JVC AV-21RM4SE Service Manual page 12

AV-25BT6ENS
AV-25BT6ENB
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 s ure to use an IC containing this (initial
value) data.
2. Memory IC replacement procedure
(1) Power off
Switch off the power and disconnec t 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 s witch on the
power.
(4) SERVICE MENU setting
1) Press MENU key and, while the displayed MENU
screen, press 4, 7, 2, 5 key on the remote control unit or
press MUTING key and INFORMATION key at the
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 STANDARD key to exit SERVICE MENU.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S
GUIDE) and s et the receive channels (Channels Preset) as
described.
(6) User settings
Check the us er setting items acc ording to after page.
Where these do not agree, refer to the OPERATING
INSTRUCT IONS (USER'S GUIDE) and set the items as
described.
8
SERVICE MENU SELECT KEY
MU TING
INFORMATION
ITEM
SELECT(▲)
VALUE
SELECT(－)
FUNCT ION
No. 52056
SERVICE MENU
Fig.1
POWER
NUMBER
STANDARD
COLOUR key
MENU
VALUE
SELECT(＋)
ITEM
SELECT(▼)
Fig.2