Icom IC-7700 Service Manual page 102

MAIN UNIT
KEY
IC701
KEY
SPDI(TO LOGIC)
IN
BUFF SPDI_to_LOGIC
Q2001
SN74LVC1G08DCKR
S/P DIF
2SA1576
OUT SPDO_from_LOGIC
EXT
ACC(1)
ALC-AMP
IC721:PS7122A L ALC
Q721/Q722:DTC114Tx2
RL721
EXRL1 ACC(2)
EXRL1_from_LOGIC
ALC
RL-CTRL
SEND RELAY
EXRL2
EXRL2_from_LOGIC
Q2055:DTC114T
Q2056:DTA144E
ALC
TIME-CTRL
I C2051
B NDV(FROM DAC )
ACC(2)
DCAMP
BAND
NJM2058
AM S
Q31 2SC4081
Q2051:2SC1576
Q2052:DTC114T
ACC(2) TRVI
TRVCTRL TRVI_to_LOGIC
TRV
TIME-CTRL
Q11 2SC4081
ACC(1) RTKI UNS B
RTKI_to_LOGIC
RTTYKEY
RTTY
Q731 DTC114T
ACC(1) SQ S
SQLA
SQLCTRL
SQLS
Q21:2SD1619/Q22:DTA114E
Q1:DTA114E
SENI SENI_to_LOGIC
ACC(1) SEND
SEND -CTRL ASND
ASND_from_FRONT_LOGI C
ACC(2)
SEND
VOXAF_to_LOGI C
Q810:2SC4081
D161:MA8091
MMUT FROM SIRI/PARA)
MIGV(FROM_DAC)
IC171
+8
NJM2172
REG
Q 201:DTC114E
IC201:TC4W53
MICAMP VCA
FROM_FRONT_MIC_CONNECTOR
AF MICREC
MREC_to_LOGI C
VCA
AM P
8V
Q211:DTC114E
IC211:TC4W53
AF
ACC(1)
VCA
MOD AM P
MODV(FROM DAC)
M CPS(FROM SIRI/PARA)
IC191 NJM 2172
MPLAY_from_LOGI C
MICPLAY
IC241
IC231 NJM2172
U PC4570
2SC408 1
Q761
AF AF
ACC(1)
BUFF VCA
AF AM P AM P
AAFV(FROM DAC)
(MIC AF) AF ANVOX
AFO_to_FRONT
AM P
INT SP
Q281
DTC114T
AF AFON
MUT E
CHASSIS
IC281 LA4485 IC311 NJM2172
SPON(FROM S/P)
Q291
PWR
LPF VCA
AM P
MUTE
MAIN SP OUT
CPH3403
RL261 CPH3403
Q261:2SC4081
PHONE AF
LPF VCA
AM P
FRONT UNIT
Q301
RAMS
Q282
RIPPLE
+15V
PHONES FIL
AFGV1(FROM DAC)
AFGV2(FROM DAC)
PHL1(FROM DAC)
PHL2(FROM DAC)
PHI_TO_FRONT_CPU
SKYS_from_LOGIC
I C2001 NJM2058
REFV SWITCH
SWR
REFV_from_CTR L
SIGNAL
IDL_to_LOGIC
IDHV HFS/ 50MS/ AMS/ MMUT/ MCPS/ SMUT/ SPON/ UNSB/ FMS/ AFON/ RAMS
IDHV_from_PA
I C2051
ID
IDLV NJM2058
IDLV_from_PA
CONTROL
SIGNAL
DCAMP
VDL_to_LOGIC
MICV/ DRIV(RF)/ POCV/ BNDV/
APC
SATT(SCOPE)/ FANV/ MODV/ AAFV
DCAMP
ALCL_to_LOGIC
FORV CONTROL
FORV_FROM_CTRL
SIGNAL
ALC
POCV
POCV_FROM_DA
PHL1/ PHL2/ AFGV1 /AFGV2
I C1651
ALC-RES T8V&FMS
D1R2V 1.2V
REG
Q2058:2SK3018
Q2059:2SC4081 TLV1117
I C1361
HFS/50MS/AM S
POWSET
(FROM SIRI/PARA) -5V -5V
REG
Q2057:2SC4081
Q2060:UMH11 ALC TO RF TX PART TA79L0 5
RFALC
IC741
ACC(2) +8V
8V REG
TA78L0 8
I C122 1
NJM5534
LPF
IC1251
AK5394
IC1111:TC7SH08
I C1201:TC7W53
I C123 1 IC1112:R3111N111
Q1201:DTC114E I C1211
NJM5534
NJM5534
A/D RESET
MUTE
BUFF LPF
I C131 1
NJM5534
I C1001
TMS320C6727
IC221 DSP
LPF
U PC4570
A/D
LIMIT DSP_MOD IN I C132 1
I C1331
AMP NJM5534
NJM5534
IC1131:TC7SHU04
BUFF LPF
I C1132:TC7SH04
X 1141:CR-754
I C1101
F-ROM
AT29LV040
I C1351
UPC4570
AGC
A/D
AMP
I C1451
NJM2058
I C1431
LPF
A/D
BUFF
RXREC_to_LOGIC
TC7S04
I C1401
BUFF LPF
AK5383
Q351
IC331
U PC4570 2SJ364
SQ L RXAF
AMP
SW
IC361
SQLS_from_LOGIC
DCAMP
NJM2125
RXPLAY_from_LOGI
TX IF
(36kHz)
IC1801/IC1841
SERI /
PARA MDAT/MCK/MSTB1
CD74HC4094x2
I C1921
MDAT/MCK/ASTB1
D/A
M62352
I C1931
NJM2058
BUFF
+3R3V
+3R3V_FROM_DCDC
-12V
-12V_FROM_DCDC
+15V
+15V_FROM_DCDC
RX IF
(36kHz)
RX_IF_FROM_RF
IC1601 IC1611
AK4335 BA15532
AGC_OUT_TO_RF
D/A BUFF
TONE_DET_OUT
D/A AMP _TO_LOGIC
IC1501
IC1511/IC1521/IC1531
AD1854
NJM5534x3
D/A LPF
I C1571
RX AF
D/A BUFF
NJM5534
I C1441
12.288MHz
MCLK_FROM_PL L
AMP
SN74LVC1GU04
AGC_DET_FROM_RF
9 - 2