Icom IC-R7000 Service Manual page 29

RECEIVER ADJUSTMENT (Continued)
CONNECTIONS
VOLTMETER
SSG
I
TO PIN 1 OF IC3 (RF UNIT)
I
TO ANTENNA CONNECTOR
a
MEASUREMENT
ADJUSTMENT
POINT
ADJUSTMENT ADJUSTMENT CONDITIONS VALUE
UNIT LOCATION UNIT ADJUST
1st IF 1 •Display freq.: 250.0000MHz RF Connect a 9V RF R105
MIXER voltmeter to pin 1 of
2 • Display freq.: 249.0000 MHz
IC3.
9V R104
3 •Display freq.: 25.0000MHz
4-5V Verify
4 •Display freq.: 511.0000MHz More than 14V
RF TRAP 1 •Display freq.: 800.0000MHz FRONT METER Maximum RF L46, L47
• Mode: FM (narrow)
PANEL
•Apply RF signal to ANTENNA
CONNECTOR.
Level: 32µV (-77dBm)
Dev.: ±3.5kHz
Mod.: 1kHz
Freq.: 800.0000 MHz
2 •Display freq.: 800.0000MHz
S9+60dB
Verify
• Mode: FM (narrow)
•Apply RF signal to ANTENNA
CONNECTOR.
Level: 100mV (-7dBm)
Dev.: ±3.5kHz
Mod.: 1 kHz
Freq.: 800.0000 MHz
• Display freq.: 778.6000 MHz Less than S5 L67, L68
•RF signal freq.: 800.0000MHz
3 •Display freq.: 400.0000MHz
S9+60dB
Verify
• Mode: FM (narrow)
•Apply RF signal to ANTENNA
CONNECTOR.
Level: 100mV (-7d8m)
Dev.: ±3.5kHz
Mod.: 1 kHz
Freq.: 400.0000 MHz
• Display freq.: 378.6000 MHz Less than S5 L51
•RF signal freq.: 400.0000MHz
SQUELCH 1 • Display freq.:
c
Squelch closes. MAIN R37
762.0000MHz
• Mode: FM (narrow)
•SQUELCH
CONTROL:
SQUELCH
S-METER 1 •Display freq.: 762.0000MHz
FRONT METER S9+60dB MAIN R54
•FM
•Mode: FM (narrow) PANEL
(narrow) • R80 (IF UNIT): Center
•Apply RF signal to ANTENNA
CONNECTOR.
Level: 100mV (-7dBm)
Dev.: ±3.5kHz
2 • RF signal level: S9 R51
0.1 mV (-67dBm)
3 • RF signal level: S1-S3 Verify
1µV (-107dBm)
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