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Service Manual
[29/76] 23 Rev.1.1 of 15/04/2017
4.5. PRINTER INTERFACE MODULE.
4.5.1. Description of the module
The Printer Interface (pos. 083), consisting principally of an integrated circuit (U1) of the ATMEL
AT908515 type, has the task of managing the printing operation and the serial communications with the
CPU board of the instrument.
The management of the printing device involves the feeding of the paper, management of the end-of-
paper and head raised sensors, and the control of the dots of the thermal head.
4.5.2. Applicable documentation
20010140 VES MATIC 10 / EASY interconnection diagram (6.4.)
20102462 Small WT01 Printer Interface diagram (7.5.)
30111340 Small WT01 Printer Interface board layout (7.5.)
4.5.3. Access to single module
a) Turn off the instrument and disconnect from the power supply.
b) Access the unit by opening the lid as indicated in chapter 2.
c) Detach the power supply cable connected to the connector CN11.
d) Detach the serial connection cable connected to the CN12.
e) Remove the safety guard pos. 004 unscrewing the screws in positions 217 and 219.
f) Extract the Interface board of the module by removing the screws marked on the layout 30111340
of the board pos. 082
g) Proceed with the replacement of the components affected by the various faults as indicated in
point 5.4.6.