JVC AV-48WP30 Service Manual page 17

AV-48WP30
MEMORY IC REPLACEMENT
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
value) data.
2. Memory IC replacement procedure
(1) Power off
Switch off the power and disconnect the power cord from
the wall outlet.
(2) Replace the memory IC
Initial value must be entered into the new IC.
(3) Power on
Connect the power cord to the wall outlet and switch on the
power.
(4) SERVICE MENU setting
1) Press SLEEP TIMER key and, while the indication of
SLEEP TIMER 0 MIN is being displayed, press
DISPLAY key and VIDEO STATUS key on the remote
control unit (Fig.2) simultaneously.
2) The SERVICE MENU screen of Fig.1 is displayed.
3) Verify what to set in the SERVICE MENU, and set
whatever is necessary (Fig.1).
Refer to the SERVICE ADJUSTMENT for setting.
4) Press the EXIT key twice to return normal screen.
(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.
16
SERVICE MENU
1.PICTURE/SOUND 7.I2C BUS
2.YC SEP
3.LOW LIGHT
4.HIGH LIGHT
5.RF AFC
6.
SERVICE MENU SELECT KEY
DISPLAY
SLEEP
TIMER
VIDEO
STATUS
MEMORY
(MUTING)
VALUE
SELECT(－)
FUNCTION
MENU
No. 51914
SERVICE MENU
8.PP
9.IP
0.SELF-CHK
Fig.1
POWER
NUMBER
ITEM
SELECT(▲)
VALUE
SELECT(＋)
EXIT
ITEM
SELECT(▼)
Fig.2