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1 GENERAL DESCRIPTIONS
1.1.
SERVICE CAUTION-1
When the Microprocessor IC6001 and/or Back-up battery
B6001 are replaced, read following procedure carefully and
proceed it.
[REASONS]
There is a RAM in the IC6001, which is backing up:
1. Programme Navigation Data
2. TV Tuning Data
3. PG Shifter Adjustment Data
4. Option Setting Data
When IC6001 and/or B6001 are replaced, all above listed data
become not available.
These data is backing up by using the power source of:
*AC Connected
: AC Power source
*AC Disconnected : Back-up Battery (B6001)
1.1.1.
REPLACING PROCEDURE
[IC6001/B6001]
[1. PREPARATION]
Before replacing IC6001 and/or B6001:
∙ Take a note that store TV broadcast channels.
(Because, its user may store TV broadcasts by manually
other than "Auto Tuning" operation and it is also erased.)
∙ Back-up the Programme Navigation data.
(The Programme Navigation data is transferable by using
"Programme Navigation Data Back-up Tool (VFK1493P)"
(You may take make it by referring following schematic
diagram.)
-NECESSARY STATUS OF THE VCR UNIT-
1. The IC6001 should be comunicable with the Programme
Navi. Back-up Tool. (VFK1493P)
2. The "NAVI" data has to be available in IC6001.
NOTE:
During servicing, do not make short IC6001-pin 37 (5V) with
other line/Components, otherwise, IC6001 may be broken.
[2. HOW TO CONFIRM THE "NAVI." DATA WITHOUT
INSERTING A TAPE INTO VCR?]
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" date list is displayed on the Monitor.
(Press the "MENU" button on the Remote Controller for
cancellation.)
[3. REPLACING PROCEDURE IN STEPS]
STEP 1. PREPARATION
1. Remove the C.B.A. with Mechanism unit by referring the
Disassembly procedure.
2. Connect the VFK1493P by referring the following figure.
5
AG-1340P
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