9 - 1
SECTION 9
BLOCK DIAGRAM
(PX-1981)
CHASSIS UNIT
DET BOARD
FILTER UNIT
SPLITR UNIT
FREQ DET
1
2
1
2
INPUT1
INPUT2
PA1
PA UNIT
Q1: MRF150
HV
LPF
VSWR DET
D15, D16: MBD701
IC5:
TA79L05
–5V REG
–13V
FOR
COUPLER
COUPLER
IMPEDANCE
DET
PHASE DET
D11, D12:
MD701
D3,D4,
D5,D6: MA77
IC2: MC10125L
IC4: TA74AC112
D13, D14: 1SS286
CAP SW
RELAY
MOTOR1
TUNER FAN
CAP SW
RELAY
MOTOR2
C-NET BOARD
RELAY
DRIVER
H-NET BOARD
Q9, Q10, Q11
Q13, Q14: 2SB1119
COIL SW
RELAY
MOTOR
DRIVER
RELAY
DRIVER
RELAY
DRIVER
L-NET BOARD
IC14: TD62783
IC15:
TD62083
Q12, Q13: 2SB1119
AMP
AMP
TUNER CPU
IC12: M38022M2-138FP
IC9:
NJM4558
IC9:
NJM4558
UNBALANCE
DET
COMBINER
EE-PROM
D1–D3:
1S953X3
IC7: X24C04S8
RESET CTRL
IC25: S-8045
ATT
PA2
PA3
PA4
Q1: MRF150
Q1: MRF150
Q1: MRF150
HV
SPLITTER
LIMITER
THERMO
DET
D4, D5:
RG3D
BIAS
IC1: TA7808
D3:
HSM88
DRIVE DET
IC21:
NJM4558
T13
PA FAN
HV
COMBINR
UNIT
Q5:
2SB1119
IC3: NJM4558
SWR AMP
REF AMP
IC31: NJM4558M
IC1: NJM3403
FOR AMP
FORT
REFT
IC2: NJM4558
IC3: NJM4558
FAN
DRIVER
SEND
SELECT
BUFF
SEND
SEND1
IC16:
µ
PD4069
IC28: TC4W66F
Q7: 2SB1119
Q3: 2SB1119
T13V REG
T13
IC5:
TA7805
+5V REG
IC8:
BA9700
–13V REG
REGURATOR
H12 (+12V)
ALC
SELECT
SEND2
Id CTRL
ALC1
ALC2
RL2: AHY103
IC1: NJM3403
IC17: X24C01AS
IC4:
NJM4558
ALC AMP
ALC METER
SWR/DRIVE
CTRL
RELAY
DRIVER
IC19:
TD62783
IC1: NJM3403
RF POWER
CTRL
COMPARATOR
RF AMP
LIMIT AMP
Q34: 2SC2714
Q35: 2SK302
IC30: TC7S14
FAN DRIVER
MAIN UNIT
FOR/DRIVE
PROTECT
DRIVE AMP
IC1: NJM3403
IC34: TC4S584F
IC21:
NJM4558
CPU DRIVE
DET
DEVIDER
IC20: TC74AC393
IC1, IC2
IC3, IC4:
µ
PD4094
MAIN CPU
IC26: TMP90PM38F
5V
EE-PROM
CI-V
SHIFT
REGISTER
IC7: BU4021
IC6: TA7805
+5V REG
5V
POWER
IC8: TC7W74
IC9: TC4S584
RELAY CTRL
D/A
IC5: M62354
OUTPUT
DATA
EXPANDER
METER1
METER2
METER
LAMP
1-2
H12
(+12V)
TUNER
Id
INPUT1-2
TEMP
LED
LED
AUTO
ALC
Po
Vd
SWR
1.8 – 50
BAND
ANT1-4
AMP/PROTECT
TRANSMIT
FRONT UNIT
SW BOARD
ANT-SW
UNIT
RELAY
DRIVER
12 V
5 V
–13 V
100/200 V
HV
ANT
UP
DOWN
TUNER
AMP/
PROTECT
INPUT 1/2
METER 1
METER 2
REF
COIL SW
RELAY
(+12V)
TRC
IC18:
TD62783
IC2: NJM4558
ANT1
1
1
1
1
2
2
2
2
–5V
ANT2
ANT3
ANT4
HV
S12
9-1 IC-PW1
Summary of Contents for IC-PW1
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 VOLTAGE DIAGRAM 18 Mar 2011 ...
Page 24: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 Jun 2010 ...
Page 42: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 16 VOLTAGE DIAGRAM 18 Apr 2010 ...
Page 96: ...HF 50 MHz ALL BAND LINEAR AMPLIFIER iC PW1 ...
Page 175: ...MNF F1 EP2 TO REGRELAY BOARD MLF EP1 F2 TO REGRELAY BOARD EP35 I N FG 8 19 FIL AC BOARD 8 20 ...
Page 201: ...A 5449MZ S 3 1999 Icom Inc 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan Count on us ...