Pa And Filter Units - Icom IC-756PROII Service Manual

10-7 PA AND FILTER UNITS

RX 13.7V
TX 13.6V
R15
RX 0V RX 0V 100
TX 1.77V TX 0.68V
RX 13.8V
TX 13.6V
C41 R10
0.001 680
Q2
L14 2SC1972
J1 R2 LR-360
PA
W1 PAI 18
L4
Q1 LR-143
C1
2SC1971
0.1
L1
R9 1
LR-361
Q3
2SC1972
R16
100
W29
Q8
2SD1585K
MEASUREMENT CONDITIONS
VOLTMETER :50kΩ/VDC
OSCILLOSCOPE :20MHz 1MΩ 25pF
SUPPLY VOLTAGE :13.8V
DISPLAY :14.1MHz USB
PAT8
Q13 13.5V
R52
RX 1.0V 2SB1201
10
TX 7.0V
C100
RX 0V
C101 0.0047
TX 7.8V
0.0047
R56
12.2V 10k
RX 13.6V
TX 13.5V RX 0V
TX 13.4V
R53
1k
CHASSIS
J11 D10
MF1 R51 Q12
MA185 56
2SB1201
+ MF+ MF+
M CP1
MF- MF-
- C96
220
C102
0.0047
D61
RX 13.5V DAP222
TX 12.7V CP2
R55
10k
RX 12.7V
TX 0V
Q10
2SC4081
RX 0V
TX 0.75V
10 - 7
C61 0.001 CP11 CP12
C123 J2
PA P2 J1
18p PAO
W3
1 PAO
C22 0.001 RX 13.8V
TX 13.6V 2
R41 C118
C21 0.001 5.6 W14 120p
R32
RX 0V RL13
R21 10 0.68 AG201344
TX 0.65V
R33
R20 10 0.68 50MHz
Q4
L9
2SC5125
EXC-ELDR25C
R26
10
C87
0.0047
L10
L5
EXC-ELDR25C
R27 LR-216
10
Q5
R34 C18
R23 10 2SC5125 RL5
0.68 TB1-160 100p
R35
R24 10
0.68 7MHz
C119
J10
120p
C23 0.001
R42
5.6 C46
0.0047
C24 0.001
C62 0.001 L24
LR-387
C20 C37
RL11
0.1 TB1-160 27p
24MHz
28MHz
D2 D3
MA29B MA29B
R31 C52
C17 C18 CP39 1k 0.0047
0.047 0.047
R28
5
R29
CP40 1k
RL7
TB1-160
14MHz
C48
EP4 CHASSIS
0.0047
PHV W16
F2
EP5
CHASSIS
PGND W17
F3
RL1
AJV5341
D7
DAP222
CP503 13.8V
4.4V
Q9 J3
CHASSIS W13
UN9211 PAT8 CHASSIS
PHV
W16
PWRS
ICL W9
CP504
ICH
H5V CHASSIS
PGND
W17
8V
13.8V
8V W10
14V 14VA
14VA
14V
14V
4.9V
IC1 14V
TA7805F 14V
14V
I O
G
14V
CP502
14V
5V
CHASSIS FGND
EP502
IC2 5V
TA7805S 4.9V
R44 HV
3.9 NC
Q11 I O
G
2SC4081 GND
J4
GND
GND ACS1 ACS2
3 6
GND
IC3
MC78T08C 7.9V GND GND
GND
2 5
GND
I O
G GND HV HV
1 4
GND
RX 0V
GND
TX 0.3V FHV
GND
EP501
CP501
PA UNIT
CP13
CTIN
L9 L10
L29 L30 L31
LA-548 LA-550 LA-547 LA-481 LA-480
L5S
C83 C85 C86 RL14 C33 RL10
RL9
6p 15p 22p AG201344 18p TB1-160
TB1-160 C35
39p
18MHz
21MHz
L8S L6S
C88 C50 C51
0.0047 0.0047 0.0047
L6 L46
L45
LR-216 LR-218
LR-394
C22 RL6 RL16
RL15 C142 C145
22p TB1-160 39p TB1-160
TB1-160 82p
10MHz
L3S L4S
C47 C136 C137
0.0047 0.0047 0.0047
L25 L4
L26 L3
LA-388 LR-388 LR-138
LR-149
RL12 RL4
C39 C41 RL3 C10
10p TB1-160 300p TB1-160
27p TB1-160 C12
100p
