No. 51754
AV-29RF6
18
ADJUSTMENTS
CHECK ITEMS BEFORE ADJUSTMENTS
Item
Measuring
instrument
Test point
Adjustment part
Description
Check of B1
Power Supply
Signal
generator
DC voltmeter
TP-91(B1)
TP-E
[X Connector
on POWER
DEF PWB]
SCREEN VR
[ In HVT ]
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.
Check of High
Voltage
Signal
generator
High voltage
meter
CRT anode
SCREEN VR
[ In HVT ]
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.
FOCUS ADJUSTMENT
Item
Measuring
instrument
Test point
Adjustment part
Description
Adjustment of
FOCUS
Signal
generator
FOCUS 1 [In HVT]
FOCUS 2
[CRT SOCKET PWB]
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.
FOCUS 2
FOCUS 1
Summary of Contents for AV28R100EKS
Page 67: ...AV 29RF6 AV 29RF6 No 51754 No 51754 3 2 5 2 6 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM ...
Page 68: ...AV 29RF6 AV 29RF6 No 51754 No 51754 4 2 7 2 8 ...
Page 69: ...AV 29RF6 AV 29RF6 No 51754 No 51754 5 54 1 2 9 2 10 POWER DEF PWB CIRCUIT DIAGRAM ...
Page 70: ...AV 29RF6 AV 29RF6 No 51754 No 51754 6 105 5 2 11 2 12 CRT SOCKET PWB CIRCUIT DIAGRAM ...
Page 71: ...AV 29RF6 AV 29RF6 No 51754 No 51754 7 103 7 2 13 2 14 FRONT CONTROL PWB CIRCUIT DIAGRAM ...
Page 72: ...AV 29RF6 AV 29RF6 No 51754 No 51754 8 2 15 2 16 AV SEL PWB CIRCUIT DIAGRAM ...
Page 73: ...AV 29RF6 AV 29RF6 No 51754 No 51754 9 FRONT 2 17 2 18 PATTERN DIAGRAMS MAIN PWB PATTERN ...
Page 74: ...AV 29RF6 AV 29RF6 No 51754 No 51754 10 FRONT TP E TP 91 B1 2 19 2 20 POWER DEF PWB PATTERN ...
Page 75: ...AV 29RF6 AV 29RF6 No 51754 No 51754 11 TOP 2 21 2 22 CRT SOCKET PWB PATTERN ...
Page 76: ...AV 29RF6 AV 29RF6 No 51754 No 51754 12 FRONT FRONT 2 23 2 24 FRONT CONTROL PWB PATTERN ...
Page 77: ...AV 29RF6 AV 29RF6 No 51754 No 51754 13 TOP 29RF6 HSAE VP0007 DP6053 2 25 AV SEL PWB PATTERN ...
