JVC BM-H2000PN Service Manual

BM-H2000PN
Item
Test equipment
Adjustment
Test points losationa
Adjustment procedure
t=
APG (PAL)
Pulse cross
Oscilioscope
Signal generator
{Color bar, split
color bar)
10 KQ resistor
Shorting fixture
Signal generator
(Color bar
NTSC/PAL)
TP-48
TP-49
224(4.43APC)
R210(DL AMP)
C206(LISSAJOUS
3)
207(LISSAJOUS
[Signal PWB}
R570(V.SYNC)
[Signal PWB]
Connect a 70 K@ resistor between 16201 pin 13,
and +B (12 V).
. Connect a shorting fixture between IC201 pin 14
and ground.
. Adjust to synchronize the color bar with C224,
. Remove the resistor and shorting fixture.
. Connect an oscilloscope to TP-48 and TP~49
and display X-Y coordinates.
. Adjust R210 and C206 to obtain the waveform
indicated in the figure. If inadequate, adjust
207 and C209.
—_
Adjust
. Supply a PAL split color bar input and adjust
C224 to minimize coloration in the R-Y and B-Y
components.
. Set the pulse cross switch to on.
.. Adjust R570 to eliminate luminance and burst
signal variation in the V blanking period.
3. Supply a PAL color bar input.
. Confirm absence of luminance and burst signal
variation in the V blanking period.
. Again supply an NTSC color bar input and again
confirm absence of luminance and burst signal
variation in the V blanking period.
. If variation is present, again adjust R570.
. Set the pulse cross switch to off.
Chroma and
phase
(Video input,
NTSC)
Oscilloscope
Signal generator
(Color bar)
1P-B
[CRT socket
PWB]
$02(CHROMA)
$03(PHASE)
[SERVICE MENU]
. Supply an NTSC color bar to Video A.
Set the menu Filter Select to Notch.
. Connect oscilloscope to TP-B.
. Alternately adjust $02 and S03 to obtain a
straight fine waveform:
. Set Filter Select to Comb.
38 (No.51042)

JVC BM-H2000PN Specifications

General

Brand	JVC
Model	BM-H2000PN
Category	Monitor
Language	English