Ctrl-A Unit - Icom IC-756PROIII Service Manual

A
FI1701
Q1751
FL-381
3SK131 (64.455MHz)
XTAL
IF
B COMB
AMP BPF
(BW=15kHz)
Q1008
2SC5551
64.455MHz
C
AGC
T8V
FI2002 FI2003 Q2201
D2101
SFECV13.35MAS SFECV13.35MAS 2SK882
HSB88WS
CERAMIC CERAMIC
ATT
BPF BPF
D2002
ATT
MA2S111
IC2001 TA31136FN IC2002B
NJM4558M
AGC AGC
DET
AMP
FI2001
CFJ455K8
CERAMIC
BPF
D
E
F
S3LO 12.79-12.99MHz
Q71 2SC4081
Q81 2SC4405
PSMT
X2
Q802 IC801 Q801
2SC4117 SC-1287 2SC4081
BUFF BPF D/A DDS AMP
PST7
IC901
Q903
LC7153M
2SC4117
77.8MHz
LOOP PLL
BUFF HPF
G
FIL IC
Q902
2SK508
PSMT PST6
IC902
TC7W08F
SW
DATA
IC701 Q701
SC-1287 2SC4081
H BPF D/A DDS AMP
8MHz
PST5
IC1
BU4094BCF
PSEL SERI
PST1
PARA
PSTB
PST2
PST3
PST4
PST5
PST6
PST7
D1201 CPH5513
Q1201,Q1202
D1203 1SV263
Q1208
Q1203-Q1206 2SK1740
D1204 CPH5513
2SC5551
2SK1740
IF PIN
RF
LPF
AMP ATT AMP
A
Q1207 D1205
2SC4081 MA2S111
SPLIT
DRIVER
BLAV
B
D1001 CPH5513
D1002 1SV263 Q1001,Q1002
Q1003-Q1006
D1003 CPH5513 2SK1740
2SK1740
PIN
IF RF
LPF
AMP ATT AMP
Q1209
MMBFU310
AMP
D1004 Q4301,Q4303
Q1007
2SC4081 MA2S111 XP4311 PRE2
8V
DRIVER
DRIVER
BLBV
POFF
Q1551
D1451
2SK882
HSB88WS
IF 64.455MHz
LPF
LPF
AMP
IC1401
µPC2708TB
ALC R8V T8V
T8V
Q1301
Q2202 D2201
2SK882 1SV263 2SC5551
IF IF PIN LO
LPF
AMP AMP ATT AMP
SAGC
Q2203
2SC4081
IC2002A
NJM4558M SATV
DRIVER
LO
AMP SCPL LPF
AMP
Q1101
Explanatory notes
2SC5551
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
VCO-B
Q521 2SK508
Q601
Q661
D521 KV1770S
2SC4403
DTC114EE
D522 KV1770S
BUFF
BPF MUTE
Q522 2SC4213
VCO
SW
Q651
DTA114EE
Q501 2SK508
PBMT
BPF
D501 KV1770S
PBFS
CTRL
D502 KV1770S
PST4
D451
Q502 2SC4213
MA357
IC681 Q452 Q451
VCO
LMX2306TM 2SC4081 2SK210
SW
DATA
PLL
BUFF
Q551 2SK508 IC
D551-D554
MA338 × 4
Q402
2SC4081
IC402
Q552 2SC4213
TC7S04F AMP
VCO LOOP
SW FIL AMP
Q571 2SK508
D571-D574
FI401
MA338 × 4
CFEC10,8MD11
CERAMIC
Q572 2SC4213
D/A
BPF
VCO
SW
Q421,422,423,426
UMD3N
DRIVER
LPF
VB1S
VB2S
Q52
Q51
VB3S 2SC4081
2SC4403
VB4S
BUFF
X52
CR-338.
CAL
32.00056MHz
IC682 TA78L05F
+5
8V 5V PLLB
Q2 UMD3N REG
LEVEL
UNLC
CONV
PREAMP BOARD
Q4203,Q4204
XP4311
14V
DRIVER
PRE1 B0
0.03-1.6MHz
LPF ATT
Q4201
2SC5551
Q4202
BPF
2SC5551 1.6-2.0MHz
BOARD
BPF HPF
PRE
AMP
2.0-3.0MHz
Q4302
B1
BPF
2SC5551
PRE
B2
AMP
3.0-4.0MHz
BPF
B3
4.0-6.0MHz
BPF
B4
