Icom IC-7800 Service Manual Addendum page 521

Cutoff CONTROL PLL-A UNIT
RX-A
Q341/Q441
Q302
DTC114E
2SC5226
64.485-72.454999MHz
LOOP
FILSEL
AMP LPF HPF BUFF
Q220 FIL
Q301 2SK210
2SC5226
72.455-79.454999MHz
VA1S-2S
Q230 UNLKA
2SK210 (TO CPU)
Cutoff CONTROL
79.455-86.454999MHz
R1LO Q352 Q351
2SC5226 3SK294
1
Q240
BUFF
2SK210
LPF BUFF AMP
Q303
86.455-94.454999MHz
2SC5226
Q250
2SK210
MUTE_ 94.455-109.45499MHz
ATT HPF MMUT
T1LO CTRL
Q260
1 VA1S-6S
Q363 DTC114E 2SK210
Q364 DTA114E PDTA/PCKA/PSLA/PSTA/C2M1/C2M2
109.455-124.455MHz
T8V
MUTE_ VCO Q270
SW 2SK210
CTRL
Q592 2SB1123 Q280-Q285
Q593 DTC114E DTC114E
64MHz
T2LO
Q591
2SC4673
1
BPF AMP ATT
FI831
FL-356
Q801
Q831
64.491MHz D821
2SK882 2SK882
R2LO HSB88WS
1
ATT AMP BPF ATT ATT AMP ATT HYB
Q811
2SK882
MUTE_
R8V
CTRL
AMP
PDTA/PCKA/PST4A/DRES
Q832 2SB1123
Q833 DTC114E
T3LO Q680
(0.491MHz) IC652
2SC4081 0.6MHz
TC7S04
1
ATT BUFF HPF LPF D/A DDS
AMP
IC651
SC-1287
IC602
TC7S08
1
MKR
(100KHz)
MKRS
REF I/O
1
Freq=10MHz
LEVEL=-10dBm
Cutoff CONTROL PLL-B UNIT
RX-B
Q341/Q441
DTC114E
64.585-72.554999MHz
LOOP
FILSEL LPF HPF BUFF
AMP
Q220 FIL
Q301 2SK210
Q302
2SC5226
2SC5226
72.555-79.554999MHz
Q230 UNLKB
2SK210 (TO CPU)
VA1S-2S Cutoff CONTROL
Q351 79.555-86.554999MHz
Q352
2SC5226 3SK294
Q240
BUFF
2SK210
LPF BUFF AMP
Q303
86.555-94.554999MHz
2SC5226
Q250
S1LO 2SK210
1 94.555-109.55499MHz
MUTE_
ATT HPF MMUT
CTRL
Q260
VA1S-6S 2SK210
Q363 DTC114E
Q364 DTA114E PDTA/PCKA/PSLA/PSTA/C2M1/C2M2
109.555-124.555MHz
VCO
Q270
SW 2SK210
T8V MUTE-
Q280-Q285
CTRL DTC114E
Q580
2SC5226
Q592 2SB1123
Q593 DTC114E
ATT AMP 1/4
S2LO 64.591MHz 64.591MHz
1 LOOP
BPF AMP ATT HYB BUFF
FIL
Q561 Q541
Q591
2SC4673 2SC5226 2SK210
UNLKB
(TO CPU)
4.0369375MHz
IC1
NJM2058
RL141
NA-12W
AFAMP
AFO
SW
(MIC AF)
AFAMP
MAFS
INT SP
CHASSIS
IC140 IC105
UNIT LA4485 NJM2172
SPON
PWR
VCA
AMP
MAIN SP OUT
MUTE
RL140 PWR
VCA
NA-12W AMP
SUB SP OUT
ATT
AFGVM1
AFGVM2
AFGVS1
AFGVS2
IC182 IC180
IC181 NJM2172
FRONT UNIT TPA6111A2DGN
TC4W53
MPHONE AF
VCA
