AV-29RS
ADJUSTMENTS
CHECK ITEMS BEFORE ADJUSTMENTS
Measuring
ItemTest pointAdjustment partDescription
instrument
Check of B1SignalTP-91(B1)1. Input the black and white signal.
Power SupplygeneratorTP-E(!!!!)2. Select 2. V/C from the SERVICE MENU.
[X Connector3. Select 1. CUT OFF with MENU UP / DOWN key.
DC voltmeter
on POWER4. Show a horizontal line by pressing the 1 key.
DEF PWB]5. Turn the SCREEN VR until not to display the a horizontal line.
6. Connect the DC voltmeter to TP-91(B1) and TP-E(!).
7. Make sure that the voltage is DC134.0 ?2.0V.
8. Readjust the SCREEN VR to appear the a horizontal line faintly,
and cancel the a horizontal line by pressing the 2 key.
Check of HighSignalCRT anode1. Input the black and white signal.
Voltagegenerator2. Select 2. V/C from the SERVICE MENU.
3. Select 1. CUT OFF with MENU UP / DOWN key.
High voltage
4. Show a horizontal line by pressing the 1 key.
meter
5. Turn the SCREEN VR until not to display the a horizontal line.
6. Connect a High voltage meter to CRT ANODE.
7. Make sure that the voltage is DC 32.0kV?1.5kV.
8. Readjust the SCREEN VR to appear the a horizontal line faintly,
and cancel the a horizontal line by pressing 2 key.
FOCUS ADJUSTMENT
Measuring
ItemTest pointAdjustment partDescription
instrument
Adjustment ofSignalFOCUS 1 [In HVT]1. Input the cross-hatch signal.
FOCUSgenerator
2. By turning the FOCUS 1 VR, adjust the picture so that the 7th
FOCUS 2 [In HVT]horizontal line from the upper side of the cross-hatch picture
becomes thinnest.
3. By turning the FOCUS 2 VR, adjust the picture so that the 7th
vertical line from the left side may become uniform at the line
center and its periphery.
4. Carry out adjustment by repeating the steps 2 and 3 above.
5. Make sure that when the screen is darkened, the lines remain in
good focus.
FOCUS 2
FOCUS 1
18No. 51756 |