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TX
UNIT
SCK,SDTO,DA1STB,TPLSTB
I TONE
TXAF
PATEMP
TLV
TUNLK
FWSWR
RVSWR
IC4D
TX-
TONE
FIL
Q1: XP1214
CTDTO
from CPU
IC4: NJM2902V
SPLAT
FIL
IC4A, B, C
IC3: NJM2902V
LIMIT
IC3A
SIG
MIX
IC3B
PRE-
EMP
IC2C
CP2
MICO
HPF
IC2A, B
SW-C
IC1C
AF
AMP
IC2: NJM2902V
MIC
MIX
IC2D
IC1D
IC1: NJM2902V
AF
AMP
MICMUTE1
IC13: BU4066BCFV
SW-D
MIC MUTE
MIC
from FRONT UNIT
E MOD1
L9V
M9V
VCC2
REG
UNIT
M9C
PSD
REGTEMP
A5V
IC1B
AF
AMP
E MOD2
from JACK2 UNIT
SW-A
SW-B
IC1A
AF
AMP
CP3
TELAFO
MICMUTE2
TELMUTE1
MICMUTE3
IC14 TC4S66F
RPT
AF
MUTE
AFATTO
R/BSW
from IC41
CP5 CP6 CP9
SIGOUT
CP8
IC26A
IC26: NJM2904V
AF
AMP
IC26B
AF
AMP
RX BPF
TUNE
RPT
AF
ADJ.
A5V
A5V
AFATTI
IC25: M62364FP
RX REF
FREQ
ADJ.
SCK, SDTO, DA2STB
E MOD3
from JACK2 UNIT
E DTCS
from JACK2 UNIT
AFATTO
RUNLK
RLV
M9V
M9V
RVCON
TUNE
TMUTE1, TMUTE2, W/NS
E TONE
RX
UNIT
SCK, SDTO, RPLSTB
SQL
R9C, W/NS
SQL
R2
R1
IC21: TC4W53FU
R/B
SQLO
SW
RSSI
DISC
NDET
BASEL
from IC39
RPT
SQL
ADJ.
DISC
from RX UNIT
IC20:
TC4W53FU
IC16:
TC4W53FU
IC17:
LA4425A
R/B
SQLI
SW
BASEL
from IC39
IC52: NJM2520V
AF
MUTE
AFATTI
to IC25
AFMUTE2
from IC40
IC3C, D
TX-
SIG
FIL
IC6: NJM2107F
AF
AMP
25TDTMFO, MBEEP, CWO, DTMFO
from CPU
CP4
J7, J8
OPTION
SLOT12
DISCO
MICI
OPT1, OPT3
from IC41
to CPU
from IC40
PROG
ANI CLR
CH UP
CH DN
MONI
RPT/BASE
SP MUTE
REMOTE
DS1
DC
DS2
PROG
LED
CTRL
Q18: XP1114
Q19: XP1114
Q20: XP1114
Q17: DTC144EE
Q24: 2SJ377
from IC39
DISC
from RX UNIT
IC9C: NJM2902V
BUFF
CP1
IC8D
AMP
IC8A–C
IC8: NJM2902V
CTCSS
FIL
IC12D
AMP
IC12A, C
DTCS
FIL
AFOUT
CP10
CP12
CIRQ,CCS,SDTI,SCK,SDTO
IC29: FX805LG
CTCSS
DET
IC9D, B
HPF
IC9A
DE-
EMP
CP11
CP13
IC7D
AF
AMP
IC10C
AF
AMP
AF OUT
IC7B
AF
AMP
IC10A, B
IC10: NJM2902V
IC9: NJM2902V
LPF
Q37:
DTC144EE
AF
MUTE
TELAFI
VR
UNIT
AFVRI
TELMUTE2
from IC40
KBEEP
from CPU
AF
AMP
AF
MUTE
AFVRO
VOL
AFMUTE1
from IC40
AFOUT1
+ – EXTMOD
IC42, IC43: TLP121 GB
D23–D26: MA2S111
Q44: DTA144EE
E MOD1
SPR
1
2
3
4
5
6
7
8
8P MODULER
CONNECTOR
SP
JACK1
UNIT
EXT SP JACK
+ – AFOUT
+15V
CP26
D1
JACK2
+ – BUSY
I/F
+ – PTT
E PT1
Q7: XP1214
Q8–Q11: XP1111
Q49,Q50: XP4311
D10,D11: MA2S111
D0
D0, D1 ,
D2, D3, D4
