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Icom Ic706Mk2g Hf/Vhf/Uhf All Mode Tranciever Service Manual

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Page 21

4 - 7
• MAIN AND FILTER UNITS • PA UNIT
C58
R162 R214
R174
R175 R231 J571
CP1071
Drive idling
adjustment
Final idling
adjustment
SWR detection
pre-setting Idling current
pre-setting
W16SWR detection
check pointSWR detection
adjustment

Page 22

4-4 RECEIVER ADJUSTMENTS
*This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit.
RECEIVER
TOTAL GAIN
WFM
RECEIVING
NOISE
BLANKERMuximum AF  output
level
30 dB of AF level differ-
ence
4.0 V
Adjust the maximum
noise wave displayed
on the oscilloscope.
At the point where the
noise just reduces. 1
2
1
1
2• Display freq. : 14.10000 MHz
• Mode : USB
• [RIT] : OFF
• [M4 AGC] : Fast (F AGC)
• [M3 NB] : OFF
• [P.AMP/ATT] : Preamp ON
• Connect a standard signal genera-
tor to...

Page 23

4 - 9
• MAIN UNIT
CP631 L632R741
L741
L731
L621 L633 CP632
Receiver total gain
adjustment
Noise blanler
check point
Noise blanler
adjustment
WFM receiving
adjustment
WFM receiving
check point

Page 24

4-5 SET MODE ADJUSTMENT
4 - 10
ENTERING
ADJUSTMENT
SET MODE
Id APC
FILTER
CALIBRATION
POWER
METER
(14 MHz)
TUNING
POWER
(14 MHz)
(50 MHz)
POWER
METER
(145 MHz)
POWER
METER
(430 MHz)
ALC METER
SWR METER
ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION
• Enter adjustment set mode:
1Turn power OFF.
2Terminate the [REMOTE] jack with a
3.5(d) mm mini-plug.
3While pushing [P.AMP/ATT] and
[TUNE/CALL], turn power ON.
• Connect an RF power meter to [ANT1]
connector.
• Connect a DC ammeter between the DC
power...

Page 25

SET MODE ADJUSTMENT (continued)
ENTERING
ADJUSTMENT
SET MODE
SENSITIVITY
S-METER
• Enter adjustment set mode:
1Turn power OFF.
2Terminate the [REMOTE] jack with a
3.5(d) mm mini-plug.
3While pushing [P.AMP/ATT] and
[TUNE/CALL], turn power ON.
• Connect a standard signal generator to
[ANT2] and set as :
Frequency : 60.05150 MHz
Modulation : OFF
• Receiving
• Connect an SSG to [ANT1] connector and
set as:
Frequency : 14.1515 MHz
Level : OFF
• Receiving
• Set an SSG as :
Level : 50 µV (–73 dBm)
Modulation :...

Page 26

S.=Surface mount
S1 2250000290 ENCODER SW-159 (EC24B50B)
W1 8900006040 CABLE OPC-593
W2 8900006250 CABLE OPC-610
IC1 1140008050 S.IC HD6433832SD47H
IC2 1130007960 S.IC SED1522F0C (QFP15-100PIN)
IC3 1130002660 S.IC µPD4030BG-T1
IC4 1110004750 S.IC S-80945ALMP-DA9-T2
IC5 1180001080 S.IC S-81250PG-PD-T1
IC6 1140003630 S.IC X24C01S-2.7T6
Q1 1590002310 S.TRANSISTOR DTC114EE TL
Q2 1520000460 S.TRANSISTOR 2SB1132 T100 R
Q3 1530002060 S.TRANSISTOR 2SC4081 T107 R
Q4 1540000440 S.TRANSISTOR 2SD1619-T-TD
Q8...

Page 27

[DISPLAY BOARD] [DISPLAY BOARD]
S.=Surface mount
R116 7030003430 S.RESISTOR ERJ3GEYJ 821 V (820 ½)
R117 7030003420 S.RESISTOR ERJ3GEYJ 681 V (680 ½)
R118 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 k½)
R119 7030003420 S.RESISTOR ERJ3GEYJ 681 V (680 ½)
R120 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 k½)
R121 7030003470 S.RESISTOR ERJ3GEYJ 182 V (1.8 k½)
R122 7030003420 S.RESISTOR ERJ3GEYJ 681 V (680 ½)
R123 7030003390 S.RESISTOR ERJ3GEYJ 391 V (390 ½)
R124 7030003390 S.RESISTOR ERJ3GEYJ 391 V (390 ½)
R125...

Page 28

[MAIN BOARD] [MAIN BOARD]
S.=Surface mount
IC2221 1130007570 S.IC BU4094BCFV-E2
IC2222 1130007570 S.IC BU4094BCFV-E2
IC2231 1130005490 S.IC TC74HC4094AF
IC2232 1130007570 S.IC BU4094BCFV-E2
IC2241 1160000130 S.IC TD62783AF (TP1)
Q111 1590002310 S.TRANSISTOR DTC114EE TL
Q112 1590002310 S.TRANSISTOR DTC114EE TL
Q121 1590002310 S.TRANSISTOR DTC114EE TL
Q122 1590001870 S.TRANSISTOR DTA114EE TL
Q131 1590002310 S.TRANSISTOR DTC114EE TL
Q132 1590002310 S.TRANSISTOR DTC114EE TL
Q133 1590001870 S.TRANSISTOR...

Page 29

[MAIN BOARD] [MAIN BOARD]
S.=Surface mount
D1113 1160000140 S.DIODE DAP222 TL
D1114 1790001610 S.DIODE 1SS385 (TE85L)
D1131 1790001330 S.ZENER MA8036-L (TX)
D1132 1160000140 S.DIODE DAP222 TL
D1161 1790001610 S.DIODE 1SS385 (TE85L)
D2001 1750000370 S.DIODE DA221 TL
D2002 1750000370 S.DIODE DA221 TL
D2025 1790001250 S.DIODE MA2S111-(TX) [ESP] only
D2026 1790001250 S.DIODE MA2S111-(TX) [FRA] only
D2027 1790001250 S.DIODE MA2S111-(TX) [EUR], [ESP] only
D2029 1790001250 S.DIODE MA2S111-(TX) [ESP] only
D2030...

Page 30

[MAIN BOARD] [MAIN BOARD]
S.=Surface mount
L1044 6200003260 S.COIL NL 322522T-101J
L2001 6200001830 S.COIL NL 322522T-100J
L2251 6200003950 S.COIL HF50ACC 322513-T
L2252 6200003950 S.COIL HF50ACC 322513-T
L2253 6200003640 S.COIL MLF1608K 100K-T
L2254 6200005190 S.COIL MLF1608D R56K-T
R111 7030003310 S.RESISTOR ERJ3GEYJ 820 V (82 ½)
R112 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 ½)
R113 7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 ½)
R114 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 k½)
R115 7030000300...

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