Block Diagram - Icom IC-A22 Service Manual

SECTION 7

BLOCK DIAGRAM

D5003
Q5026,Q5005 IC5002
MA111
2SC4211(X2) TC4W53F
ANL
AF AF
FIL SELECT
Q5008
UNR9210J(A22/E)
UN9210(A3/E)
ANL
SW
SQL
IC5003
AF
TA7368P
VOL
AF
AMP
R5082
IC5008
Q5006:
2SB1201 TC4S66F
Q5007:
SIDET
2SC4211
MUTE
D5010:
MA111
R5087
D5013:
MA111
AF
REG
VCC
INT MIC
MIC
Q6003: 2SC4211
Q6004: 2SB1132
D6002-6005:
LN1371G
D6006,6007:
SML-110MT
(PTT)
PTT UNIT
(LIGHT)
(ANL)
MAIN UNIT
Q5030 Q5003 Q5002
Q5004 FI5001
2SC4215 2SC4215 2SC4215
2SC4211 CFWS455D
AM IF IF IF CERAMIC
DET AMP AMP AMP BPF
AGC
AMP
Q5010
Q5009
2SD1819
UNR9210J(A22/E)
UN9210(A3/E)
AGC
AMP
NAV
SW
IF IN
Q5031
2SD1819
AF(FM) OUT
IC5007
TA75S393F
SOUT
CMP
SQL
VOL
IC5004 IC5005b
BA330BF TC75W51FU
ALC
AMP
AMP
PTT EXTMIC
R5098
CTRL POWER CTRL
Q5027: Q5028: 2SB1132
2SA1622 Q5029: UN9211
D5008: D5009: MA133
MA111 D5014: MA111
MIC
MUTE
Q5013
XP4315
5V +5 R5
+5 5V +5 R5
VCC
REG REG REG REG
IC5006 Q5014: 2SB1132 Q5016: 2SB1132 Q5018: UNR9110J(A22/E)
S-812C50AMC-C3E Q5015: 2SC4211 Q5017: 2SC4211 UN9110(A3/E)
Q5019: 2SB1132
Q5020: 2SC4211
PTT
AF ON
SQL
BEEP
ANL
+5
VCC
Q6001: IC6003:
XN4601 S-80845CLMC-B66-T2 RESET
BUFF
D6001: Q6002: 2SC4211 DET
MA111 D6002: MA111
LOW BATT
CPU
BACK
IC6001
LIGHT
IC6002
HD404829B96TF except [IC-A3]
24LCO8BTI/SN
HD4074829TF [IC-A3] only
EEPROM
LCD
KEY INITIAL
MATRIX MATRIX
FI14001
Q4003
FL-221
2SC4215
Q4002
or FL-203
3SK151
IF
IF XTAL
AMP BPF
AGC
RF-AGC
TUNE
RXLO
MOD
TXLO
X5001
CR-458
TX/RX D4010: MA77
SW D4021: MA77
IC5001
TA31136FN
X5002
CDBM455024
Q4018
XP4601
WX
BUFF
Q4017: UNR9110J(A22/E)
UN9110(A3/E)
Q4019: UNR9210J(A22/E)
UN9210(A3/E)
IC5005a
TC75W51FU
LPF
EXT
CLONE
SP
JACK
SIDET SIDET
CTRL
Q4020
XP4601
EXT
MIC
JACK
TRC
SP
DOWN
UP
(DIAL)
IC6004: TC4S69F
Q6005: 2SC4211
CLONE
Q6005: UN9211
CTRL
Q6007: 2SA1622
D6003: MA111
NAV
IC6108
VORC
NJM2903V
VORS
CMP
VORO
CMP
Q6110
UNR9213J(A22/E)
UN9213(A3/E)
INV
LOGIC UNIT
RF UNIT
D4001: MA77
Q4001
D4008: MA304 D4006: MA304
D4002: MA77
3SK230
D4009: MA304 D4007: MA304 D4003: MA77
RF ANT
BPF BPF
AMP SW
Q4005 Q4007 IC4002
D4012 D4013 D4004: MA728
2SC4403 2SC3357 SC-1303
1SC246 1SV246 D4005: MA728
MOD APC PWR PWR
PRE
AMP
ATT ATT DRIVE AMP DET
Q4005 Q4004
APC
2SC4403 2SC4403
AMP
Q4010: XP1401
Q4014: 2SC4211
BUFF BUFF
X4001
CR-456
Q4015 Q7003
2SC4403 2SC4403
TUNE LOOP PIL
BUFF BUFF
BUFF FIL IC
IC4001
µPD3140GS
LV
PLL
DATA
WX SHIFT
Q4016
UNR9210J(A22/E)
UN9210(A3/E)
5V
T+5 Q4021
2SC4116
T5 TMUT
REG
Q4012: 2SC4211
Q4013: 2SB1132
D4016: MA111
Version RX Frequency TX Frequency
#01, #07 161.65-163.275 MHz
CHASSIS
Others 108.00-136.975 MHz 118.00-136.975 MHz
Q6108 IC6105
XP4315 NJM2902V
NAV +5V
BIAS BUFF
CTRL
BPF BPF
IC6107 IC6106
NJM2904V NJM2903V
PHASE LIMIT
LPF FM DET
SHIFT AMP
Q6109: 2SC4211
D6116: MA111
LEVEL
DET
VOR circuit
(IC-A22/E only)
7 - 1
(ANT)
LPF
VCO BOARD
Q7001: 2SC4226
Q7002: 2SC4226
VCO
D7001: MA304
D7002: MA77
SHIFT
SHIFT
CTRL
5V
RIPPLE
FIL
DETO
RX
TX
COMMON
DATA BUS