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

							6 - 4
MP8 (FR)+MP12 (FR)+MP13 (FR)+MP14 (FR)+MP21 (FR)MP25 (FR)S1 (FR)MP18 (FR)+MP20 (FR) MP26 (FR) MP10 (FR)MP11 (FR)MP9 (FR) MP15 (FR)
MP7 (FR)VR BOARD
R1 (V)S1 (V)
R2 (V)W1 (FR)MP1 (D)DS4 (D)EP2 (D)DS5 (D)J2 (D) DISPLAY BOARD
W1 (FR)MP19 (FR)
MP1 (FR)+MP3 (FR)
+MP5 (FR)+MP6 (FR)+MP16 (FR)+MP17 (FR)S1 (FR)W2 (FR)MP4 (D)MP5 (D)MP3 (D)
MP27 (C)
MP77 (C)W1 (C)+WP85 (C)PA UNIT PLL UNIT
MP63 (C)
MP33 (C)MP34 (C)MP26 (C) MP35 (C) MP80 (C) J19 (PA) P8 (PA) MP49 (C) MP24 (C)MP12 (C) EP2 (C)
MP24 (FR) MP2 (FR)
MP23 (FR)MAIN BOARD
EP2 (C) MP19 (C)MP2 (M)
W1 (C)+MP85 (C)
MP60 (C)SP1 (C)MP28 (C)
W2 (C)
W3 (C)J4 (FL)
J7 (FL)J8 (FL)
FILTER BOARDMF1 (C)MP62 (C)
MP40 (C)
EP1 (C)MP65 (C)
MP20 (C)
J3 (C)
MP32 (C)
J4 (C)
MP8 (C)
MP25 (C) MP22 (C) MP49 (C)
Unit abbreviations:  (C): CHASSIS PARTS  (FR): FRONT PARTS  (D): DISPLAY BOARD  (M): MAIN BOARD
  (PL): PLL UNIT  (PA): PA UNIT (FL): FILTER UNIT (H): HPF BOARD (V): VR BOARD
MP4 (FR)
MP22(FR)
MP5  (M)
MP3 (M)+MP14 (M)
MP1 (M)MP8 (M)W15 (C)+MP86 (C)
MP6 (M) MP9 (M)MP10 (M)
MP7 ( M)
J5 (FL)
J14 (FL)
MP3 (FL)J11 (FL)
MP1 (FL)
MP75 (C)
MP74 (C)
MP79 (C)
MP81 (C)MP17 (C)
MP1 (C)
MP76 (C)MP63 (C)
MP89 (C)
MP7 (C)MP83 (C)
J641 (PA)
W15 (C)+MP86 (C)
W14 (C)
MP87 (C)
MP501 (PA) MP502 (PA)
MP233 (PA)
MP232 (PA) MP231 (PA) MP101 (PA)
MP234 (PA)
MP13 (PL)
MP24 (PL)
MP16 (PL)
MP14 (PL)
MP27 (PL)
MP26 (PL)
W3 (C)
W2 (C)
MP4 (M)
MP28 (PL)
MP6 (PL)+MP8 (PL)
MP11 (C)
MP19 (PL)
MP30 (PL)
MP31 (PL) MP9 (PL)+MP10 (PL)MP25 (PL)
MP5 (PL)+MP7 (PL)+
MP23 (PL)MP11 (PL)
MP1 (PL)
MP21 (PL)
W16 (C) 
MP37 (C) 
						

