Tc-268 Block Diagram - HYT TC-268 Service Manual

Q?
X400
7.3728MHz
ENC 0
CHANNEL SW 1
2
3
EEPROM
SCL
IC401
SDA
AT2408
N1OSI
2.5
5M
S402
5M
PTT
S403
MONI
SW
TX/BUSY LAMP
Q402
SB
DTA
5MC
114YE
5M
D400
D401
SW SW
Q400
Q401
DTC
DTC
114EE
114EE
5TC
RLED GLED
MOSFET N
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TC-268 Block Diagram

TC-268S Block Diagram
DEV
AMP LOOP FILTER
Q2
2SC5108
PLL IC
IC1
MB1511
5C
UL 2ND LOCAL
PLL DATA
VR1
EP
TCXO
DT
CK
X1
VCCN
NSA0298A
12.8MHz
Q403
DTC 3C
TO
144EE
CLOCK
SHIFT
TXD RXD
READ/WRITE
APC/TUNE
WNRC 5RC
TO AFCO
SAVE MUTE
5MC EP
IC403
5TC DT
M38034 WNTC CK
PABC RLED
GLED BEEP
VCCN RX
SHIFT
UL BATT
TI
TIBI
BUSY
RESET
INT
IC402 IC400
PST
R3111
9140NR
N451C
5V REG
IC404
XC
SB
6201P5
REF
5T.5C.REG
Q406
Q405
5T
Q404
UPA
Q407
5C
672T
UFMMT
UMG3N
SW
*2
SAVE Q408
DTA 5R
123JE
B
5RC
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DEV
D5
1SV214
AMP
TX VCO BUFF AMP
Q100
Q4 Q6
2SC5108
2SK1875 2SC5108
F.CONT
D2.D4
1SV283
5C
*2
RX VCO
F.CONT T/R SW RIPPLE FILTER
Q5.Q7
D1.D3 Q3
1SV283 2SJ243
2SK1875
UMC4
*2 NV
RX
L212 CF200
DET COIL CF
450kHz
IF IC
IF AMP
IC200
Q201
TA31136FN
*3 2ND LOCAL AMP
2SC4619
Q1
38.4MHz
TCXO
2SC5108
5R 5R
BASE BAND SECTION
BUSY
CHARGE IC301
LPF
Q200
DTA
114EE
LPF
NJM2904V
5MS 5R
LIMITER
TI DA222
TIBI
72
LO SW AMP
D100
Q101
D200
2SC4988
MA2S077
*2
5C 5T 5T
Q8 . D6
2SC5343 5C
MA2S111
B SW
Q104
Q103
B
FMMT717
2SK1824
PABC
APC
Q107
DTC
THERMAL 114TE
PROTECTION
XF200
1ST MIXER
BPF
Q202
3SK318
L203.L204.L214
38.85MHz
D201
TUNE
5R 5R
IC300
FLAT AMP MUTE SW
WIDE/NARROW SW
Q302
Q303
2SK1824
DTA
LPF
144EE
MUTE
WNRC
HPF
HPF
NJM2902V
5MS 5R
VR501
DEV
LPF LPF
Q501 Q502
DEV
2SC5343 2SC5343
5T 5T
WIDE/NARROW
Q500
VR500 2SK1824
DQT BALANCE
TO
WNTC
DRIVE AMP FINAL AMP LPF
ANT SW
D101
Q102 Q105
RD01MUS1 RD07MVS1 MA2Z077
APC
SW
Q109
IC100
DTA
NJM2904
144EE
ANT SW
SW
D102
5T Q106
D103
2SK1824
MA2S077
SW
Q108
DTC
114EE
5T
5T
AMP BPF
Q203
3SK318
L208.L209
TUNE
5R L210.D205
D203.D204
AUDIO SW MUTE SW
VOLUME
IC302 Q307
KIA6278F
2SK1588
SW SW SW
Q306 Q304
Q305
DTC
B DTC
2SA1362
144EE 144EE
POWER SW AFCO
SB
REVERSE
B PROTECTION
D502
1SR154
LIMITER AMP
HPF
IC500
NJM
2100V
5MS DET SW AGC/MUTE
Q504 D500 D501 Q503
DTA
1SS372 DAN222 2SC5343
5MS
143ZE
MUTE
RX
ANT
SP
BATT
MIC500