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HYT Manuals
Two-Way Radio
TC-780
Service manual
Tc-780 Block Diagram - HYT TC-780 Service Manual
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Also See for TC-780
:
Service manual
(44 pages)
,
User manual
(37 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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U604
5V
AVR
SAVE
U603
5V
AVR
U602
F601
2SA1745
Q603
5V
B+
AVR
SW
FUSE
VOL
D603
Q604
DAN222 SW
SW601
SBC
Q601
VOL OUT
U601
3V
SW
AVR
SW
U606
E2PROM
RESET
TXD/RXD
PTT
2T/5T
DTMF
CDCSS,CTCSS
X501
APC
BEAT
BEEP
SHIFT
MUTE
9.8304MHz
5TC
5RC
TC-780 Block Diagram
TC-780 Block Diagram
B+
C5V
5CNS
Q606
R5V
M5V
SW
R5C
Q608
T/R
Q605
PSW
Q607
T5V
SW
SW
T5C
Q609
SW
MOD
SWB+
MOTOR SERVO
Q602
MOTOR CON
U605
MCU
LED EN
DC SW
C1C2C3C4
C5C6
LCD
EN1
EN3
DC SW
PTT
Drivers
EN2
EN4
T/R
SBC
RSSI Keyboard
LCD
LED*6
CH SW
PLL IC
UL
LPF
U101
Data
CLK
5C
C5V
LE
RX
16.8MHz
VCO
Q108
X101
Q109
Q102
SW
MB
Q110
SW
Q107
Q105
Q106
TX VCO
5C
Buff AMP
Buff AMP
X401
U403
QUAD
TA31136
Z402
AK2346
AF
U201
5RC
AMP
PLL IC
IC
U205
TCLK 、 TDATA
Filter
DI/O 、 RDF/FD
DIR 、 SCLK
TI
X202
B+
3.6864MHz
MIC1
VOX IN
93
Pre AMP
Drive AMP
final AMP
Q404
Q409
Q401.Q402
5T
5T
SW
D401
LPF
D402
5R
Mixer
Q415
LC
IF BPF
IF AMP
44.85MHz
XF401
Q412
IF BPF
5R
Z404(W)
SW
SW
D416
D415
455KHz IF BPF
W/N
W/N
Z403(N)
455KHz IF BPF
U203
AFin
AF out
AK2346
DTMF
Codec
Q204
AMP
SW
Filter
MSK
AFMute
AMP
MIC in
MIC Out
U204
DTMF 、 2T/5T
QT/DQT
MOD
ANT
ANT SW
LPF
D403
D406
ANT SW
DC
AMP
D407
D408
5T
APC
RF BPF
RF BPF
RF AMP
Q410
EXT-Speaker+
AF
SW601
AF out
EXT-Speaker-
AMP
Speaker+
KNOB
Q615
SP Mute
SW
Speaker-
Select
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Table of Contents
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