Panasonic NV-VP31GL, Manual

Page: 11 / 194

it. Use caution when handling the cable.
4. The half-fixed resistor for laser power adjustment shall not be
adjusted. Do not turn the resistor.
6. GENERAL DESCRIPTION
6.1. OPERATING INSTRUCTIONS
6.2. SERVICE CAUTION-1
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 backed up by IC6001 as shown in the following steps.
1. 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 IC6001 which is newly mounted.
6.2.1. REPLACING PROCEDURE [IC6001]
[1.PREPARATION]
Before replacing IC6001:
11