Sony WRT-847A, Service Manual

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3-1 WRT-847A/847B
3-1. Equipment and Tools
Equipment Required
Name Specifications Model Name
DC Power Supply Output regulated voltage: 0 to 5 V dc, 2 A _
DC Ammeter Measurement range: 300 mA _
Spectrum Analyzer Frequency: 10 kHz to 4 GHz ADVANTEST R3371B or equivalent
Modulation Analyze RF input Frequency: 150 kHz to 3 GHz ANRITSU MS616A or equivalent
RF Power Meter Range: 3
u
W to 100 mW HEWLETT PACKARD 435B (with Power sensor HEWLETT
with Power sensor PACKARD 8482A) or equivalent
Audio Analyzer Oscillator: 20 Hz to 100 kHz HEWLETT PACKARD 8903B (with A-weight filter) or equivalent
Distortion meter
S/N meter
Level meter
Frequency Counter Frequency: 10 Hz to 1000 MHz HEWLETT PACKARD 5385A or equivalent
Effective digits: 10 digits
Resolution: 0.1 Hz
Oscilloscope Frequency: DC to 10 MHz _
Digital Volt Meter Effective digits: 3
1
/ digits _
2
Tools Required
Name Part No. Remarks
RF adjusting cable J-6402-390-A For RF signal input
RF conversion connector J-6402-490-A For RF signal input
AF input cable J-6407-010-A For AF signal input
Adjustor (0.4
x
1.3 mm) 7-721-052-81
Stop ring removal tool J-6407-000-A For removal stopring
Section 3
Electrical Alignment