1-34 (No.YA093)
4.8
ADJUSTMENT PROCEDURE
4.8.1 CHECK ITEM
4.8.2 FOCUS
4.8.3 HORIZONTAL FREQUENCY
Item
Measuring
instrument
Test point
Adjustment part
Description
B1 VOLTAGE
Signal
generator
DC voltmeter
S1 connector
1-pin: TP-E
5-pin: TP-91
[POWER &
DEF PWB]
(1) Receive the black and white signal (color off).
(2) Connect the DC voltmeter to the TP-E and TP-
91(B1) of S1 connector.
(3) Confirm that the voltage is DC140V±2.5V.
HIGH VOLTAGE
HOLD DOWN
Resistor
[27.0k
Ω
±1%]
S1 connector
2-pin : X-RAY2
3-pin : X-RAY1
[POWER &
DEF PWB]
• After reparing the high voltage hold down circuit. This
circuit shall be checked to operate correctly.
(1) Turn the power switch to on.
(2) Refer to the figure, connect the resistor 27.0k
Ω
±1%
between S1 connector 2-pin and 3-pin.
(3) Make sure that the screen picture disappeares.
(4) Disconnect the power plug.
(5) Remove the resistor.
(6) Again connect the power plug.
(7) Turn the power switch to on.
(8) Make sure that the normal picture is displayed on the
screen.
HVT
TP-E
TP-91
RESISTOR
S1 CONNECTOR
X RAY
DETECT
3
4
5
2
1
5
27.0 k 1%
Item
Measuring
instrument
Test point
Adjustment part
Description
FOCUS
Signal
generator
Remote
control unit
FOCUS VR(H)
FOCUS VR(V)
[HVT]
(1) Receive the cross-hatch signal.
(2) While watching the screen, adjust the FOCUS
VR(H) to make the horizontal lines as fine and sharp
as possible.
(3) Then adjust the FOCUS VR(V) to make the vertical
lines as fine and sharp as possible.
(4) Make sure that when the screen is darkened, the
lines remain in good focus.
FOCUS VR(H)
FOCUS VR(V)
SCREEN
H
V
FOCUS
SCREEN
Item
Measuring
instrument
Test point
Adjustment part
Description
H. FREQUENCY
Signal
generator
Remote
control unit
[1.PICTURE/SOUND]
D15: H. FREQ.
D18: (Not display)
(DEF RST OUT)
(1) Receive the any broadcast.
(2) Select 1.PICTURE/SOUND from the SERVICE MODE.
(3) Preset the value from 0 to 1 for the < D18 > (DEF
RST OUT).
(4) Adjust the < D15 >(H. FREQ.) so that an optimum
horizontal synchronization is obtained.
(5) Press [MUTING] key to memorize the set value.
(6) Set the ASPECT to 16 : 9 mode.
(7) Memorize the same value on 16 : 9 mode as will.
(8) After adjustment, return the value from 1 to 0 for the
< D18 >.
(9) Press the [MUTING] key to memorize the set value.
Содержание AV-32S565 Series
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