AV28WT5EPS AV24WT5EPS
AV28WT5EIS AV24WT5EIS
AV28WT5EKS AV24WT5EKS
ADJUSTMENTS
CHECK ITEM
Measuring
ItemTest pointAdjustment partDescription
instrument
Check of B1SignalTP-91(B1)1. Receive a any broadcast.
Power SupplyGeneratorTP-E(####)2. Push the ?ZOOM? key and select the FULL mode.
[X connector3. Select 2. V/C from the SERVICE MENU.
DC voltmeteron POWER4. Select 1. CUT OFF with Function UP / DOWN key.
DEF PWB]5. Show one horizontal line with the 1 key.
Remote6. Turn the SCREEN VR, the whole black screen display.
Control unit7. Connect a DC voltmeter to TP-91(B1) and TP-E(#).
8. Make sure that the voltage is DC144.5 ?2.0V.
9. Readjust the SCREEN VR to appear the horizontal line faintly,
and cancel the horizontal line to press the 2 key.
Check of HighSignalCRT anode1. Receive a any broadcast.
VoltageGenerator2. Push the ?ZOOM? key and select the FULL mode.
3. Select 2. V/C from the SERVICE MENU.
Chassis GND
4. Select 1. CUT OFF with Function UP / DOWN key.
DC volunteer
5. Show one horizontal line with the 1 key.
6. Turn the SCREEN VR, the whole black screen display.
Remote
7. Connect a DC voltmeter to CRT ANODE and chassis GND.
+1kV
Control unit8. Make sure that the voltage is DC 30.0kV -1.5k V .
9. Readjust the SCREEN VR to appear the horizontal line faintly,
and connect the horizontal line to press 2 key.
ADJUSTMENT OF FOCUS
Measuring
ItemTest pointAdjustment partDescription
instrument
Adjustment ofSignalFOCUS VR1. Receive a cross-hatch signal. Select FULL mode.
FOCUSgenerator[In FBT]
2. While watching the screen, adjust the FOCUS VR to make the
vertical and horizontal lines as fine and sharp as possible.
3. Make sure that when the screen is darkened, the lines remain
in good focus.
FOCUS VR
SCREEN VR
No. 5177623 |