6.0-8.0MHz
RF
ATT
AMP BPF
B5
8.0-11.0MHz
BPF
T8V
B6
11.0-15.0MHz
BPF
B7
15.0-22.0MHz
BPF
B8
22.0-30.0MHz
BPF
B9
50.0-54.0MHz
HPF
B10
30-50MHz
54-60MHz
BPF
B10W
50.0-54.0MHz
BPF
TX-B10
MKRS
1LOA 64.485MHz-124.455MHz
VCO-A
Q201 2SK508
Q301
D201 KV1770S
2SC4403
D202 KV1770S
Q424
UMD3N
BUFF
Q202 2SC4213
DRIVER
VCO
PST2
SW
Q221 2SK508 IC381
D221,D222 KV1770S × 2
LMX2306TM
DATA
LOOP PLL
FIL IC
Q222 2SC4213
VCO
IC401
SW
SC-1246A
IC102
TC7S04F
PHASE Q251 2SK508
LOOP
D251-D254 MA338 × 4
DET
FIL AMP
Q252 2SC4213
FI101
VCO
CFEC10,8MD11
SW
CERAMIC
DDS
BPF
Q271 2SK508
D271-D274 MA338 × 4
Q121-Q123 UMD3N
Q126 UMD3N
DDS Q272 2SC4213
VCO DRIVER
SW
1/4
Q403
VA1S
2SC4081
VA2S
AMP VA3S
PST2 VA4S
8V
RX ANT
LPF
RANS
ATT ATT
12dB 6dB
RL101
RL103 RL102
ATN203
ATN203 ATN203
Q101
UNR9211J
ATT2 ATT1
D151 Q14,Q16 DTC114EU × 2
1SV307 Q13,Q17 DTA114EU × 2
MUTE XVRT
TRVI
Q151 UMH11N
Q152 UNR9211J
MUTE
Q201 2SA1576
CTRL
Q202 UMH11N
Q203 UNR9211J
T8V
PAI
YGR
ATT LPF ATT
AMP
RX
IC201
µPC1678GV
IC401,IC402,IC403
CD4094BPWR × 3
TX-B10
SERI
B0-B10 DRIVER MCK
PARA
MDAT
B10W
BSTB
POFF IC301,IC302
TD62783AF × 2
PRE1
Q351,Q352
PRE2
UMH11N × 2
RANS
Q353-Q357
ATT1 XP4311 × 5
D301-D303,D351,D352
ATT2
DAN222 × 5
RF-B UNIT
Q361
IC191
DTC114EE
TC7S08F
Q2
BPF MUTE MUTE 2SC1972
Q1 Q3
2SC1971 2SC1972
Q124
Q351
UMD3N PRE DRIVE
DTA114EE
DRIVE AMP
PAMT
BPF DRIVER
PAFS
CTRL
Q151
2SK210 BIAS
Q152
D151
2SC4081
MA357
LOOP
BUFF
FIL
Q102
IC101
2SC4081
SC-1246A
AMP
PHASE
DET
D/A DDS MKRS
PST1
DULS HV
DDS
IC1
TA7805F
+5
H5V
Q103
REG
2SC4081
AMP 14V
IC2
TA7805S
+5
5V
REG
IC3
MC78T08C
IC382 TA78L05F +8
8V
REG
+5
5V PLLA
REG
CON0
CON1
PA UNIT
CON2
9 - 2
ANT2 ANT1
CHASSIS
TUNER-A UNIT
ANTS
D15
CURRENT
HSM88AS
DET
TUNER
ON/OFF
CTRL TUNING
NET
Q12 DTC114EU
Q13 DTA114EU
TX/RX
CONRT
THRU
IC5
LPF M38022M2-138FP X1 CR-569
6.144MHz
D8,D9 RESIST
HSM88AS × 2 DET
CPU
DATA
IC13
PHASE TA7805F
D4
DET
DWA010
+5
14V 5V
REG
D1,D2 SWR
FOR
HSM88AS × 2
DET
REF

CTRL-A UNIT

CTIN
Q4
2SC5125
Q5
2SC5125
1.8MHz
PWR
LPF
AMP
L1S
3.5MHz
LPF
BIAS
L2S
Q8
2SD1585K
5/7MHz
LPF
FAN L3S
CTRL
Q10 2SC4081
10MHz
Q11 2SC4081
Q12 2SB1201 LPF
Q13 2SB1201 L4S
14MHz
LPF
L5S
18/21MHz
LPF
FUSE
L6S
(5A)
24/28MHz
LPF
L7S
50MHz
Q9 UNR9211J
D7 DAP222 LPF
L8S
RELAY
CTRL
COMMON
13.8V
FILTER
FILTER-A UNIT