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

10-7 PA AND FILTER UNITS

C61 0.001
RX 13.7V
TX 13.6V
C22 0.001
RX 0V RX 0V
TX 1.77V TX 0.68V
R15 C21 0.001
100
RX 13.8V
TX 13.6V
C41 R10 R21 10
0.001 680
Q2
L14
2SC1972 R20 10
PA J1 R2 LR-360
W1 PAI 18
L4
Q1 LR-143
L9
C1 2SC1971
EXC-ELDR25C
0.1
L10
EXC-ELDR25C
L1
R9 1 R23 10
LR-361
R24 10
Q3
2SC1972
C23 0.001
R16
100
C24 0.001
W29
C62 0.001
C20
0.1
Q8
2SD1585K
MEASUREMENT CONDITIONS
VOLTMETER :50kΩ/VDC
OSCILLOSCOPE :20MHz 1MΩ25pF
SUPPLY VOLTAGE :13.8V
DISPLAY :14.1MHz USB
PAT8
Q13 13.5V
RX 1.0V 2SB1201
TX 7.0V
R52
10 RX 0V
TX 7.8V
C101
0.0047
12.2V
RX 13.6V
R56 TX 13.5V
RX 0V
10k TX 13.4V
R53
1k
CHASSIS
Q12
J11 R51
MF1 2SB1201
56
14V
+ MF+ MF+
M D10 CP1
MF- MF-
MA185
- C96
220
C102
0.0047
D9
RX 13.5V DAP222
TX 12.7V CP2
R55
10k
RX 12.7V
Q11
TX 0V
2SC4081
Q10
2SC4081
RX 0V RX 0V
TX 0.75V TX 0.3V
10 - 7
CP11 CP12
J2
C123 PA P2 J1
18p PAO W3
1 PAO
RX 13.8V
TX 13.6V 2
C118
R41 L29
W14 120p
5.6 LA-548
R32
RL13 C83
0.68 RX 0V 6p
AG201344
TX 0.65V
R33
0.68
50MHz
Q4
2SC5125
C87
0.0047
L5
LR-216
Q5
R34 C18
2SC5125 RL5
0.68 TB1-160 100p
R35
0.68
7MHz
J10
R42
5.6 C46
0.0047
L24 L25
LR-387 LA-388
RL11 C37 C39
TB1-160 27p 27p
24MHz
28MHz
D2 D3
MA29B MA29B
C52
C18
C17 CP39 0.0047
0.047
0.047
R31
1k
L8
LR-240
CP40
RL7 C30
R29
TB1-160 18p
1k
14MHz
EP4 CHASSIS C48
PHV W16 0.0047
F2
EP5
CHASSIS
PGND W17
F3
RL1 D7
AJV5341 DAP222
CP503 13.8V
4.4V
J3
CHASSIS W13
PAT8 CHASSIS
PHV
W16
PWRS
ICL W9
CP504
ICH
H5V CHASSIS
Q9 PGND
UN9211 W17
8V
13.8V
8V W10
14VA
14VA
14V
14V
4.9V
IC1 14V
TA7805F
14V
14V
I O
G 14V
CP502
14V
5V
CHASSIS FGND
EP502
IC2 5V
4.9V
R44 TA7805S HV
3.9
NC
I O
G GND
GND J4
GND ACS1 ACS2
3 6
IC3 GND
MC78T08C 7.9V GND GND
GND
2 5
GND
I O
HV HV
G GND
1 4
GND
GND
FHV EP501
GND
CP501 13.8V
PA UNIT
CP13
CTIN
L30 L31 L9 L10
LA-550 LA-547 LA-481 LA-480
L5S
RL14 RL10
C85 C86 RL9 C33
15p 22p AG201344 TB1-160
TB1-160 18p C35
39p
18MHz
21MHz
L8S L6S
C88 C50 C51
0.0047 0.0047 0.0047
L6 L45 L46
LR-216 LR-394 LR-218
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
L26 L3 L4
LR-388 LR-149 LR-138
C41 RL12 RL3 C10 RL4
7p TB1-160 TB1-160 300p TB1-160
C12
100p
3.5MHz
L7S L2S
C53 C44 C45
0.0047 0.0047 0.0047
L28
L1 L2
LR-241 LR-295
LR-294
RL8 RL1 C2 RL2
TB1-160 TB1-160 150p TB1-160
C63 C5
47p
120p
C3
1.9MHz 330p
L5S L1S
C49 C43
C42
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 FILTER UNIT
CP10
LCD
L501 L502
LR-386 LR-386
CP14
J2
(CTRL)P1
1
2
J5 CHASSIS W11
FRONT J101 J601 FRONT W5 J1 GND
5VF
EP1 5VF 5VF 5VF
MAIN GND
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
RUP RUP GND GND
VHF
PBT
5VF 5VF GND GND GND
RDN RDN GND GND
BOARD NC
GND GND 14V
GND GND 14V
J451 P352
GND GND 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
SSP + GND
J1 FRONT W6 J201 NC SP1 GND
-
F5K F5K SSPE J3
SSPE
F4K F4K
TUIN
F3K F3K
FRONT W3
F2K F2K J941 J1 J4
F1K F1K PHE PHE TUNER
TUOT
SPEK SPEK AFO PHO BOARD
EXTK EXTK PHE PHE
J2
FILK FILK PHNI PHNI
AMK AMK GND GND
GND GND
CWK CWK 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