							7 - 1
1SS302
(Symbol: C3)1SV237
(Symbol: BB)
DA221
(Symbol: K)
MA2S111
(Symbol: A)
MA717WK
(Symbol: M3D) 1SS355 
(Symbol: A)
1SV265
(Symbol: LV)
DAN202U
(Symbol: N)HSB88WSTR
(Symbol: Silver line)
MA2S728
(Symbol: B)
MA742
(Symbol: M1U) 1SV305
(Symbol: TV)
DAN222
(Symbol: N)
KV1470TL
(Symbol: F7)
MA2SV0500L
(Symbol: A)
MA77
(Symbol: 4B)1SS375
(Symbol: FH) 
1SV308
(Symbol: TX)
DAP202U
(Symbol: P)
MA114
(Symbol: 1E)
MA304B
(Symbol: 7R)
MA8027
(Symbol: 2^7)1SS385
(Symbol: 09)
1SV312
(Symbol: BB)
DAP222
(Symbol: P)
MA2S077
(Symbol: S)
MA357
(Symbol: NL)
MA8033
(Symbol: 3_3)• DIODES
MA8036L
(Symbol: 3_6)
RD12M T2B2
(Symbol: 122)MA8056M
(Symbol: 5-6)
UM9401F
MA8068M
(Symbol: 6-8)MA862
(Symbol: M1I)
SECTION 7 SEMI-CONDUCTOR INFORMATION
ECB
S D
G
S
G
DG
G S
D
G S
D
S D
G
2SA1576 R
(Symbol: FR)
2SC4081 R
(Symbol: BR)
2SD1619
(Symbol: DB)
2SK508 K52
(Symbol: K52)
CPH3404
(Symbol: KD)
DTC114EU
(Symbol: 24)2SA1577 Q
(Symbol: FR)
2SC4116 GR
(Symbol: LG)2SC4213 B
(Symbol: AB)
2SD1623
(Symbol: DF)
2SK880 Y
(Symbol: XY)
DTA114EE
(Symbol: 14)
DTC144EE
(Symbol: 24)2SB1123T
(Symbol: BF)2SB1132R
(Symbol: BA)
2SK210 GR
(Symbol: YG)2SK2171-4
(Symbol: KM)
2SK882 GR
(Symbol: TG)
DTA114EU
(Symbol: 14)
MRF1508T1
(Symbol: 1508)2SC4403-3
(Symbol: LY3)
3SK126 O
(Symbol: UC)
DTA144EU
(Symbol: 16)
MXR9745RT1
(Symbol: RG)2SB1143 S
2SC4405-3
(Symbol: OY3)
2SK2854
(Symbol: UP)
3SK291
(Symbol: UF)
DTC114EE
(Symbol: 24)
RN1202SRFJ7044
(Symbol: SRFJ7044)UMC1NTR
(Symbol: C1)UMC3N TR
(Symbol: C3)XP4111
(Symbol: 9U)• TRANSISTOR AND FET’S
S
D S
G
B
C
E
D
SG2
G1
D
SG2
G1
S
D S
G
E1
B1
C2
E2 B2 C1
G
SD
GDS
S
D
SG
SS
S 
						

							8VLM
U/D
AF
PTT
MICEL
MICL
GND
SQLS
18
J1
TO FRONT UNIT W2DN
AFL
SQL
AFV
UP
SFT
GND
AFL
AF
AF
AFSAFS
5V
1
1312 2 J3
TO VR
BOARD J1
87
14 1
75
76
10050
26 51
125100
1
2575
51 76
26
5
84
150
S1
(FRONT)
MP5 Q11SUP 5V SDN
LRXD
LTXD
8V
AFO
GND
MIC
MICE
PWK
• DISPLAY BOARD  (TOP VIEW)
8-1 DISPLAY BOARD
AF RF/SQLM-CH SHIFTTO DISPLAY BOARD
J3AFL
AF
AF
AFSAFS
5V
DN
AFL
SQL
AFVUP
SFT
GND
J1
13
12
2
1
• VR BOARD
SPEAKERPHONES
SECTION 8 BOARD LAYOUT
8 - 1 
						

