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
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
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
: 173.0985 MHz
• Mode
: USB
• Connect an SSG to the antenna connector
for 30–2000 MHz and set as;
Frequency
:
173.1000
Level*
: 5.6 µV (–92 dBm)
and apply the following signal to the anntena
connector.
• [NB]
: OFF
Rear
panel
Connect an oscilloscope to
the CP2.
Maximum level
MAIN-A
L18, L21
2
• [NB]
: ON
Adjust L21 to the
point where the
signal on the CP2
just starts clipping.
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
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
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)
Jan. 2011
1 msec.
100 msec.
Содержание iC- r8500
Страница 1: ...SERVICE MANUAL ADDENDUM CONTENTS REPLACEMENT PAGE 5 3 PARTS LIST 1 VOLTAGE DIAGRAM 21 Jun 2011...
Страница 24: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 21 VOLTAGE DIAGRAM 23 Apr 2011...
Страница 50: ...SERVICE MANUAL ADDENDUM CONTENTS REPLACEMENT PAGES 5 5 5 6 PARTS LIST 1 VOLTAGE DIAGRAM 21 Jan 2011...
Страница 52: ...Replacement page Jan 2011 5 6 MAIN A UNIT CP2 Noise blanker check point...
Страница 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 21 VOLTAGE DIAGRAM 23 Sep 2010...
Страница 147: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 20 VOLTAGE DIAGRAM 22 Feb 2009...
Страница 177: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 20 VOLTAGE DIAGRAM 28 Jul 2008...
Страница 213: ...S 14318XZ C1 Nov 2006 COMMUNICATIONS RECEIVER...
Страница 220: ...4 1 SECTION 4 CIRCUIT DESCRIPTION UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Страница 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...
Страница 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...
Страница 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...
Страница 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...
Страница 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...
Страница 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...
Страница 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...
Страница 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...
Страница 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...
Страница 230: ...5 1 SECTION 5 ADJUSTMENT PROCEDURE MAIN A PLL B PLL B MAIN A...
Страница 231: ...5 2 PLL B MAIN A...
Страница 233: ...5 4 MAIN A MIX A AND RF C UNITS CONBV B AND RF C UNITS...
Страница 234: ...5 5 MAIN A MAIN A MAIN A MAIN A MAIN A MAIN A MAIN A...
Страница 235: ...5 6 MAIN A UNIT...
Страница 236: ...5 7 RF C BPF TUNED VOLTAGE ADJUSTMENT RF C BPF...
Страница 237: ...5 8 RF C BPF TUNED VOLTAGE ADJUSTMENT continued RF C BPF...
Страница 238: ...5 9 RF C BPF...
Страница 239: ...5 10...
Страница 261: ...7 2...
Страница 262: ...7 3...
Страница 265: ...SECTION 8 SEMICONDUCTOR INFRMATION 8 1...
Страница 266: ...8 2...
Страница 286: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14318XZ C1 2006 Icom Inc...