5 - 5
RECEIVER ADJUSTMENT (continued)
ADJUSTMENT
ADJUSTMENT CONDITIONS
MEASUREMENT
VALUE
ADJUSTMENT
POINT
UNIT
LOCATION
UNIT
ADJUST
HF TOTAL
GAIN
1
• Frequency
: 14.09850 MHz
• Mode
: USB
• Connect an SSG to the anntena connector
for 0.1–30 MHz (50
Ω
ANT) and set as;
Frequency
: 14.10000 MHz
Level*
: 1 mV (–47 dBm)
Modulation
:
OFF
• Receiving
Rear
panel
C o n n e c t a n A C
millivoltmeter to the [EXP
SP] jack with an 8
Ω
load.
1.5 kHz audio signal
Front
panel
[DIAL]
1.0 V (0 dB)
[AF GAIN]
2
• Set the SSG as;
Level
:
OFF
100 mV (–20 dB)
MAIN-A
R139
VHF/UHF
TOTAL GAIN
1
• Frequency
: 173.0185 MHz
• Mode
: USB
• Connect an SSG to the antenna connector
for 30–2000 MHz and set as;
Frequency
: 173.02000 MHz
Level*
: 1 mV (–47 dBm)
Modulation
:
OFF
• Receiving
Rear
panel
C o n n e c t a n A C
millivoltmeter to the [EXT
SP] with an 8
Ω
load.
1.5 kHz audio signal
Front
panel
[DIAL]
1.0 V (0 dB)
[AF GAIN]
2
• Set the SSG as;
Level
:
OFF
100 mV (–20dB)
MAIN-A
R504
NOISE
BLANKER
1
• Frequency
: 173.00000 MHz
• Mode
: USB
• Connect an SSG to the antenna connector
for 30–2000 MHz and set as;
Level*
: 5.6 µV (–92 dBm)
and apply the following signal to the anntena
connector.
• Mode
: ON
• Receiving
Rear
panel
Connect an oscilloscope to
the [EXT SP] with an 8
Ω
load.
M i n i m u m n o i s e
level
MAIN-A
L18, L21
CENTER
STOP
1
• Frequency
: 173.02000 MHz
• Mode
: FM
• Tunig step
: 100 Hz
• Connect an SSG to the antenna connector
for 30–2000 MHz and set as;
Frequency
: 173.02000 MHz
Level*
: 32 µV (–77 dBm)
Modulation :
OFF
• Receiving
MAIN-A Connect an oscilloscope to
CP3.
At the point where
the voltage just
b e c o m e s 0 V
f o r e q u i d i s t a n t
v a l u e s b o t h
above and below
t h e d i s p l a y e d
freqency.
MAIN-A
R233
AM CENTER
1
• Frequency
: 173.01870 MHz and
173.01890 MHz
• Mode
: AM
• Connect an SSG to the antenna connector
for 30–2000 MHz and set as;
Frequency
: 173.02000 MHz
Level*
: 32 µV (–77 dBm)
Modulation :
OFF
• Receiving
MAIN-A
Connect an oscilloscope to
CP3.
At the point where
the voltage just
becomes 0 V at
173.01870 MHz
a n d 5 V a t
173.01890 MHz.
MAIN-A
R447
*; This output level of the SSG is indicated as SSG's terminated circuit.
(Replacement page)
Apr. 2010
1 msec.
100 msec.
Summary of Contents for iC- r8500
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS REPLACEMENT PAGE 5 3 PARTS LIST 1 VOLTAGE DIAGRAM 21 Jun 2011...
Page 24: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 21 VOLTAGE DIAGRAM 23 Apr 2011...
Page 52: ...Replacement page Jan 2011 5 6 MAIN A UNIT CP2 Noise blanker check point...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 21 VOLTAGE DIAGRAM 23 Sep 2010...
Page 147: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 20 VOLTAGE DIAGRAM 22 Feb 2009...
Page 177: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 20 VOLTAGE DIAGRAM 28 Jul 2008...
Page 213: ...S 14318XZ C1 Nov 2006 COMMUNICATIONS RECEIVER...
Page 221: ...4 2 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 222: ...4 3 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 223: ...4 4 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 224: ...4 5 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 225: ...4 6 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 226: ...4 7 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 227: ...4 8 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 228: ...4 9 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 229: ...4 10 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 230: ...5 1 SECTION 5 ADJUSTMENT PROCEDURE MAIN A PLL B PLL B MAIN A...
Page 231: ...5 2 PLL B MAIN A...
Page 233: ...5 4 MAIN A MIX A AND RF C UNITS CONBV B AND RF C UNITS...
Page 234: ...5 5 MAIN A MAIN A MAIN A MAIN A MAIN A MAIN A MAIN A...
Page 235: ...5 6 MAIN A UNIT...
Page 236: ...5 7 RF C BPF TUNED VOLTAGE ADJUSTMENT RF C BPF...
Page 237: ...5 8 RF C BPF TUNED VOLTAGE ADJUSTMENT continued RF C BPF...
Page 238: ...5 9 RF C BPF...
Page 239: ...5 10...
Page 261: ...7 2...
Page 262: ...7 3...
Page 265: ...SECTION 8 SEMICONDUCTOR INFRMATION 8 1...
Page 266: ...8 2...
Page 286: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14318XZ C1 2006 Icom Inc...