3.5MHz
L7S L2S
C53 C44 C45
0.0047 0.0047 0.0047
L8 L28 L2
L1
LR-240 LR-241 LR-295
LR-294
RL8 RL2
C30 RL1 C2
TB1-160 150p TB1-160
18p C63 TB1-160 C5
47p 120p
C3
1.9MHz 330p
L5S L1S
C49 C42 C43
0.0047 0.0047 0.0047
L8S L1S
L3S L2S
L7S L4S
L5S L5S
L6S
MEASUREMENT CONDITIONS
VOLTMETER :50kΩ/VDC
SUPPLY VOLTAGE :13.8V
CP5 CP1
CP6 CP2
CP7 CP3
CP8 CP4
CP9
Selected 10.1V
CP10 FILTER UNIT
J3
LCD
L501 L502
LR-386 LR-386
13.8V
CP14
J2 (CTRL) P1
1
2
FRONT CHASSIS W11
J5
J101 J601 FRONT W5 J1 GND
5VF
EP1 5VF 5VF 5VF GND
MAIN MUP
MUP NOTL NOTL 3.5M
DIAL MDN
MDN PITL PITL 7M
GND
GND PB1A PB1A 10M
PB1B PB1B 14M
PB2A PB2A 18M
J1 FRONT W4 J120 PB2B PB2B 24M
GND GND
RUP RUP VHF
PBT
5VF 5VF GND GND GND
RDN RDN GND GND BOARD NC
GND GND
14V
GND GND 14V
GND GND J451 P352 CO3
GND GND SPE
CO2
GND GND NC CO1
RIT GND GND NC NVHF
GND GND SSP
BOARD CI3
CHASSIS CI2
J452 P1 CI1
SSP
+ GND
SSP
FRONT W6
J1 J201 NC SP1 GND
F5K F5K SSPE - J3
SSPE P3
F4K F4K
TUIN
F3K F3K
F2K F2K J941 FRONT W3 J1 J4
P4
F1K F1K PHE PHE TUNER
TUOT
SPEK SPEK AFO PHO BOARD
EXTK EXTK PHE PHE
J2
FILK FILK PHNI PHNI
GND GND
AMK AMK
CWK CWK GND GND
CHASSIS W7
SSBK SSBK GND GND
KI2 KI2 GND GND
PHONE
KI1 KI1 GND GND
5VF 5VF GND GND BOARD
MODE GND GND
BOARD GND GND
J921 FRONT W1 J1
DASH DASH
FRONT W7
J1 J221 DOT DOT
SPLK SPLK GND GND
1K 1K GND J2
GND
3K 3K GND GND
7K 7K GND GND
10K 10K GND
GND
14K 14K GND GND
18K 18K GND GND KEY
21K 21K GND
GND BOARD
24K 24K
28K 28K
J301 CHASSIS W10
50K 50K
LFMD
GENK GENK
FINK FINK LMFD
MPWK MPWK SRES
YOBI
MPRK MPRK
GND GND DISPLAY R
J2 FRONT W8 J241 G
BOARD
B
MUPK MUPK
MDNK MDNK HSYNC
MWK MWK VSYNC
GND
MCLK MCLK
GND
TSK TSK
XFCK XFCK GND
LOCK LOCK GND
NC
PBTK PBTK
NOTK NOTK -8V
(CTRL)P2 J101
KI4 KI4 -8V
NC RX
5VF 5VF
PLL
KI3 KI3 +18V
W701 RF
LDV LDV NC W741
J701 W702 J741
14V W742
LOCD LOCD
3LO T/R2IF
TXD TXD 14V
RXD RXD 14V
NC PLL
NOTD NOTD
PBTD PBTD NC UNIT
PLL
GND GND
J351 W351 (PLL)P351 J561
GND GND J321 CHASSIS W14 W352
1LOA 1LOA
GND GND
14V
GND GND
TEN-KEY 14V PLL
GND GND 14V J651 W651 (PLL)P651
J661
BOARD GND GND W652
NC 1LOB 1LOB
NC
NC
PLL
J2 FRONT W2 J322 NC W81 (PLL)P81
J81 J901
CHASSIS W8 J1 W82
MICI MICI PHE
2LO 2LO
M8V M8V AFO 8V
MUD MUD PHE NC
PLL
SQLS SQLS TMD 5V J851 W851 (PLL)P851 J481
