7. Geometry adjustment
Apply the Philips standard testing pattern signal in nominal status.
Enter D-mode page 3, adjusting the following data to get the picture have a appropriate centre, amplitude
and minimal distortion.
VPOS60 (Vertical Center
）
[Note: The vertical amplitude should be the same as the sample set.]
HIGH60 (Vertical Amplitude)
VLIN6 (Vertical Linearity
）
VSC60 (Vertical S-Correction
）
HPOS60 (Horizontal Center)
8. EHT/HEW ratio test
（
test with PC program
）
Instruments
：
EHT test meter
，
EHT test bar(1000:1)
，
adjustable power supply
，
virtual
DY( the same inductance value as CRT in production).
Input signal pattern
：
Black pattern
Required Data: EHT and HEW voltage when Ib=0;
(HEW voltage value is the DC voltage across C431).
Expected Result:
EHT/HEW
should match the requirements below
：
9. X-rays over protecting circuit test:
Turn on the TV and wait for the screen lighted up, then apply a 26V DC voltage across C431
，
the set
should enter protecting mode
，
or check X-ray protecting circuit.
Note:
X-rays over protecting function is activated
only when D-mode menu is closed.
Model CRT FBT
EHT(0uA)(KV) HEW(0Ua)(V)
RATIO
14DN2NYD 44-140FLP-IR1A 37-SC2502-07Q01 22.5
±
1.5 21.0
±
1.5 1071
±
3%
TTE Overseas Support Department
Summary of Contents for 14DN2NYD
Page 41: ...5 Block Diagram TTE Overseas Support Department...
Page 42: ...6 Schematic Diagram...
Page 43: ...7 PCB Layout...
Page 44: ......
Page 45: ...8 Explode View Diagram...
