JVC LT-26C31BJE Service Manual page 16

3.2 REPLACEMENT OF MEMORY IC
This unit uses the nonvolatile memory IC.The memory IC memories data for video and deflection circuits. To replace the memory IC
without the data written, malfunctions might occurred while power is on, and the normal image might not appear. When replacing the
memory IC, be sure to use the IC written with the initial values of data.
3.2.1 PROCEDURE FOR REPLACING THE MEMORY IC
(1) Switch the power off and unplug the power cord from the
wall outlet.
(2) Replacing the memory IC. [Be sure to use the IC written
with the initial values of data]
(3) Plug the power cord into the wall outlet and switch the
power on.
(4) Check and setting of SYSTEM CONSTANT SET
a) Press the [INFORMATION] key and [MUTING] key
on the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See
Fig.1)
b) In the SERVICE MENU, press the [INFORMATION]
key and [MUTING] key simultaneously.
Then, the SYSTEM CONSTANT SET screen will be
displayed. (See FIg.2)
c) Check whether the setting value of the SYSTEM
CONSTANT SET is the same as these indicated in
Table 1.
d) Press the [INFORMATION] key twice to return to the
normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS and set the
receive channels.
(6) User setting
Memories the user setting items.The [USER SETTINGS
OF MENU] setting is as next page.
(7) Setting of SERVICE MENU
Check the setting items in the SERVICE MENU, set if
necessary.For setting method, please refer to the
[ADJUSTMENT PREPARATION]
PROCEDURE] of ADJUSTMENT section.
3.2.2 SETTING OF THE SYSTEM CONSTANT SET
Setting item
DESTINATION
3.2.3 FACTORY SHIPMENT SETTING
3.2.3.1 USER SETTING OF SWITCHS ON REMOTE CONTROL UNIT
Setting item
POWER OFF
CHANNEL PR1
PRESET CHANNEL Refer to OPERATION INSTRUCTIONS
VOLUME 10
ZOOM PANORAMIC
3D SOUND OFF
1-16 (No.YA014)
to [ADJUSTMENT
ASIA / EURO
Setting value
Table 2
SERVICE MENU SCREEN SERVICE MENU SCREEN
1. IF
3. AUDIO
5. VSM PRESET
7. VNR
9. SHIPPING (OFF)
1-9 : SELECT
SYSTEM CONSTANT SET SCREEN SYSTEM CONSTANT SET SCREEN
1. DESTINATION
-/+
Setting content
Table 1
SERVICE MENU
2. V/C
4. DD/CM
6. STATUS
8. IP
0. BUS FREE
i : EXIT
Fig.1
SYSTEM CONSTANT SET
EURO
OK
: STORE i : EXIT
Fig.2
Setting value
EURO