Linde 336 Series, Service Training, Page: 134 / 168

Service Training
Section 2.6
Page 80
2.6.11 LINDE DIAGNOSTIC UNIT
In future Linde will use more microprocessor-based controls. For this reason Linde has developed the
diagnostic unit P/N 390 360 5405. This special tool and measuring unit (WM 136) can now be ordered from
parts Service.
The Linde diagnostic unit is used for communication (programming, initiaiization and queries) with the
microprocessor-based controls of Linde components provided with an ISO Interface (DIN/ISO 9141). The
diagnostic unit contains terminal software which allows communication with the unit in question through the
ISO interface.
The internal operating software is integrated in an EPROM and it controls the input, output and display. No
adaption of the operating software to newly developed or modified components is required.
The diagnostic unit is equipped with an LCD (liquid crystal display) with 4 lines, each consisting of 20 digits,
and a foil keyboard with 20 keys. A cable supplied with the diagnostic unit is used to connect the unit to the
Linde component in question.
Power is supplied by four 1.5 V round cells R6 or by electrical system of the Linde truck. The installed round
cells are tested each times the diagnostic unit is switched on.
If no key is touched, the diagnostic unit is automatically switched off after 80 sec. to spare the round cells.
If visibility is pour, the display can be illuminated pressing the appropriate key.
The contrast of the LCD display can be set with a potentiometer in the diagnostic unit.