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AV-29RF6
ADJUSTMENTS
CHECK ITEMS BEFORE ADJUSTMENTS
Measuring
Item
instrument
Check of B1
Signal
generator
Power Supply
DC voltmeter
Check of High
Signal
generator
Voltage
High voltage
meter
FOCUS ADJUSTMENT
Measuring
Item
instrument
Adjustment of
Signal
generator
FOCUS
FOCUS 2
FOCUS 1
18
Test point
Adjustment part
TP-91(B1)
SCREEN VR
TP-E
[ In HVT ]
[X Connector
on POWER
DEF PWB]
CRT anode
SCREEN VR
[ In HVT ]
Test point
Adjustment part
FOCUS 1 [In HVT]
FOCUS 2
[CRT SOCKET PWB]
No. 51754
Description
1. Input the black and white signal.
2. Select 2. V/C from the SERVICE MENU.
3. Select 1. CUT OFF with MENU UP / DOWN key.
4. Show one horizontal line by pressing the 1 key.
5. Turn the SCREEN VR until not to display the one 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 horizontal line faintly,
and cancel the horizontal line by pressing the 2 key.
1. Input the black and white signal.
2. Select 2. V/C from the SERVICE MENU.
3. Select 1. CUT OFF with MENU UP / DOWN key.
4. Show one horizontal line by pressing the 1 key.
5. Turn the SCREEN VR until not to display the one 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 horizontal line faintly,
and cancel the horizontal line by pressing 2 key.
Description
1. Input the cross-hatch signal.
2. By turning the FOCUS 1 VR, adjust the picture so that the 7th
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.
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