Panasonic NV-FJ623EG, Service Manual

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2.1.1 REPLACING IC7702/EEPROM
When the EEPROM: IC7702 is replaced, applicable model code, option code and electrical adjustment data will
not be available.
Therefore, enter and/or adjust the necessary data after replacing IC7702 by referring following procedure.
STEP1.REPLACE THE IC7702
1. Remove the C.B.A. with Mechanism unit by referring the Disassembly procedure.
2. Disconnect the AC plug and replace the IC7702.
STEP2.INPUT THE MODEL & OPTION CODE
1. Set up the applicable model code and option code by ordering the following table.
Fig.S1 Service Secreen (sample)
PROCEDURE F.I.P. DISPLAY
Turn on the Service Mode
1.Press the FF key and the EJECT key simultaneously for more than 3 seconds.
Activate the Service Mode 2
2.While keep placing FF key, press the EJECT key in twice.
Activate the Entering Mode.
3.Press the EJECT key for more than 3 seconds.
Set the Mode 2.
4.Press the CH UP key in twice.
Display the Setting Code.
5.Press the POWER Button to turn the power on.
(Colon starts flashing)
Enter the Model and Option Code.
6.Service Screen is displayed on the monitor.
7.Set the applicable Model and Option code by using REW, PLAY, STOP and FF keys on theRemote Controller. (See Fig.S1 & S2)
Exit from Service Mode.
8.Press the POWER Button to turn the power off.
9. Press FF and EJECT keys simultaneously in 6 times.
(Normal Indication)