No. 51776
AV28WT5EPS AV24WT5EPS
AV28WT5EIS AV24WT5EIS
AV28WT5EKS AV24WT5EKS
15
REPLACEMENT OF MEMORY ICs
1. Memory ICs
This TV use memory ICs. In the memory ICs, there are memorized data
for correctly operating the video and deflection circuits. When replacing
memory ICs, be sure to use ICs written with the initial values of data.
2. Procedure for replacing memory ICs
PROCEDURE
(1)
Power off
Switch the power off and unplug the power cord from the outlet.
(2)
Replace ICs
.
Be sure to use memory ICs written with the initial data values.
(3)
Power on
Plug the power cord into the outlet and switch the power on.
(4)
Check and set SYSTEM CONSTANT SET:
*
**
*
It must not adjust without signal.
1) Press the INFORMATION key and the MUTING key of the
REMOTE CONTROL UNIT simultaneously.
2) The SERVICE MENU screen of Fig. 1 will be displayed.
3) While the SERVICE MENU is displayed, press the
INFORMATION key and MUTING key simultaneously, and the
SYSTEM CONSTANT SET screen of Fig. 2 will be displayed.
4) Check the setting values of the SYSTEM CONSTANT SET of
Table 1. If the value is different, select the setting item with the
FUNCTION UP/DOWN key, and set the correct value with the
FUNCTION -/+ key.
5) Press the MENU key to memorize the setting value.
6) Press the INFORMATION key twice, and return to the normal
screen.
(5)
Setting of receive channels
Set the receive channel.
For setting, refer to the OPERATING INSTRUCTIONS.
(6)
User settings
Check the user setting values of Table 2, and if setting value is
different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
(7)
Setting of SERVICE MENU
Verify the setting items of the
SERVICE MENU
of Table 3, and reset
where necessary.
For setting, refer to the SERVICE ADJUSTMENTS.
Names of key
i
i
i
i
▼
▼
▼
▼
INFORMATION
MUTING
FUNCTION UP/DOWN
MENU
FUNCTION -/+
key
OK
NAME OF REMOTE CONTROL KEY
SERVICE MENU
1. IF
2. V/C
3. AUDIO
4. DEF
5. VSM PRESET 6. VPS
7. AUTO PROGRAM (OFF)
1-7 : SELECT
: EXIT
Fig.1
SYSTEM CONSTANT SET
MODEL=JK_EURO
(V
*.****
)
JVC JK-II EURO V00
COUNTRY
:
**
INCH
:
**
MODEL
: WT
- +
: STORE
: EXIT
******** - *****
OK
Fig.2