MSND MSND PWRK 5V W852
MKR MKR
GND GND GND PSTB
MMICE MMICE
GND DRES PLL
AFO AFO GND CON0 J801 W801 (PLL)P801 J841
NC NC GND CON1 W802
S3LO S3LO
MIC BOARD NC NC
MICI CON2
PLL
8V PSEL
J901 W901 (PLL)P901 J831
MSND UNLC
W902
S2LO S2LO
MICE 14V
NC 14V
SQSS NC (PA)P1 J151
NC GND
PAI
NC GND
J1 M1
CTIN
J10 P1
T14V
T14V
J8 PW
PW
PX
GND PX J352
PY
GND
PY PZ SSP
3.5M
PZ
7M J11 P2 M2 DSP-A SPE
T14V
10M T14V
AW
14M J201 J2001 J2002 J202
AW
AX
18M AX GND 8V AGRS 3R3V_d
AY
24M AY FMTL 8V GND 3R3V_d J891 CHASSIS W10
AZ
VHF
AZ GND –5V M5V_d GND NC
GND GND –5V GND NSQO NC
NC GND –8V DSDR DPGI
14V
14V J7 CHASSIS W12 J741 GND –8V NC MODS
14V
14V 14V 14V DRAF GND NC FMNS 14V
CO3 14V 14V DTAF AGC MCK CALS
NC
CO2 14V GND GND DSFW ACKS
14V NC
CO1 GND NC DMAF GND MDAT DSRS NC
NVHF T8V T8V D5VA GND DSFR AMS
–8V
CI3 NC D5VA GND CTFL TXS
GND –8V
CI2 5V 5V D5VA GND RTDT MSL1 NC
CI1 5V 5V DRIF DTIF GND DSKY GND
GND NC GND GND GND GND
GND GND
GND -8V –8V GND
GND NC GND
J3
FORV FORV
TUIN YSYNC
REFV REFV HSYNC
J4 ANTS ANTS B
DRES DRES
TUOT G
GND GND R
J2 ISTA ISTA YOBI
IKEY IKEY
RFRX DRES
GND
GND LMFD
FSTB FSTB LFMD
J13
MDAT CMDT
GND
CMCK
MCK
GND
L8S CHASSIS J5
L7S W1 J641 P2 J3
ANT1
L3S ETE
MAIN-A ETE
L6S ET14
CTRL ET14
L5S CHASSIS J6 ETST
UNIT ETST
UNIT W2
L1S ETKY
ANT2 ETKY
L2S
L4S EXT TUNER
J3503 J1 MEMORY J2 J3504 J771 CHASSIS W13
PAT8
A9 A18 D7 D8
(PLL) P701 J211 PWRS
A17 D9
A8 D6 ICL
3LO
A7 A16 D5 D10 ICH
A6 A15 D4 D11
(RF) P741 J101 H5V
A14 D3 D12
A5 8V
T/R2IF
A4 A13 D2 D13 8V
A3 A12 D1 D14
14VA
A2 A11 D0 D15
14VA
A1 A10s GND GND 14V
A0 A10f GND GND
14V
GND GND HWR GND
14V
RESET GND RD GND 14V
BYTE GND RD GND 14V
VCC GND CSs GND
14V
GND GND
VCC CSf 14V
CHASSIS W9 J811 5V
14V 5V
14V HV
RF-A AGC NC
8V GND
UNIT
ALC GND
J111
T8V GND
RANT
NC
GND
NC GND
R8V GND
XVRT –5V
GND
NC GND
5V GND
TRVI
GND
RANS
SATV J861 CHASSIS W14
BLBV
CHASSIS NC
J951 W9
J2001 J2002 BLAY NC
BPF BSTB SCPL SQSS
BPFI GND
GND NC
GND GND MCK
MDAT MDAT MICE
GND B1
GND MCK MSND
GND B2
BSTB 8V
BPFO B3 SCPL
BLAV CHASSIS W8 J841 MICI
BLBV GND GND
J2003
SATV GND GND
B4
NC
B5 RANS GND
GND TRVI 14V GND
5V 14V PWRK
GND
UNLC
GND NC TMD
–5V PSEL SPE
R8V CON2 AFO
CON1
NC SPE
NC CON0 NC
T8V DRES NC
PSTB
ALC NC
8V 5V NC
AGC 5V 14V
NC 14V
14V
14V 8V 14V