Overall Characteristics Check - Sony WRR-801A Service Manual

3-2-2. Overall Characteristics Check

Perform the overall characteristics check according to the
following procedure.
Procedure
1. Output level check
↓
2. S/N check
↓
3. Frequency characteristic check
↓
4. Distortion check
↓
5. RF Level indicator/RF indicator check
↓
6. AF Level indicator/AF indicator check
↓
7. Muting level check
↓
8. BATT indicator check
↓
9. Tone squelch check
↓
10. DC + 9 V OUT voltage check
Equipment and Tools
. Signal generator
. Audio analyzer
. Mic amp (Noise mete) with A-weighted filter
. Function generator
. Oscilloscope
. DC current meter
. DC cut fixture (See "How to make DC cut fixture" on
page 3-1.)
3-8
Connection
Signal
TUNER
generator
OUTPUT 1
DC cut fixture
ANTENNA
A IN
Function
generator
1 2
Tuner
Audio
MIC amp
analyzer
600 Z
balance
input
Oscilloscope
DC cut fixture
ANTENNA B IN
WRR-801A
3 4 5 6
WRU-801A
WRR-801A
WRU-801A