AMP
PMIX
PHONES SPHONE AF
VCA
AMP
PHML1
PHML2
PHI(TO FRONT CPU) PHSL1
PHSL2
IC201
10.4122038-10.4963312MHz
LMX2306TM
Q151
Q150 IC102
2SC4081
2SK210 TC7S04
PLL LOOP Phase
1/21
AMP
IC FIL detector
PDTA/PCKA/PST2A
Q152 IC101
SC-1246A
2SC4081
1/N
AMP
N=130-250
PDTA/PCKA/PST1A/DRES/C2A1
IC104
TC7S04
IC1
CD74HC4094M
1/400 DDS D/A
AMP
SERI/
STB1-4 PARA DATA/CK/CN21
100kHz Q702
2SC4215
IC2
TC74HCT7007A 40MHz
ATT BPF X4
SERI/
PARA
PDTA/PCKA/PST3A/DRES/C2A2
IC501
SC-1246A
OSS1/OSS2 I/O
Q580
2SC5226 CTRL
Q12/Q13
1/R DTC114E
ATT AMP 1/4
R=8
Q61/Q62
2SC4081 10MHz
IC503
64.000MHz TC7S04
AMP BPF
LOOP Phase
BUFF DDS AMP
FIL detector
Q561 Q541
2SK210 EXT-REF IN
2SC5226
UNLKA RL10
FTR-B4CA012Z
(TO CPU)
IC502
4.5MHz
TC7S04 ATT
4.0000000MHz
4.0306875MHz
AMP LPF D/A
EXT-REF OUT
LPF AMP
Q42
10MHz 2SC4215
OCK/ODAT/OCS
OSC UNIT
IC201
10.5813219-10.7408384
LMX2306
Q151 IC102
Q150
TC7S04
2SC4081 2SK210
PLL LOOP Phase
1/21
AMP detector AMP
IC FIL
PDTB/PCKB/PST2B
Q152
2SC4081
1/N
UNLKS
AMP
N=130-250 IC101 (TO CPU)
SC-1246A
STB1/CN21/CK/DATA/DRES
IC104
TC7S04
IC1
CD74HC4094M
DDS
AMP D/A
SERI/
STB1-4 DATA/CK/CN21
PARA
VA1S-6S
IC2 DATA/CK/STB4/DRES
TC74HCT7007A
SERI/
IC652
PARA
Q680
TC7S04
2SC4081
AMP DDS D/A LPF HPF BUFF
PDTB/PCKB/PST3B/DRES/C2B2
IC651
SC-1287
Q601
2SC4215
1/R
BUFF LPF
R=8
IC501
Q702
SC-1246A Q30
IC503 2SC4215
TC7S04 2SC4081
Phase
DDS ATT BPF X4
AMP AMP
detector
4.5MHz
AMP LPF D/A
IC502
TC7S04
IC250/IC260/IC290/IC310
IC251/IC261/IC291/IC311
TD62783A CD74HC4094M
A ACC(1)
SWITCH
SERI/ ALC
BUFF
MDAT/MCK/MSTB1/MSTB2
SIGNAL PARA
A ACC(2)
ALC
IC330/IC331
M62352AGP
B ACC(1)
CONTROL
ALC
D/A
MDAT/MCK/ASTB1/ASTB2
SIGNAL
IC104
B ACC(2)
ALC
MBEEP HEAT
AMP
ALC
SENS
MF1 R584
SBEEP FUN
AMP
CTRL
IC491 NJM2058 ALC TO MAIN TX PART
Q490 DTC114E
IC102 SQLM CHASSIS Q491 2SB1132
UNIT
Q100
2SJ144
SQL
AMP
SW
Q101
2SJ144
SQL
AMP
SW
SQLS
MAIN UNIT
ATTV
FI101
D401/D402
IC404
SFECV10.5MA5 MA2S111
CERAMIC SCOPE IN/OUT AGC
AMP AMP
BPF SDXD/SFSR1/SFSX1/SDR1/CLKR1 DET
IC403