BUSYL,TXL
from IC39
BUSYL
RESET
IC34: S-80842CLUA-B363
IC35: BU4011BFV
IC36: BU4011BFV
Q3: DTC144EE
MCK, MDT
IC37: HN58X2464TI
EEPROM
INT, RES
IC33: HD64F2238FA13
AFOUT1
SCK, SDTO, PE1STB
DISCOUT
IC39: BU4094BCFV
PORT
EXPAND
IC7C
AF
AMP
IC7A
IC7: NJM2902V
AF
AMP
DTCSI
to CPU
25TI
to CPU
DTSTD,DTACK,DTMFD
IC31: LC7387M
DTMF
DECODE
X1: CR-733
4.194304 MHz
from CPU
DTSEL2
TELAFO
to IC1A
IC12B
IC12: NJM2902V
25T
FIL
IC30: TC4W53FU
DTMF
SW
DS3
TX
DS5
BASE
DS6
REMOTE
DS7: MSC-C161UYLY-4W
LCD
DS4
BUSY
FRONT UNIT
LOGIC UNIT
1
2
3
4
NC
L1
L2
NC
TEL LINE
CONNECTOR
from CPU
L1
L2
D4: D1UBA80
BRIDGE
D5: D1UBA80
BRIDGE
HOOK
SW
RL1: ATX209
RL2: ATX209
D28: 1SS355
D29: 1SS355
Q38: XP1214
IC46: BA6566F
SPEACH
NET
TELAFI
from CPU
HOOKC
SCK, SDTO, TELSTB
IC47: LC73701M
I/F
DIALER
IC50: TC4W53FU
DTMF
SW
from CPU
DTSEL1
TELBMR
from IC40
SCK, SDTO, PE2STB
SCK, SDTO, PE3STB
BASEL
RMTL
BUSYL
TXL
DCL
PROGL
D5C
TELBUSY
to CPU
IC40: BU4094BCFV
PORT
EXPAND
IC41: BU4094BCFV
PORT
EXPAND
AFMUTE1, 2
MICMUTE1~3
TELMUTE1, 2
TELBMR
R/BSW
W/NS
R9C
OPT1, 3
M9C
CPU
T/RLV
I/F
Q26~Q29: XP4311
D19~D22: MA2S111
E PT1, E PT2
MONI, R/B, M/SI
COAXSW, M/SO
M/SI, E PT2,
E MONI, E R/B
CP20
D4
CP22
D3
CP23
RTS
CP24
D2
13
25
12
24
11
23
10
22
9
21
8
20
7
19
6
18
5
17
4
16
3
15
2
14
1
D-SUB 25PIN
CONNECTOR
UNIT
CP25
CTS
BUSYOUT, TXOUT,
COAXSW, M/SO
CP19
DTI
CP21
DTO
DISCOUT
AF OUT
RSSI
I/F
RXDT0, TXDT0
RTS, CTS
E MOD2
E MOD3
E DTCS
IC32: TC4W53FU
TEMP
SW
D14
MA2S077
SHIFT
SW
X2
CR-681
12.288 MHz
SW
from CPU
SHIFT
from CPU
TEMP
REGTEMP
from REG UNIT
PATEMP
from TX UNIT
IC53: TC4W53FU
T/RLV
SW
TLV
from TX UNIT
RLV
from RX UNIT
IC45: LM567CM
TOUCH
TONE
DECODE
RING
to CPU
ONHOOK
to CPU
RINGER
D1: PTZ36B
IC48: TLP121
IC51: NJNM2107F
AF
AMP
CP28
RXDT1,TXDT1
MIC
CLONE
I/F
Q4, Q6, Q25: 2SC4081
Q5: 2SA1576
D7: MA2S111
M MONI
M PTT
1
2
3
4
5
6
7
8
SP/MIC
CONNECTOR
CLONE
L9V
SPR
from JACK1 UNIT
CHASSIS UNIT
INT SP
SPR
IC11: TA78L05F
+5V
REG
L9V
C5V
IC38: S-812C50AMC
Q45: 2SA1362
D13: SB07-03C
TEL5V L9V C5V
L5V
Q48: IMZ4T108
D43: MA2S111
L9V L5V
: RX LINE
: COMMON LINE
: CONTROL LINE
: DATA BUS
: TX LINE
: CONTROLS LINE
NOTE :
SECTION 10 BLOCK DIAGRAM