JVC AV-20N8(BK) Service Manual page 23

VSM PRESET ADJUSTMENT
Measuring
Item
instrument
Setting of Remote
VSM control unit
PRESET
SUB MENU 3. VSM PRESET
BRIGHT
TINT
COLOUR
BRIGHT
CONT.
SHARP
a : SELECT
− / + : OPERATE
A2 SIF/DET ADJUSTMENT
Measuring
Item
instrument
Adjustment Oscillo-
of scope
A2 SIF/DET
Remote
control
unit
Test point Adjustment part
TINT
COLOUR
BRIGHT
CONT.
SHARP
DISP : EXIT
Test point Adjustment part
Audio Output T601
Terminal [A2 PWB]
L or R
(VSM PRESET)
1. Select 3. VSM PRESET from the SERVICE MENU.
2. Select BRIGHT with the PICTURE MODE key.
3. Adjust the MENU a key and MENU − or + key to reset the
set values of TINT ~ SHARP to the values shown in the table.
4. Respectively select the VSM PRESET mode for SOFT and
STANDARD, and make similar adjustment as in 3 above.
5. Press the DISPLAY key twice to return to the normal screen.
[Setting Values for SUB MENU 3. VSM PRESET]
VSM preset
VSM mode
Setting item
TINT
SETTING VALUE
COLOUR
SETTING VALUE
BRIGHT
SETTING VALUE
CONT.
SETTING VALUE
SHARP
SETTING VALUE
: Do not adjust.
1. Connect an oscilloscope to the Audio Output Terminal L or R
on the rear of the TV.
2. Receive a Germany Multiple sound signal.
3. Set the TV to A2 or Bilingual mode with the I/II key on the
screen display II.
4. Turn T601 so that the audio waveform on the oscilloscope is
maximum in amplitude and perpendicularly symmetrical as
shown below:
No. 56030
Description
BRIGHT STANDARD SOFT
b b b b b b b b b b
15
b b b b
b b b b b b
15
b b b b b b b b b b
15
30 19 14
b b b b b
20 15
Description
Maximum
AV-20N8
23