JVC AV-2100QE Service Manual page 7

3.2 MEMORY IC REPLACEMENT
• This model uses the memory IC.
• This memory IC stores data for proper operation of the video and drive circuits.
• When replacing, be sure to use an IC containing this (initial value) data.
3.2.1 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug from the
AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting
values.
3. Power on
Connect the power plug to the AC outlet and switch on the
power.
4. System constant check and setting
• It must not adjust without adjustment signals.
(1) Press the [DISPLAY] key and the [PICTURE MODE]
key of the REMOTE CONTROL UNIT simultaneously.
(2) The SERVICE MENU screen of Fig. 1 will be displayed.
(3) While the SERVICE MENU is displayed, again press the
[DISPLAY] key and the [PICTURE MODE] key
simultaneously, and the SYSTEM CONSTANT SET
screen of Fig. 2 will be displayed.
(4) Check the setting values of the SYSTEM CONSTANT
SETTING. If the value is different, select the setting item
with the [MENU / ] key, and set the correct value with
the [MENU - / +] key.
(5) Press the [DISPLAY] key twice, and return to the normal
screen.
5. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS and set the
receive channels (Channels Preset) as described.
6. User settings
Check the user setting items according to the given in page
later.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS and set the items as described.
7. SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is
necessary (Fig.1).
Refer to the SERVICE ADJUSTMENT for setting.
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
PICTURE OFF
TIMER
MODE key
OK key
MENU
MENU
/ key
OK
DISPLAY key
SERVICE MENU
1.IF 2.V/C
3.DEF 4.VSM W/B
5.PRESET
6.PLUG & PLAY (OFF)
7.HOTEL MODE (OFF)
1-7 : SELECT DISP : EXIT
Fig.1
SYSTEM CONSTANT
SYSTEM CONSTANT
SYSTEM
LANGUAGE
BLUE BACK MUTE
COLOR AUTO
BILINGUAL
EXT BPF
PICTURE BOOSTER : NO
: SELECT
/
/ : OPERATE
Fig.2
ECO
NUMBERS
key
MENU
/ key
: TRIPLE
: E/R/U
: NO
: NO
: NO
: OFF
DISP : EXIT
(No.YA552)1-7