FRONT W1
J921 J1
DASH DASH
FRONT W7 J221
J1 DOT DOT
SPLK SPLK GND GND
1K 1K GND GND J2
3K 3K GND GND
7K 7K GND
GND
10K 10K GND GND
14K 14K GND
GND
KEY
18K 18K GND GND
21K 21K GND GND
BOARD
24K 24K
28K 28K
J301 CHASSIS W10
50K 50K
GENK GENK LFMD
FINK FINK LMFD
SRES
MPWK MPWK
MPRK MPRK YOBI
R
GND GND DISPLAY
J2 FRONT W8 J241 G
BOARD
MUPK MUPK B
MDNK MDNK HSYNC
MWK MWK VSYNC
GND
MCLK MCLK
TSK TSK GND
GND
XFCK XFCK
LOCK LOCK GND
NC
PBTK PBTK
NOTK NOTK -8V
KI4 KI4 -8V
NC
5VF 5VF
PLL
KI3 KI3 +18V
W701
NC
LDV LDV W702
J701
LOCD LOCD 14V
14V 3LO
TXD TXD
RXD RXD 14V
NOTD NOTD NC PLL
PBTD PBTD NC UNIT
PLL
GND GND
J351 W351
GND GND J321 CHASSIS W14 W352
1LOA
GND GND
14V
GND GND 14V
TEN-KEY PLL
GND GND
14V J651 W651
BOARD
GND GND NC W652
1LOB
NC
NC PLL
J2 FRONT W2 J322 W81
NC J81
CHASSIS W8 J1 W82
MICI MICI PHE
2LO
M8V M8V AFO 8V
MUD MUD PHE NC PLL
SQLS SQLS TMD 5V W851
J851
MSND MSND W852
PWRK 5V
MKR
GND GND GND PSTB
MMICE MMICE
GND DRES PLL
AFO AFO GND CON0 J801 W801
NC NC GND CON1 W802
S3LO
MIC BOARD
NC NC MICI CON2
PLL
8V PSEL
W901
J901
MSND UNLC W902
MICE 14V S2LO
AFO 14V
SQSS NC
NC
GND
NC GND
J1 M1
CTIN
P1
J10
T14V
T14V
PW
J8
PW
PX
GND PX J352
PY
GND
PY SSP
PZ
3.5M PZ
7M J11 P2
M2 DSP SPE
T14V
10M T14V
AW
14M AW J201 J2001 J2002 J202
AX
18M
AX GND 8V AGRS 3R3V_d
AY
24M AY FMTL 8V GND 3R3V_d J891 CHASSIS W10
AZ
VHF GND -5V M5V_d GND
AZ NC
GND GND -5V GND NSQO NC
NC GND -8V DSDR DPGI
14V
J741
14V J7 CHASSIS W12 GND -8V NC MODS 14V
14V 14V 14V DRAF GND NC FMNS
14V
CO3 14V 14V DTAF AGC MCK CALS NC
CO2 14V 14V GND GND DSFW ACKS
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 GND NC GND GND GND GND GND
GND -8V -8V
GND
P3 J3 GND NC GND
FORV FORV YSYNC
TUIN
REFV
REFV HSYNC
J4 ANTS ANTS B
P4
DRES
DRES G
TUOT
GND GND R
ISTA ISTA
J2 YOBI
IKEY IKEY DRES
RFRX
GND GND
LMFD
FSTB
FSTB LFMD
J13
MDAT CMDT
GND
CMCK
MCK
GND
L8S CHASSIS J5
W1
L7S J641 P2 J3
ANT1
L3S ETE
ETE
L6S MAIN ET14
CTRL ET14
L5S CHASSIS J6 UNIT ETST
ETST
L1S UNIT W2 ETKY
ANT2 ETKY
L2S
L4S EXT TUNER
J3503 J1 J2 J3504 J771 CHASSIS W13
MEMORY
PAT8
A9 A18 D7 D8 PWRS
(PLL)P701 J211
A8 A17 D6 D9
ICL
3LO
A7 A16 D5 D10 ICH
A6 A15 D4 D11
(RF)P741 J101 H5V
A14 D12
A5 D3 8V
T/R2IF
A4 A13 D2 D13
8V
A12 D1 D14
A3 14VA
A2 A11 D0 D15 14VA
A1 A10s GND GND
14V
A0 A10f GND GND 14V
GND GND HWR GND
14V
GND GND
RESET RD 14V
BYTE GND RD GND
14V
GND CSO GND
VCC 14V
VCC GND CS3 GND 14V
CHASSIS W9 J811 5V
14V 5V
14V HV
AGC NC
8V
(CTRL)P2 J101 GND
ALC GND
RX J111
T8V GND
RANT
RF NC GND
W741 NC GND
J741
W742
R8V GND
T/R2IF XVRT
-5V GND
NC
GND
RF
5V GND
UNIT TRVI
GND
(PLL)P351 J561 RANS
SATV J861 CHASSIS W14
1LOA
CHASSIS BLBV NC
J951 W9 BLAY NC
(PLL)P651 J661 BSTB SCPL SQSS
MCK GND AFO
1LOB
MDAT
MDAT MICE
GND MCK MSND
BSTB 8V
(PLL)P81 J901 SCPL
BLAV CHASSIS W8 J841 MICI
2LO
BLBV GND GND
SATV GND GND
(PLL)P851 RANS NC GND
J481
14V
TRVI GND
MKR
5V 14V PWRK
UNLC TMD
NC
(PLL)P801 J841 -5V PSEL SPE
CON2 AFO
S3LO R8V
NC CON1 SPE
NC CON0 NC
(PLL)P901 J831 DRES
T8V NC
S2LO ALC PSTB NC
5V
8V NC
(PA)P1 J151 AGC 5V 14V
NC 14V
PAI 14V
14V 8V 14V