INS-H0001
LCD Display Upgrade
2
Figure 1. Internal Arrangement (7750i)
Kit Contents
The Display Upgrade Kit (part number 7250-116-A) consists of the display assembly, a power cable and these
instructions.
WCaution
The original instrument configuration drives the display with 12 VDC, but the
new display operates on 5 VDC. Therefore, the original power cable
(red/black twisted pair) MUST be removed and replaced with the new cable
(blue/black twisted pair) to avoid damage to the new display (refer to
User Interface Panel Removal; and Replacement Display Assembly sections.
Safety
These products have been designed to be completely safe when installed and operated in accordance with their
ratings and procedures published in the user’s manual supplied with the instrument.
The equipment operates from voltages that can be lethal, and pressure supplies that can cause injury.
Maintenance and repair must only be undertaken by suitably qualified technicians and good engineering practice for
all procedures in this publication. (A qualified technician must have necessary technical knowledge, documentation,
special test equipment and tools to carry out the required work on this equipment.
Pressure Safety
Safely release the pressures in the instrument before disconnecting any pipes from the pressure/vacuum sources or
the Device Under Test (DUT). Disconnect all pneumatic services and other connections to the rear panel before
removing the instrument cover.
On no account permit pressures greater than those indicated on the rear panel as the supply pressures to be connected
to the instrument.
Electrical Safety
Hazards exist when the instrument cover is removed — power down the instrument and disconnect the power cord
before removing cover.
The instrument is designed to be completely safe when used with the Options, Accessories and replacement parts
supplied by the manufacturer. Attention is drawn to the installation of the electrical supply.
