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AV-25PX
REPLACEMENT OF MEMORY ICs
1. Memory ICs
This model uses memory ICs. This memory IC data are for proper
operation of the video and deflection circuits. When replacing, be sure to
use ICs written with the initial values of data.
2. Procedure for replacing memory ICs
(1) Power off
Switch off the power and disconnect the power plug from the wall outlet.
(2) Replace the memory IC
Be sure to use memory ICs written with the initial data values.
(3) Power on
Connect the power plug into the wall outlet and switch power on.
(4) Check and set SYSTEM CONSTANT SET
It must not adjust without signal.
1) Should be open the door on the surface of the remote control unit. Then DVD
control buttons and PICTURE MODE button will be appeared.
2) Press the DISPLAY key and the PICTURE MODE key of the REMOTE
CONTROL UNIT simultaneously.
3) The SERVICE MENU screen of Fig. 1 will be displayed.
4) While the SERVICE MENU is displayed, again press the DISPLAY key and
PICTURE MODE key simultaneously, and the SYSTEM CONSTANT SET
screen of Fig. 2 will be displayed.
5) Check the setting values of the SYSTEM CONSTANT SET of Table 1 in page
later. If the value is different, select the setting item with the MENU UP/DOWN
key, and set the correct value with the MENU LEFT/RIGHT key.
6) Press the OK key to memorize the setting value.
7) Press the DISPLAY key twice, and return to the normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS, and set the receive channels as
described.
(6) User settings
Check the user setting items according to Table 2. Where these do not agree, refer
to the OPERATING INSTRUCTIONS.
(7) SERVICE MENU setting
Verify what to see in the SERVICE MENU, and set what ever in necessary.
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
OK
MENU
LEFT/RIGHT
8
PICTURE
MODE
MENU
UP/DOWN
DISPLAY
No. 51752
SERVICE MENU
SERVICE MENU
1. IF
2. V/C
3. AUDIO
4. DEF
5. VSM PRESET
6. WB PRESET
7. AUTO PROGRAM (OFF)
DISP
1-7 : SELECT
: EXIT
JVC JK ASIA V**
M*******-*****
Fig.1
SYSTEM CONSTANT SET
MODEL=JK_ASIA(V*.***)
COLOUR
: MULTI
MSP
: NO
SUPER BASS
: NO
CENTER SPEAKER
: NO
TEXT
: NO
DISP :EXIT
OK :STORE
SYSTEM CONSTANT(1/3)
SYSTEM CONSTANT SET
MODEL=JK_ASIA(V*.***)
BLUE BACK MUTE
: NO
VOLUME LIMIT
: YES
COLOUR AUTO
: NO
TILT
: NO
C-TRAP
: 1
DISP :EXIT
OK :STORE
SYSTEM CONSTANT(2/3)
SYSTEM CONSTANT SET
MODEL=JK_ASIA(V*.***)
E.M.C.
: NO
N/S WHITE BACK
: NO
7 LED SPEED
: 00
DISP :EXIT
OK :STORE
SYSTEM CONSTANT(3/3)
Fig.2
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