JVC AV-29ST16, Руководство по обслуживанию

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1-20 (No.YA469)
4.8.3 FOCUS
4.8.4 DEFLECTION CIRCUIT
• The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
• When performing deflection circuit adjustment, adjusts PAL signal (fv: 50 Hz) in 4:3 mode and 16:9 mode respectively, and adjust
the NTSC signal (fv: 60 Hz) similarly.
NOTE:
Proceed to the following adjustment after having completed the adjustments of SUB BRIGHT and SUB PICTURE.
„ COMPRESS: OFF (4:3)
Item
Measuring
instrument
Test point Adjustment part Description
FOCUS Signal
generator FOCUS VR
[In HVT] (1) Receive the cross hatch signal.
(2) While looking at the screen, adjust the
FOCUS VR
to the vertical and horizontal lines will be thinnest
and sharpest.
(3) Make sure that the picture is in focus even when the
screen gets darkened.
Item
Measuring
instrument
Test point Adjustment part Description
V. SLOPE Signal
generator
Remote
control unit
[4. DEF]
2. V-SLOPE PAL V. SLOPE
(1) Receive a circle pattern signal of vertical frequency
50Hz (PAL).
(2) Select 4. DEF from the SERVICE MODE.
(3) Select <2. V-SLOPE> .
(4) Set the initial setting value of <2. V-SLOPE> .
(5) Adjust <2. V-SLOPE> to make " A = B ".
(6) Press the [OK] key to memorize the set values.
NTSC V. SLOPE
(1) Receive a circle pattern signal of vertical frequency
60Hz (NTSC).
(2) Follow the same step 2 to 6 as in PAL V. SLOPE.
V. POSITION Signal
generator
Remote
control unit
[4. DEF]
1. V-SHIFT PAL V. POSITION
(1) Receive a circle pattern signal of vertical frequency
50Hz (PAL).
(2) Select 4. DEF from the SERVICE MODE.
(3) Select <1. V-SHIFT> .
(4) Set the initial setting value of <1. V-SHIFT> .
(5) Adjust <1. V-SHIFT> to make " A = B ".
(6) Press the [OK] key to memorize the set values.
NTSC V. POSITION
(1) Receive a circle pattern signal of vertical frequency
60Hz (NTSC).
(2) Follow the same step 2 to 6 as in PAL V. POSITION.
B
A
Blanking line
A
B