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(No.YA318)1-37
4.6
ADJUSTMENT PROCEDURE
4.6.1 CHECK ITEMS
Item
Measuring
instrument
Test point
Adjustment part
Description
X-RAY
PROTECTOR
check
Resistor
[6.8k
Ω
±34
Ω
(1/4W) ]
S1 connector
2 pin : X-Ray2
3 pin : X-Ray1
[DEF/
CONVEGENCE
OUT PWB]
(1) Receive NTSC whole black signal.
(2) Connect resistor 6.8k
Ω
±34
Ω
(1/4W) between 2 pin
and 3 pin of the S1 connector.
(3) Make sure that the screen picture disappears.
(4) Unplug the power cord.
(5) Remove the resistor [6.8k
Ω
] from S1 connector.
(6) Again plug the power cord, make sure that the
normal picture is displayed on the screen.
HIGH VOLTAGE
check
Signal
generator
HV voltmeter
CRT anode
(1) Receive NTSC whole black signal.
(2) Connect the HV voltmeter between CRT anode and
GND.
(3) Check the high voltage DC 31.6kV+1.0kV / -1.5kV.
T502
FBT
CN008
X-RAY
RESISTOR
6.8K 34 1/4W
SERVICE CONNECTOR
TP-E
R561
R563
D561
D562
C311
R562
FR311
D311
B1
TP-91
R565
X-RAY2
1 2 3 4 5
X-RAY1
NC
TP-91B
139.5V
TP-E
( )
2
3
1
S1
CONNECTOR
S1
5
4
3
2
1
Содержание AV-48P776/H
Страница 1: ......
Страница 92: ... No YA318 2 4 ...
Страница 135: ...2 47 No YA318 PATTERN DIAGRAMS MAIN PWB PATTERN SOLDER SIDE ...
Страница 136: ... No YA318 2 48 FRONT ...
Страница 137: ...2 49 No YA318 MAIN PWB PATTERN PARTS SIDE ...
Страница 138: ... No YA318 2 50 FRONT ...