35
TK-690H
(
B
)
DESCRIPTION OF COMPONENTS
Ref. No.
Use/Function
Operation/Condition
IC301
PLL IC
1 : CP
2 : DT
3 : EP
4 : Vss
5 : Fin
7 : Vcc
8 : REFin (16.8MHz)
14 : Charge pump output
18 : UL ("H" when lock)
20 : VDD (5V)
Q101,102
1st amplifier
RX frequency
Q103
IF amplifier
10.7MHz
Q105,106
NB gate
Q107
IF amplifier
10.7MHz
Q108
SQL amplifier
(Noise amplifier)
Q110~113
RX 1st mixer
Q114
NB switch
On when NB on
Q115
DC switch
On when TX
Q201
8T switch
8V when TX
Q202
8T switch
On when TX
Q203
TX pre-drive amplifier
Q204
8R switch
On when RX
Q205
8R switch
8V when RX
Q301
Ripple filter
8CL
Q302
Ripple filter
9CL
Q303,304
Loop filter
Q306
OSC
TX-VCO
Q307
OSC
RX-VCO
Q308
DC switch
On when TX
Q309
DC switch
On when RX
Q310
DC switch
Off when RX
Q311
Buffer amplifier
Q312,313
Amplifier
D102~105
BPF tuning
Vari-cap tuning
D106
Noise detector
D107
DC switch
On when TX
D301
Frequency controller
TX-VCO
D302
Frequency controller
RX-VCO
D303
Frequency controller
TX-VCO
D304
Frequency controller
RX-VCO
D305
Modulator
D306
RF switch
TX/RX
Control Unit (X57-5600-XX) (B/2)
-10 : K
-11 : K2
-12 : K3
Ref. No.
Use/Function
Operation/Condition
IC501
D FF
Ref. No.
Use/Function
Operation/Condition
IC502
LPF
IC503
AVR
Input : SB, Output : 8V
IC504
Audio processor
IC505
HPF/IDC
IC506
AVR
Input : 8V, Output : 5V
IC508
Limiter/Buffer amplifier
IC509
Buffer amplifier
IC510
Summing amplifier/LPF
IC511
DTMF encoder
IC512
D/A converter
IC513
LPF/Summing amplifier
IC514
EEPROM
IC515
Analog switch
IC516
CPU
IC517
Shift register
IC518
Buffer amplifier
IC519
Flash ROM
IC520
NOR gate
IC521
Buffer amplifier/
Amplifier
IC522
Audio power amplifier
IC523
Shift register
IC524
Buffer amplifier/
De-emphasis
IC525
DTMF decoder
IC526
Amplifier
Q501
DC switch
Q502
DC switch
On when 18V or more
Q503
DC switch
On when the power switch on
Q504
Muting switch
MIC mute
Q505
DC switch
Q506,507
DC switch
Timed power off switch
Q509
DC switch
Off when P/A
Q510
DC switch
Off when EXT SP
Q511
DC switch
Off when INT SP
Q512
DC switch
Off when RX busy
Q513
DC switch
Q514
Muting switch
On when AF mute
Q516,517
DC switch
On when on signalling code
Q518
DC switch
On when push the power switch
Q519
Power switch
On when the power switch on
Q520
DC switch
On when horn alert
Q522
Beat shift switch
On when beat shift
Содержание TK-690B
Страница 78: ...TK 690H B TK 690H B 97 WIRING ...
Страница 79: ...TK 690H B TK 690H B 100 BLOCK DIAGRAM ...