Adjustment; Adjustment Conditions And Precautions; Main Adjustments; Adjustment Method - Philips 105G7 Series Service Manual

http://jdwxzlw.5d6d.com/?fromuser=华盛维修

4. ADJUSTMENT

4. 1 ADJUSTMENT CONDITIONS AND PRECAUTIONS

1. Approximately 30 minutes should be allowed for warm up before proceeding.
2. Adjustments should be undertaken only on those necessary elements since most of them have been
carefully preset at the factory.

4. 2 MAIN ADJUSTMENTS

NO. FUNCTION
1. 14.5V ADJ
2. B + ADJ
3. SCREEN ADJ
4. FOCUS ADJ
5. FUNCTION ADJ

4. 3 ADJUSTMENT METHOD

14.5V, B + & HV voltage adjustment:
A. Chroma-2000 Signal generator or PC equivalent set mode2:, VGA 640X480 pattern 1.0.
B. Connect a DC Volt meter between TP901 (or the equivalent point) and ground, then adjust VR901 to be
14.2VDC.
C. Connect a DC Volt meter between TP902 (or the equivalent point) and ground, then adjust VR902 to be
85 VDC.
Factory preset Timings Adjustment:
A. Press MENU Key to show OSD window press Up or Down Key to switch the functional controls.
B. Press the Up Key to select the "ZOOM" function, then press the MENU Key. While do not release the MENU Key
until the OSD window changed to the Factory preset window.
C. The Factory preset window contains the following functional controls. Select one of the control. Then press the
Up/Down Key to adjust its value for the optimum picture.
家电维修资料网，免费下载各种维修资料
-MENU
-UP
-DOWN
-EXIT
LOCATION
PCB - MAIN
PCB - MAIN
FLY BACK TRANS
FLY BACK TRANS
PCB - MAIN
PCB - MAIN
PCB - MAIN
PCB - MAIN
7
DESIGNATION
VR901
VR902
T402
T402
SW102
SW103
SW104
SW105