Service Caution - Panasonic NV-MV40GC Service Manual

2.1 SERVICE CAUTION-1

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When the Microprocessor IC6001 and/or Back-up battery B7751 are replaced, read the following
procedure carefully and proceed it.
[REASONS]
There is a RAM in the IC6001, which is backing up:
1. Programme Navigation Data [See NOTE1]
2. TV Tuning Data
3. PG Shifter Adjustment Data
4. Option Setting Data
When IC6001 are replaced, all above listed data become not available.
These data is backed up by using the power source of:
*AC Connected: AC Power source
*AC Disconnected: Back-up Battery (B7751) & Back-up Capacitor (C7752)
[NOTE1]
As for your reference, without inserting a tape into a VCR, you can confirm that the NAVI data that
is back up with IC6001 as shown in the following steps.
1. Indicate the "NAVI" mark on the Front Information Panel. (Press the Menu button and select
the option, then set the "NAVI" to ON mode.)
2. Turn on the Service Mode and press the "NAVI" button on the Remote Controller in more
than 5 seconds. The "NAVI" data list is displayed on the Monitor. (Press the "MENU" button
on the Remote Controller for cancellation.)
Although stored NAVI data can be confirmed on the monitor, there is no way to transfer the NAVI
data to IC6001which is newly mounted.
2.1.1 REPLACING PROCEDURE [IC6001]
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