JVC AV-29QT4SU Service Manual page 6

3.2 REPLACEMENT OF MEMORY IC
3.2.1 MEMORY IC
This model use a memory IC. This memory IC stores data for proper operation of the video and deflection circuits.
When replacing, be sure to use an IC containing this (initial vaue)data.
3.2.2 PROCEDURE FOR REPLACING MEMORY IC
PROCEDURE
1. Power off
Switch the power off and unplug the power cord from the outlet.
2. Replace IC.
Be sure to use memory IC written with the initial data values.
3. Power on
Plug the power cord into the outlet and switch the power on.
4. SERVICE MENU setting
(1) Press [MUTING] key and [INFORMATION] key at the
simultaneously.
(2) The SERVICE MENU screen of Fig. 1 will be
displayed.
(3) Verify what to set in the SERVICE MENU, and set
whatever is necessary. Refer to the SERVICE AD-
JUSTMENT for setting.
(4) Press the [MENU] key to exit SERVICE MENU.
5. Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S
GUIDE) and set the receive channels (Channels Preset) as
described.
6. User settings
Check the user setting items according to after page.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS (USER'S GUIDE) and set the items as
described.
1-6 (No.YA085C)
AK49-0.0.104-JVC-GRA
224 SAVEFS 000
225 LOADFS 000
226 DCXO 079
227 DCXOA OFF
001 FAPS OFF
002 ISPM OFF
003 INIT OFF
005 AGCSPD 001
006 AGCTO 033
SERVICE MODE SCREEN
Fig.1
SERVICE MENU SELECT KEY
MUTING key
MENU key
UP / DOWN
[ ]/[ ] key
LEFT / RIGHT
[ ]/[ ] key
INFORMATION key
Fig.2