							POWERP.AMP/ATTTUNER/CALL
RIT/SUB
MENU
F-1
F-2
F-3
LOCK
DISPTS
MODE
PHONES
R3
W2
• DISPLAY BOARD  (BOTTOM VIEW)
8 - 2 
						

							85
14
114
781
48
5
1 8
169
1 8
169
1 8
16918
45
1
147 8
181
1020
11
TB3V
TB1V
PR3S
KEY
L8
UREF
UFOR
AT13
ICH
R8V
TB4V
TB2V
PR4S
STRT
L9
GND
VREF
VFOR
ICL
T8V
1 19
20 2 J401
CIVE
BDT
KEY
DOT
EALC
PTTP
SQLS
8V
DOUT
AMOD
CIV
FSKK
BAND
DASH
U/D
GND
AAF
AFO
T8V
DIN
1 19
20 2 J461
L2
L4
L6
GND
HREF
GND
14V
AT13
MICE
SNDSR
L1
L3
L5
L7
HFOR
SDSS
14V
14V
MIC
SEND
1 19
20 2 J431
LTXD
AFO
MIC
PWKLRXD
8V
GND
MICE
8 2
17 J1421MSST
MCK
GND
SPCH
MDT
SPBK
5VL
GND
AAF
FSKK
14V H5V
PDST
CON1
PCKIMSTDINT AFBP
8V PBST
MLLV
AFGC
DSPS
GND
14V
HV DRES
CON2
CON0
PDTDDTICK8V
POWSPCE
SPS
5V
ULJ1381 TO PA UNIT
J661
TO FILTER UNIT
J9
TO FILTER UNIT
J12
TO FRONT UNIT
MP20TO OPTIONAL UNIT
UT-102
AFI
AFIE
AFOE
AFO
GND
BFO
J1431
J791 P991TO OPTIONAL UNIT
UT-106TO PLL UNIT
J254
1
1 24
GND
BFO 1
72
8 J2061
30
229
1
• MAIN BOARD  (TOP VIEW)
8-2 MAIN BOARD
8 - 3 
						

							1 20 21
40
41
60
6180
1
48
5
1
1224
131
1 7
14 88
169
1
816
91
48
5 1
816
91 7
148 17 14 8
1 12
24 131
918
10
1
14 7
81
918
101 8
16 9 1
714
8
• MAIN BOARD  (BOTTOM VIEW)
8 - 4 
						

							HFO HFO GND
GND
HFI
HFI GND
GND
J101 J100
VUO VUO GND
GND
J201
1 4
1 4
TO PA UNIT
J2111 4TO PA UNIT
J160
VUI VUI GND
GND
J200 1 4TO PA UNIT
J210
TO PA UNIT
J161
SRF
SRF
GND
PA2SL6H
L4H
THH
GNDGND
GND
GND
GND
T8V
B7HL5H
L3H
L2H
GNDSIF
SIF
10 1
11 20 J101TO MAIN UNIT J1
• HPF BOARD (TOP VIEW)
• DRIVER BOARD (TOP VIEW)
8-6 HPF AND DRIVER BOARDS
8 - 5 
						

							• HPF BOARD (BOTTOM VIEW)
• DRIVER BOARD (BOTTOM VIEW)
8 - 6 
						

							J611 J612
ETKY
ETST
ET14
ETEETKY
ETST
ET14
ETE
P101
J601P651
P481
L174
HFI
HFI
GND
GND
1
4J160
GND
GND
HFO
HFO
4
1J161
TO DRIVE
BOARD
J100TO DRIVE
BOARD
J101
TO DRIVE
BOARD
J210TO DRIVE
BOARD
J211 VUI
VUI
GND
GND
1
4J210
TB4V
TB2V
PR4S
STRT
L9
GND
VREF
VFOR
ICL
T8V
TB3V
TB1V
PR3S
KEY
L8
UREF
UFOR
AT13
ICH
R8V
119220
J661
ESPO
ESPE
POWS
GND
14V
THER
8V
2MBL
ESPO
ESPE
GND
14V
14V
GND
8V
HV
16 215
1
J621
GND
GND
VUO
VUO
4
1J211 TO MAIN UNIT
J231TO MAIN
J401
TO PLL J252
TO MAIN UNIT
J141
• PA UNIT  (TOP VIEW)
8-4  PA UNIT
8 - 7 
						

							• PA UNIT  (BOTTOM VIEW)
8 - 8