No. 51955
AV42PD20ES
17
REPLACEMENT OF MEMORY ICs
1. MEMORY ICs
This TV uses memory IC. In the memory IC, there are memorized data
for c orrec tly operating the video and deflection circuits.
When replac ing the memory IC, be sure to use an IC written with the
initial values of data.
2. PROCEDURES FOR REPLACING MEMORY ICs
PROCEDURE
(1)
Power off
Switch the power off and disconnect the power plug.
(2)
Replace ICs
.
Be sure to use a memory IC written with the initial setting data.
(3)
Power on
Connect the power plug and switc h the power on.
(4)
Check and set SYSTEM CONSTANT SET
"
The adjustment should not be done without signal.
1) Press the
INFORMATION
key and the
MUT ING
key of the
REMOTE CONTROL UNIT simultaneous ly.
2) The SERVICE MENU screen of Fig. 1 will be displayed.
3) While the SERVICE MENU is displayed, press the
INFORMATION
key and
MUTING
key s imultaneously, and the
SYSTEM CONSTANT SET screen of Fig. 2 will be display ed.
4) Check the setting values of the SYSTEM CONSTANT SET of
Table 1. If value is different, selec t the setting item with the
FUNCTION
▲
▲
▲
▲
/
▼
▼
▼
▼
key, and set the c orrect value with the
FUNCTION
/
key.
5) Press the
MENU(OK)
key to memorize the setting value.
6) Press the
INFORMATION
key, and return to the normal screen.
(5)
Setting of receive channels
Set the rec eive channel.
For setting, refer to the OPERATING INSTRUCTIONS.
(6)
Setting of SERVICE MENU
Verify the setting items of the
SERVICE MENU
of Table 2, and reset
where necessary.
For setting, refer to the SERVICE ADJUSTMENTS.
(7)
User settings
Check the us er setting values of Table 3, and if setting value is
different, set the c orrec t value.
For setting, refer to the OPERATING INSTRUCTIONS.
SE RV ICE ME NU
1. IF
2. V/C
3. AUDIO
4. DEF
5. VSM PRESET
6. STATUS
7. PIP
8. - - -
9. SHIPPING (OFF) 0. BUS FREE
1-0 : SELECT
: EXIT
i
Fig.1
SY STEM CONSTANT S ET
+
: STORE
: EXIT
1. DESTINATION
E
O K
i
Fig.2
2. DIGIPURE PRO
3. PIP
4. PIC & T EXT
5. TDA9178
6. FLAT
YES
1 TUNER
YES
YES
YES
REMOTE CONTROL UNIT KEY ASSIGNMENT
INFORMATION
MENU
MUTING
FUNCTION
▲
/
▼
FUNCTION
/
POWER Key
