10 - 1
SECTION 10 BLOCK DIAGRAM
Explanatory notes
+B LINE
RX LINE (PCR1500/2500)
RX LINE (PCR2500 only)
RX COMMON LINE
PCR 2500 only
J3
S1
CPU5V
REG
L5V
REG
RESET
PWR
CTRL
PWR
CTRL
B+5V
REG
A+5V
REG
B+8V
REG
A+8V
REG
–5V
DC-DC
FIL
RIPPLE
AF+9V
REG
PWR
CTRL
J5
1
1
2
2
3
3
4
4
5
5
6
6
J2
To the
PC
To the
UT-122
1
2
3
4
X3:
CR-816 (12.000 MHz)
J2010
J2008
J8
J6
SP1
S1: SW-168
ATT
AF
AMP
AF
AMP
AMP
AMP
BPF
EEPROM
X4:
CR-816 (12 MHz)
AP5V
REG
BUFF
OP5V
REG
BUFF
X2: 4.194304 MHz
BPF
AF
AMP
POWER-SW
DC-JACK
IC3: XC6202P502
IC35: S-80942
Q4: 2SJ377
Q6: DTC144EU
PWR
RESET
L5V
MAIN-B PWR CONTROL
IC9: AN78L05
Q2002: 2SB1123
Q2001: DTC144EU
IC2006: TA7805
IC2007: AN7708
B+5V
B+8V
IC6: TA7805
IC7: AN7708
A+5V
A+8V
+33V
REG
+33V
IC2: BA6161F
D2: 1SS355
Q9: 2SC4617
Q5: 2SB1201
Q8: XP1501
AF+9V
USB+3.3V
REG
IC1: S-812C33
USBPOW
Q31: 2SB798
Q32: 2SC4116
D27: MA2S111
Q33: UNR9214
USB+3.3V
–5V
IC8: PC1555
D6: 1SS272
D8: MA8051
FRONT/
APDATA
SELECT
D30, D33: 1SS400
IC40, IC41: SN74AHC2G53
VBAS
IC32: USB2502
USB+3.3V
VBAS
CTRL
Q25: UNR9114
Q26: UNR9214
IC15: SN74LVC1G08
USB-
UART
BRIDGE
IC20: CP2101
USB-AUDIO
IC16:
PCM2901E
D+/D–
D+/D–
D+/D–
USB+3.3V
USB+3.3V
USB+3.3V
AF+8V
SP
MUTE
SPMUTE
APAFON
ELEC.
VR
OPTION
IC12:
LA4425A
Q12: 2SC4213
D28, D2029: 1SS400
IC17: SM6451B
Q18:
2SC4617
L5V
L5V
USB
AUDIO
SELECT
L5V
L5V
L5V
Q2015:
2SA1832
Q15:
2SA1832
IC2038:
SN74AHC1G66
USBINSEL
BEEP
L5V
AF
SELECT
OPAFINH
OPAFSEL
L5V
IC27: LM2904
L5V
L5V
SELECT
APAFSEL
APAFINH
AF
[ANA_AP/DV:SEL]
[AF-DIV.:OFF]
[FM/AP: SEL]
[DV/AM/etc: OFF]
FDET
APAFOUT
IC18: M30624
CPU5V
CPU5V
IC14: 24LC512
CLOCK
SHIFT
D26: HVC376
VBAS
CTRL
CPU5V
D34: 1SS400
LEVEL
CONV.
CPU5V
IC37: SN74LVC1G08
D14-D18, D20-D24:
IC34, IC36: CD4094
UT-122 UNIT
UT-108/118 UNIT
CPU5V
VCC
APPWR
Q2019: 2SB798
Q2021: 2SC4116
D2012: MA2S111
SELECT
SMETER
Q2022: 2SC4116
Q2020: 2SB798
VCC
OPPWR
D2013: MA2S111
AP5V
OP5V
AP5V
SMAD
BSMAD
IFOUTINH
IFOUTSEL
AP5V
IFOUT
IFOUTINH
IFOUT
SELECT
BIFOUT
L5V
IFOUTSEL
IC2039:
SN74AHC2G53
IC2028:
SN74AHC2G53
Q2023: 2SA1832
OPTION
JUDGE
Q2039:
UNR9214
IC23:
SN74AHC2G53
SELECT
FDET
DET
FDETSEL
OP5V
Q2024:
2SA1832
FDETINH
L5V
BFDET
CPU5V
OP5V
TXD, RXD
232RX, 232TX
DTMF
DEC
L5V
FDET
L5V
2SC4617
[AF-DIV.: OFF]
IC2023:
SN74AHC2G53
SELECT
L5V
Q2018:
L5V
SELECT
BOPAFSEL
AF
[ANA_AP/DV: SEL]
APAFOUT
L5V
BOPAFINH
BAPAFINH
IC2027: LM2904
[FM/AP: SEL]
BFDET
AF
BAPAFSEL
[DV/AM/etc: OFF]
APAFOUT
IC4:
SN74AHC2G53
IC2031:
SN74AHC2G53
AFO
BAFO
FROM
MAIN-B UNIT
FROM
MAIN-A UNIT
FDET
L5V
TONE
FIL.
VSC
FIL.
IC21:
LM2904 [1/2]
IC21:
LM2904 [1/2]
FIL.
IC2021:
LM2904 [1/2]
L5V
VSC
IC2021:
LM2904 [1/2]
TONE
FIL.
BFDET
BFDET
FDET
MA2S111
IC19:
BU8872FS
IC2029:
SN74AHC2G53
REV.
PROTECT
D36, D37:
MA2S728
L5V
X1:
CR-815 (24.000 MHz)
SP-OUT / LINE
SELECT
UT-106UNIT
USB HUB
CPU
MATRIX
EXPAND
OPTION
OPTION
LOGIC UNIT