Tait T889, Manual

Page: 21 / 66

M889-00
Introduction To Servicing 3.3
Copyright TEL 02/10/95
3.1 General
If you require further information about the T889 or this manual, contact your nearest
authorised Tait Dealer or Service Centre. Further assistance may be obtained from the
Customer Support Group, Radio Infrastructure Division, Tait Electronics Ltd, Christch-
urch, New Zealand.
When requesting this information, please quote the equipment type number (e.g.
T889-10) and serial number. In the case of the service manual quote the Tait Internal
Part Number (IPN), e.g. M889-00-100, and for circuit diagrams quote the “Title”, “IPN”
and “Issue”.
3.1.1 Caution: CMOS Devices
This equipment contains CMOS Devices which are susceptible to damage from static
charges. Care when handling these devices is essential. For correct handling proce-
dures refer to the manufacturers' data books, e.g. Philips data books covering CMOS
devices, or Motorola CMOS data books, Section 5 “Handling”, etc.
Figure 3.1 Typical Anti-static Bench Set-up
An anti-static bench kit (refer to Figure 3.1) is available from Tait Electronics Ltd under
the usual consumable goods ordering system. The kit is held in stock under IPN
937-00000-34 and contains:
1 conductive rubber bench mat
1 earth lead to connect the mat to ground (c/w 1M series resistor)
1 wrist strap
information leaflet.
3.1.2 Caution: Aerial Load
The equipment has been designed to operate safely under a wide range of aerial loading
conditions. However, it is strongly recommended that the transmitter should not be
operated in the absence of a suitable load. Failure to observe this warning may result in
damage to the transmitter output power stage.
conductive rubber
bench mat
metal frame
to building earth
(not mains earth)
via 1M series resistor
conductive
wrist strap