Adjustment; Adjustment Conditions And Precautions; Main Adjustments; Adjustment Method - HP S7650 Service Manual

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.
1
2
3
4
5
FUNCTION ADJ

4-3 Adjustment Method

1. B + & HV voltage adjustment:
A. Chroma-2000 Signal generator or PC equivalent set mode 1, VGA 640X480 pattern 1.0 .
B. Connect a DC Volt meter between TP902 and ground, then adjust VR902 to be 54.5.0 VDC for CPT
CRT
2. 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 "MORIE" function, then press the SELEC Key. While do not release the
SELEC 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.
Function
B + ADJ
SCREEN ADJ
FOCUS ADJ
ABL ADJ
-MENU
- DOWN (-)
- UP
SELET
(The OSD menu for factory preset)
Location
PCB - MAIN
FLY BACK TRANS
FLY BACK TRANS
PCB - MAIN
PCB - MAIN
PCB - MAIN
(+) PCB - MAIN
PCB - MAIN
9
HP S7650
Designation
VR902
T402
T402
IC101
<SW101>
<SW103>
<SW102>
<SW104>