Panasonic NV-HV61EE, Service Manual

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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]
[1.PREPARATION]
Before replacing IC6001:
1. Take note that stored TV broadcast channels. (Because, its user
may store TV broadcasts by manually other than "Auto Tuning"
operation and it is also erased.)
NOTE:
During servicing, do not make a short circuit between IC6001-pin 37 (5V) with other line/
Components otherwise IC6001 may be broken.
CAUTION:
*When replacing the B7751, be sure to read/follow the "HOW TO
REPLACE THE LITHIUM BATTERY" section.
[2.REPLACING PROCEDURE IN STEPS]
STEP1.PREPARATION
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