UNLKA IC501 IC404 IC401
AD7650AST
(TO CPU) IC601
TMS320C6711C
VA1S-6S /RESET
DSP A/D AMP LPF AMP
fc=220kHz f=200kHz
11MHz
40MHz
AMP
IC602/IC603
SN74LVC1G04DCK
Q30
2SC4081
IC801
10MHz
AMP
LMX2306TM
IC803
TC74HCT7007A
FROMCPU
LEVEL
1/448
SDAT/SCK/SST2
CONV
REFON
REFOFF
Q841 Q842 Q843
Q821 2SC5226 2SC5226
2SC4081
2SK210
Phase LOOP
RL11 BUFF AMP BUFF
detector FIL
FTR-B4CA012Z
44.8MHz
BUFF
Q701
Q810
Q70 SMUT
2SC4406 2SC4406 MUTE_
2SC4081
CTRL
40MHz
BUFF 1/400 AMP
Q872
40MHz DTC114E
LPF AMP
Q22
10MHz 2SC4215
Q21
(10MHz OCXO)
2SC4081
IC821
X1 NJM2172
BUFF
CR-772
MICAMP VCA
CAL
IC495
SN74LVC1G08DCKR
IC91
AF
AD5260BRU50 A ACC(1)
SPDI(TO LOGIC) VCA
MOD AMP
IN BUFF
S/P DIF
MODVA
SPDO(FROM LOGIC)
OUT
B ACC(1) AF
VCA
FI101 MOD AMP
SFECV10.7MA5
IC50 PS7122AL
CERAMIC Q50/Q51 DTC114TU
RL50 OMR-109F
BPF
MODVB
EXRL1
SEND RELAY RL-CTRL
EXRL2
IC4
IC1 NJM2172
Q8
NJM2058
2SC4081
A ACC(1)
BUFF
BNDM AF
A ACC(2) DCAMP
11MHz BAND
B ACC(2) BNDS
DCAMP
BAND Q9
2SC4081
B ACC(1)
BUFF
AF
Q7
2SC4081
A ACC(2)
TRV
DACK TRVI Q5 DTA114E
ATT TRVCTRL Q6 2SD1619
(12.288MHz)
B ACC(2)
TRV A ACC(1) SEND
Q4
SEND -CTRL
2SC4081
A ACC(1)
RTTY
SAD(40MHz) RTKI A ACC(2)
RTTYKEY
SEND
B ACC(1)
RTTY
Q1
B ACC(1)
DTC114TU SEND Q52
2SC4081
10MHz SQLAM
A ACC(1) SQLCTRL
SQLS B ACC(2)
SEND
Q2
DTC114TU
MEMORY KEYER
B ACC(1) SQLAS
SQLCTRL /VOICE RECORD
SQLS
MUTE
KEY
KEY METER OUT
Q62
2SA1576
EXT IC60
NJM2058
ALC-AMP
REFV
SWR
IDHV
IDL IC61
ID
NJM2058
IDLV
VDL
DCAMP
APC
DCAMP ALCL
FORV
ALC
POCV
HFS/50MS/AMS
POWSET
Explanatory notes
SCOPE UNIT D1/D2
Q1
IC405 CPH5513
2SC4081
NJM2904M
AGC AGC
PIN-ATT
AMP AMP
0-60dB
Q202 Q201 FI201 Q2
FL-357 D101 2SC5551 BW=1MHz
D4 2SK882 2SK882
HSB88WS HSB88WS
XTAL
ATT AMP AMP ATT AMP BPF LPF
BPF
BW=6KHz fc=64.455MHz
fc=45MHz
Q101
2SC4673
LO
ATT LPF AMP
18.455MHz-
20.455MHz
44.8MHz
IC820
Q301 Q720
46MHz 2SC4673 3dB AD9857AST
2SC4406
40MHz
LPF ATT ATT DDS LPF HPF
AMP AMP
SDAT/SCK/SST1/SPS0/SYNCIO/RESET
12.288MHz
IC451 TC7S04
IC452 SN74LVC1GU04DCKR DSP-TX BOARD
