Hitachi VTMX900ECT Manuel D'entretien page 4

1-8
Modifications
Description of the system used for publishing
modification data and supplements to the
service manual.
All modification data and supplements to the Service Manual are
published by means of Service Information bulletins.
Each Service information has a number, for example :
VR 00 - 01 GB
A Service Information bulletin concists of a front sheet, as the case
may be followed by supplementary and/or replacement sheets.
Replacement sheets serve to replace existing sheets in the Service
Manual. These sheets are identified by an additional letter after the
page number, for example 5-1a. Page 5-1a then takes the place of
page 5-1.
Supplementary sheets are inserted between the existing sheets in
the Service Manual. These sheets can be identified by an additional
figure following the page number, for example 5-1-1.
Sheet 5-1-1 should be inserted after page 5-1.
Description of the system by means of which
modifications are indicated in the recorder.
All important parts of the recorder, such as tape deck, p.c. boards
and modules, are provided with a sticker. These stickers specify a
number of product data. The meaning of this data will now be
explained for the most important sections.
The complete recorder
The type plate is located at the back of the recorder, below an
example of such a type plate is given.
Type plate :
MADE IN EUROPE MADE IN EUROPE
50Hz 50Hz
220-240 V ~ 220-240 V ~
S AA AAA BBB CCC DDD EEE FFF GGG
MODEL NO: MODEL NO: VR110/02
PROD.NO: PROD.NO: VN 37 VN 37 0015 123456 123456
Note :
- In the case of an important modification to the recorder the
production code on the type plate is increased by one.
E.g. 37 becomes 38.
- In the case of an important modification to the service
documentation the evolution code on the type plate is increased
by one.
E.g. AA becomes AB.
GB
Language
Sequence number
Year
Video cassette recorder
Service
Option codes (A-G)
Evolution code
Type number
Serial number
Production date
Production center (VN),
Production code
Tape deck
12345678 009271 AT-P2/0
Note :
The production code and the serial number on the tape deck need
not correspond to the production code and the serial number on the
type plate.
Printed panels
The stickers are generally located on the track side of the module.
Example :
AVR 01102
12345 KW 015 WD 01 123456
Remarks :
The production code number will not always be mentioned.
In case of an important modification, the last figure of the factory code
number (point number) is increased by one. E.g. 6635.1 becomes
6635.2.
00151 10WD51
Production code
Factory indication
Production date
Tape deck type
Factory code number
Serial number
Serial number
Production code
Production week
Printed board name
Factory code