JVC AV-32Z25EUY Service Manual page 10

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AV-32Z25EUY
AV-28Z25EUY
REPLACEMENT OF MEMORY ICs
1. Memory ICs
This TV use memory ICs. In the memory ICs, there are memorized data
for correctly operating the video and deflection circuits. When replacing
memory ICs, be sure to use ICs written with the initial values of data.
2. Procedure for replacing memory ICs
(1) Power off
Switch the power off and unplug the power cord from the outlet.
(2)
Replace ICs.
Be sure to use memory ICs written with the initial data values.
(3)
Power on
Plug the power cord into the outlet and switch the power on.
(4)
Check and set SYSTEM CONSTANT SET:
* * * *
It must not adjust without signal.
1) Press the INFORMATION key and the MUTING 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, press the
INFORMATION key and MUTING key simultaneously, and the
SYSTEM CONSTANT SET screen of Fig. 2 will be displayed.
4) Check the setting values of the SYSTEM CONSTANT SET of
Table 1. If the value is different, select the setting item with the
FUNCTION UP/DOWN key, and set the correct value with the
FUNCTION -/+ key.
5) Press the MENU key to memorize the setting value.
6) Press the INFORMATION key twice, and return to the normal
screen.
(5)
Setting of receive channels
Set the receive channel.
For setting, refer to the OPERATING INSTRUCTIONS.
(6)
User settings
Check the user setting values of Table 2, and if setting value is
different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
(7)
Setting of SERVICE MENU
Verify the setting items of the SERVICE MENU of Table 3, and reset
where necessary.
For setting, refer to the SERVICE ADJUSTMENTS.
10
PROCEDURE
1. IF
3. AUDIO
5. VSM PRESET
7. PIP
9. SHIPPING (OFF) 0. BUS FREE
1-9 : SELECT
SYSTEM CONSTANT SET
1. DESTINATION
- /+
NAME OF REMOTE CONTROL KEY
Names of key
INFORMATION
MUTING
MENU
FUNCTION UP/DOWN
FUNCTION -/+
No. 52067
SERVICE MENU
2. V/C
4. DEF
6. STATUS
8. ---
i : EXIT
Fig.1
EU
: STORE
i : EXIT
OK
Fig.2
key
i i i i
OK

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