(No. 52195) 1-9
3.2 REPLACEMENT OF MEMORY IC
3.2.1 MEMORY IC
This TV uses the following memory IC.
Memory IC: IC1702 on MAIN PW Board
The memory IC memorizes data for correctly operating the
video and deflection circuits. When replacing the memory
IC, be sure to use the same type IC written with the initial
values of data. In other words, use the specific IC listed in
“PRINTED WIRING BOARD PARTS LIST”. For its mounting
location, refer to “ADJUSTMENT LOCATIONS”.
3.2.2 PROCEDURE FOR REPLACING MEMORY IC
1. Power off
Switch the power off and unplug the power cord from
the wall outlet.
2. Replacing the memory IC
Replace the memory IC with new one. Be sure to use
the memory IC written with the initial data values.
3. Power on
Plug the power cord into the wall outlet and switch the
power on.
4. Check and setting of SYSTEM CONSTANT SET:
(1) Press the [DISPLAY] key and the [PICTURE MODE]
key on the remote control unit simultaneously.
The SERVICE MENU screen will be displayed.(See
Fig.1.)
(2) In the SERVICE MENU, press the [DISPLAY] key and
[PICTURE MODE] key simultaneously. Then, the
S Y S T E M C O N S TA N T S E T s c r e e n w i l l b e
displayed.(See Fig.2.)
(3) Check whether the setting values of the SYSTEM
CONSTANT SET are the same as those indicated
in Table1.
If the value is different, select the setting item with
the MENU [
!
]/[
"
] key, and set the correct value
with the MENU [
#
]/[
$
] key.
(4) Press the [DISPLAY] key twice to return to the normal
screen.
5. Receive channel setting
Refer to the
OPERATING INSTRUCTIONS
and set the
receive channels (channels preset).
6. User setting
Check the user setting values in Table 2 and Table 3. If
setting value is different, set the correct value.
For setting, refer to the
OPERATING INSTRUCTIONS
.
7. Setting of SERVICE MENU
Verify the setting for each setting item in the SERVICE
MENU.(See Table 4.) If readjustment is necessary,
perform adjustment referring to “ADJUSTMENTS
PROCEDURE”.
1. IF
3. DEF
5. PRESET
6. AUDIO
7. PLUG & PLAY (ON)
2. VC
4. VSM PRESET
SERVICE MENU
1-7 : SELECT
DISPLAY : EXIT
SERVICE MENU
******* **** ***** *****
**** **** *** ***
Fig. 1
MENU
MENU
MENU
DISPLAY
MENU
PICTURE
MODE
NAME OF REMOTE CONTROL KEYS
SYSTEM CONSTANT-1
: SEL - + : OPE
COMB
TILT
NTSC
YES
NTSC
SUPER BASS
NO
LANGUAGE
E/S/P
SYSTEM CONSTANT SET 1
COLOR SYSTEM
DISP : EXIT
SYSTEM CONSTANT-2
: SEL - + : OPE
B / B SOUND
YES
NO
TUNER
MU
COLOR AUTO
NO
SYSTEM CONSTANT SET 2
MSP
DISP : EXIT
SYSTEM CONSTANT-3
: SEL - + : OPE
: 001
: 002
SYSTEM CONSTANT SET 3
LOCK
LONG WAIT
SHORT WAIT
: YES
3D SURROUND
: NO
AMP TUNER
DISP : EXIT
SYSTEM CONSTANT-4
: SEL - + : OPE
SYSTEM CONSTANT SET 4
YES
COMPONENT
YES
16 : 9
YES
M.L. delete
DISP : EXIT
Fig. 2
