Video - JVC PD-35DX Service Manual

PD-35DX
2.6 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.
2.6.1 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)
a) In the SERVICE MENU, press the [INFORMATION] key
and [MUTING] key simultaneously.
Then, the SYSTEM CONSTANT SET screen will be
displayed. (See FIg.2)
a) Check whether the setting value of the SYSTEM
CONSTANT SET is the same as these indicated in
Table 1.
a) 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 [SETTINGS OF THE LAST MEMORY FACTORY
SHIPMENT] setting is as next page.
(7) Setting of SERVICE MENU
Check the serviceman setting items in the SERVICE
MENU, set if necessary.
For setting method, please refer to the [ADJUSTMENT
PREPARATION] to [ADJUSTMENT PROCEDURE] of
ADJUSTMENTS section.
2.6.2 SETTING OF THE SYSTEM CONSTANT SET
Setting item
DESTINATION
1-14 (No.52089)
Setting content
ASIA / EURO
Table 1
SERVICE MENU SCREEN SERVICE MENU SCREEN
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DD/CM
5. VSM PRESET 6. STATUS
7. VNR 8. IP
9. SHIPPING (OFF) 0. BUS FREE
1-9 : SELECT i : EXIT
Fig.1
SYSTEM CONSTANT SET SCREEN SYSTEM CONSTANT SET SCREEN
SYSTEM CONSTANT SET
1. DESTINATION
OK
-/+ : STORE
Fig.2
Setting value
ASIA
ASIA
i : EXIT