JVC AV24WT5EIS, Service Manual

Page: 28 / 39

No. 51776
AV28WT5EPS AV24WT5EPS
AV28WT5EIS AV24WT5EIS
AV28WT5EKS AV24WT5EKS
28
Item
Measuring
instrument
Test point Adjustment part Description
5.COLOUR
(PAL
～ ～ ～ ～
NTSC)
[Method of adjustment using measuring instrument]
PAL COLOUR (PAL COLOUR)
1. Receive a PAL full field colour bar signal (75% white).
2. Select 2.V/C from the SERVICE MENU.
3. Select 5.COLOUR with the FUNCTION UP/DOWN key.
4. Set the initial setting value of PAL COLOUR with the
FUNCTION - or + key.
5. Connect the oscilloscope between TP-47B and TP-E(
#
).
6. Adjust PAL COLOUR and bring the value of (A) in the
illustration to the values as shown given billow (Voltage
difference between white (W) and blue (B)).
7. Press the MENU key and memorize the setting value.
SECAM COLOUR
Only
AV28WT5EPS
AV24WT5EPS
(SECAM COLOUR)
1. Receive a SECAM full field colour bar signal(75% white).
2. Set the initial setting value of SECAM COLOUR with the
FUNCTION -/+ key.
3. Adjust SECAM COLOUR and bring the value of (A) in the
illustration to the values as shown given billow (Voltage
difference between white (W) and blue (B)).
4. Press the MENU key and memorize the setting value.
(NTSC 3.58 COLOUR)
1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field
colour bar with 75% white) from the EXT terminal.
2. Set the initial setting value of NTSC 3.58 COLOUR with the
FUNCTION -/+ key.
3. Adjust NTSC 3.58 COLOUR and bring the value of (A) of the
illustration to 0V
W-B
.
4. Press the MENU key and memorize the setting value.
Adjustment
of SUB
COLOUR
Ⅱ Ⅱ Ⅱ Ⅱ
Signal
generator
Oscilloscope
Remote
control unit
TP-47B
TP-E(
# # # #
)
[CRT
SOCKET
PWB ]
NTSC COLOUR
(NTSC 4.43 COLOUR)
1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at
the respective values.
(+)
(-)
0
W Cy Mg B
(A)
MODEL VOLTAGE (W-B)
28” model +6V
24” model +4V
MODEL VOLTAGE (W-B)
28” model +6V
24” model +4V