2. Press [3] button on the service remote control unit.
The screen changes white 50% automatically.
(Display changes "U-PED" and "Y-PED" cyclically
when [3] button is pressed).
3. Press [CH o / p] buttons on the service remote
control unit so that the Chroma temperature
becomes 9200K ±3%.
Mode Input
DTV ---
Spec.
See below
Color Analyzer
Fig. 4
15. Sub-Brightness Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is
incorrect, proper brightness cannot be obtained by
adjusting the Brightness Control.
Test Point Adj. Point
[CH o / p]
---
buttons
Tape M. EQ.
Pattern
---
Generator
White
Note: IQW Setup level --- 7.5 IRE
Use service remote control unit
1. Enter the Service mode. (See page 5-1.) Then
input IQW signal from RF Input.
2. Press [MENU] button on the service remote
control unit and Select "BRT" mode. (Display
changes "BRT," "CNT," "CLR," "S-CLR," "C-CLR,"
"TNT," "V-TNT," "S-TNT," "C-TNT," "SHARP," "S-
SRP," and "C-SRP," cyclically when [MENU] button
is pressed). Press [CH o / p] buttons so that the
bar is just visible (See above figure).
3. Turn the power off and on again. (Main power
button on the TV unit.)

16. Focus Adjustment

Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is
incorrect, blurred images are shown on the display.
Test Point Adj. Point
--- Focus Control
Tape M. EQ.
Pattern
---
Generator
Note: Focus VR (FBT) --- Main CBA,
FBT = Fly Back Transformer
1. Operate the unit more than 30 minutes.
5-6
Mode Input
RF IQW
Spec.
See below
Figure
Black
This bar
just
visible
Fig. 5
Mode Input
--- Monoscope
Spec.
See below
P7150EA