TM1215 Iss. 6.0 RPR750
4 Servicing (excluding IS variants)
STATIC SENSITIVE DEVICES ARE USED WITHIN THIS EQUIPMENT. CARE MUST BE
TAKEN TO ENSURE THAT DAMAGE TO THESE DEVICES, IS NOT CAUSED BY HIGH
LEVELS OF STATIC ELECTRICITY.
4.1. Routine Maintenance
Routine maintenance of the RPR 750 Series receiver is limited to replacement of the
battery when required and surface cleaning of the unit, using a lint-free cloth moistened
with soapy water.
4.2 Service Policy
Where possible, it is advocated that faulty units are returned to Multitone for repair. Where
it is necessary to effect repairs in the field, these should be limited to the direct
replacement of the identified faulty module, or broken case part, only. Any component
removed, must be replaced by the relevant item as specified in Section 6.
Any work should only be carried-out by qualified personnel, in correctly equipped and
authorised workshops. Liability is not accepted for any work carried-out by third parties.
Workshops must be free from hostile radio interference, or equipped with suitable
screening facilities.
Work on Intrinsically Safe variants of the equipment must only be carried out by
Multitone trained personnel, or authorised service centres. When re-programming
equipment, only use the specified Multitone P648 Programming Unit, otherwise the
Intrinsic Safety status of the equipment is void.
4.3 Test Equipment & Tools
The following tools and test equipment may be required during any servicing procedure: -
• IBM PC or equivalent
• Multitone P648 Programming Unit & software
• Multitone P645 Test Encoder, cable & software
• Multitone Fault finding jig
• RF Signal Generator
• SINAD Meter
• Oscilloscope
• AC Millivoltmeter
• RF Millivoltmeter with high impedance/low capacitance probe
• Digital Multimeter
• TEM Cell
• DC Power Supply 1-1.5V
• Anti-static Workstation
• Surface-mount component handling tools
• Modified case-front assembly
• Trimming Tools - tip sizes 0.4 - 1.8mm
• M2 cross-point screwdriver
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