Chapter 4 Maintenance Introduction This chapter contains periodic maintenance and performance test procedures for the PAF-19XX-EX-XXX Multi-Carrier Power Amplifier (MCPA) system. NOTE Do not break seals on equipment under warranty or warranty will be null and void. Do not return equipment for warranty or repair service until factory shipping instructions are received.
System Component Part Numbers PAF-19XX-EX-XXX Clearing Alarm Faults Setting the MCPA front panel OFF/ON/RESET switch to RESET can clear many alarm faults. An attempt to reset the MCPA should be your first course of action. 24-Hour technical support service is available at our main phone number 888-797-9283 or 714-466-1000; select the "System Operator Technical Support" option to receive assistance from Powerwave's Applications Support Group. Refer to Table 4-2 for troubleshooting suggestions.
PAF-19XX-EX-XXX Field Replacement Procedures MCPA To replace an MCPA module, shown in Figure 4-1, perform the steps in Table 4-3. CAUTION: To prevent damage to MCPA rear connector, support rear of MCPA when removing from subrack. The MCPA weight is approximately 20 lbs (9.1 kg). Table 4-4 MCPA Removal and Replacement Procedure Step Action 1. Set MCPA front panel OFF/ON/RESET switch to OFF 2. Rotate MCPA module quarter-turn fasteners counterclockwise 3.
Field Replacement Procedures PAF-19XX-EX-XXX Subrack Cooling Fans Refer to Chapter 3 - Air Conditioning for cooling-fan operating parameters before replacing fans. To replace an inside or rear mounted cooling fan or change the fan mounting configuration, proceed as follows: CAUTION: To prevent damage to MCPA rear connector, support rear of MCPA when removing from subrack. MCPA weight is approximately 20 lbs (9.1 kg).
PAF-19XX-EX-XXX Field Replacement Procedures Rear Mount Rear mounted fans may be changed without shutting down the system. To replace the fans, shown in Figure 4-3, perform the steps in Table 4-5. CAUTION: The replacement fan may operate when the power connector is connected. Ensure that no objects (fingers, screwdrivers, etc.) intrude into the fan area. Table 4-6 Rear Mount Cooling Fan Removal and Replacement Procedure Step Action 1.
Field Replacement Procedures PAF-19XX-EX-XXX Fan Inside Mount to Rear Mount Conversion To convert the subrack fan from inside mount to rear mount, as shown in Figure 4-4, perform the steps in Table 4-6. Table 4-7 Fan Conversion Procedure Step Action 1. To remove fan assembly from subrack, follow steps listed in Table 4-5 2. Disassemble inside mount fan assembly as shown in Figure 4-4 3. Reassemble inside mount fan assembly into rear mount configuration shown in Figure 4-4.
PAF-19XX-EX-XXX Field Replacement Procedures Subrack To remove and replace the subrack, shown in Figure 4-5, perform the steps in Table 4-7. CAUTION: Support rear of Subrack when removing from rack. The subrack may disengage suddenly from the sliding brackets. Table 4-8 Subrack Removal and Replacement Procedure Step Action 1. At affected subrack, set all MCPA OFF/ON/RESET switches to OFF 2. At breaker panel, set all subrack associated circuit breakers to OFF 3.
Field Replacement Procedures PAF-19XX-EX-XXX Filter To remove and replace the filter, shown in Figure 4-6, perform the steps in Table 4-8. Table 4-9 Filter Removal and Replacement Procedure Step Action 1. At subrack, set all MCPA OFF/ON/RESET switches to OFF 2. At breaker panel, set all circuit breakers to OFF 3. Disconnect and tag all cables from filter 4. Remove four screws securing filter to shelf 5.
PAF-19XX-EX-XXX Field Replacement Procedures Circuit Breaker Panel To remove and replace the circuit breaker panel, shown in Figure 4-9, perform the steps in Table 4-11. Table 4-10 Circuit Breaker Panel Removal and Replacement Procedure Step Action 1. Turn off all +27 VDC BTS input power to PAF system 2. Label and disconnect all input and output DC power connections from top rear of circuit breaker panel 3. Remove screws from circuit breaker panel 4.
Return For Service Procedures PAF-19XX-EX-XXX Return For Service Procedures When returning products to Powerwave, the following procedures will ensure optimum response. Obtaining An RMA A Return Material Authorization (RMA) number must be obtained prior to returning equipment and to reduce delays in receiving repair service. Please contact our Repair Department at rma@pwav.com, (714) 466-1000 to obtain this number, or FAX your request to (714) 466-5816.
Chapter 5 Specifications Introduction This chapter provides system specifications that support the PAF-19XX-EX-XXX MCPA system. The system specifications are listed in Table 5-1 . Table 5-1 System Specifications Electrical Specifications/Features Downlink Frequency Range 1930 - 1990 MHz RF Power Output per Antenna Port Measured @ Alpha, Beta, and Gamma Bulkheads 468 watts (56.7 dBm) per sector nominal AMPS 381 watts (55.
Introduction PAF-19XX-EX-XXX Table 5-1 System Specifications (Continued) Environmental Specifications/Features Operating Temperature Range -5 - +45o C Operating Humidity Range 5 -100% RH @ +40o C, Non-Condensing Altitude -60 to 4000 meters Seismic GR-63-CORE, Section 4.4.1, Zone 4 Lightning Surge Protection 3 kA @ 10/350 us waveform 5 kA @ 8/20 us waveform Office Vibration GR-63-Section 5.4.
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