MICV
IC460 IC230 CLK_ MCLK_
MMUT
TC4W53 AMP
MICPLAY /CAL
IC201
TC4W53 LIMIT IC341/IC371 IC401 IC551
NJM5534 AK5394 AD1855
AMP
L+
LPF A/D DSP D/A
AMP
MCPS L-
IC1
IC821
IC301 TMS320C6713
NJM2172
NJM5534
IC801/IC831
NJM5534 COMMAND IN
AF R+
DSPCK/DSPR/DX1T/DFRT/DFXT
AMP ANVOX
LPF
R-
AMP
X151 CTFL/DVOX (CW STASUS/VOX TO CPU)
CR-754
IC871
(30MHz) DSKY(CW/RTTY KEYING) FROMCPU
NJM5534
VCA MICREC
IC210
NJM2172
IC550
TA79L05
-5V -12V
-5V
A_AFA REG
IC3
TC4W53
AF
AMP
VCA
IC450
SI-3012KS
AAFVA(FROM CPU)
D1R2V_A +3R3V
IC2 1.2V
B_AFA
REG
IC5
TC4W53
IC451
SI-3012KS
VCA
AF
AMP D1R2V_B 1.2V
REG
AAFVB(FROM CPU)
ANTI VOX IC452
SI-3012KS
SENI(TO CPU)
D1R2V_T 1.2V
ASND(FROM CPU) REG
IC451 TC7S04
IC452 SN74LVC1GU04DCKR
DSP-A BOARD
SW MUTEI
SMET/RTTYM OUT
DSPCK/DSPR/DX1A/DFRA/DFXA
/CAL
COMMAND IN
EPAD
IC601/IC651 IC551 IC1 IC341/IC371
IC701
TMS320C6713
NJM5534 NJM5534 AK4394 NJM5534
L+
BUFF LPF D/A DSP A/D LPF
METS
L-
IC401
METM
AK5394
X151
CR-754
(30MHz) IC771 IC501
BU9480
DRESL
AGC
D/A
AMP
TNDA(FM TONE)
NSQA/VSQA(NOISE/VOICE SQL)
RTDA(RTTY DEC)
CROSS
IC100
TC4W53
IC451 TC7S04
DSP-B BOARD IC452 SN74LVC1GU04DCKR
SMET/RTTYM OUT
IC101 DSPCK/DSPR/DX1A/DFRA/DFXA
TC4W53 /CAL
COMMAND IN
IC601/IC651 IC551 IC1 IC341/IC371
IC701
NJM5534 NJM5534 AK4394 TMS320C6713 NJM5534
L+
BUFF LPF D/A DSP A/D LPF
L-
IC401
AK5394
RXMREC
X151
CR-754
(30MHz) IC771 IC501
RXSREC BU9480
DRESL
AGC
D/A
AMP
TNDA(FM TONE)
NSQA/VSQA(NOISE/VOICE SQL)
RTDA(RTTY DEC)
VOLTAGE LINE
TX LINE
RX LINE
COMMON LINE
LINE
DATA BUS
9 - 2
IC31
TX SCOPE
(MAIN UNIT)
IC1
RX-A SIF IN
(RX-A UNIT)
RX-B SIF IN
(RX-B UNIT)
SSA SSB
ATT
FROM CPU
IC601/IC651 IC701
NJM5534 NJM5534 TO MAIN UNIT
TX PART
IF
LPF TX36K
AMP
(TX IF36kHz OUT)
COMP METER OUT
DRESL
IC490
TC4W53 MON
(TX MONITOR)
IFIN_A
(RX-A)
MONS
CLK_ MCLK (12.288MHz)
AMP
IFIN_A
IC331
IC301 TC7W53
NJM5534
AMP
IC501
AGC DET
AMP
(RX-A)
AGC OUT
(RX-A)
CLK_ MCLK (12.288MHz)
AMP
IC331
IC301 TC7W53
IFIN_B
NJM5534
(RX-B)
AMP
IC501
AGC DET
AMP
(RX-B)
AGC OUT
(RX-B)