Parker TS2151, Service Manual

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5
Trape VS-CORE V-LIN
4. Checking point
4.1 High voltage check
Connect High Voltage meter between CRT second anode and GND.
1) Receive A7 signal, set user control to “STANDARD”, measure the high voltage value, the reading
should be 25.5 kV
±
1 kV
Set the brightness and contrast to minimum (zero beam current), measure the high voltage, the reading
should not exceed 32kV.
4.2 CRT filament voltage check
Receive A7 signal, set picture to “STANDARD”, use effective voltage meter to measure CRT filament
voltage, the reading should be (6.3
±
0.3) Vrms
4.3 X-ray protection check
1) Receive A7 signal, set user control to “vivid”.
2) Short circuit R309 (TP302, TP303), X-Ray protection circuit should function.
4.4 Picture and sound check
1) Receive standard TV signal.
2) Use picture control buttons to check color, contrast, brightness, sharpness, tint’s function.
3) Use sound control buttons to check volume control function.
4.5 Sub-brightness check
Receive A7 signal, set user control to “vivid”, picture bottom right side 2 lattices slightly light up.
4.6 Color purity and convergence check (in normal way)
4.7 AV terminals IN/OUT check
4.8 Y, Cb, Cr video and sound IN check .
4.8 Other buttons on the TV set and remote controller function check.
5 Ex-factory setting
5.1 picture menu
CONTRAST 45
BRIGHT 35
COLOR 30
TITN 0
SHARPNESS 30
PICTURE MODE STANDARD
5.2 Volulme: 30
5.3 Language: English
5.4 TV mode: channel 1
6 Factory menu
6.1 enter factory menu method
1) Press factory button to enter factory menu.
2) Press CH+ or CH- to select sub-menu and VOL+ or VOL- to enter.
3) Press MENU to exit.
With Remote Control
In TV state, press the " MENU " key, the main menu appears, then press the number
keys: " 2 " , " 5 " , " 8 " and " 0 "
6.2 the content of factory menu see table 1