Icom IC-T7H Service Manual

SECTION 10 BLOCK DIAGRAM
10 - 1
D51: MA2S077
D52: MA2S077
PA BOARD
VT4
CTRL
Q705: 2SA1588
VT4
D703: MA2S111
Q202:
2SA1588
T4
REG
+3C
VCC
BAND
SEL
TXSEL
Q203: UN9210
T4
Q304: 2SC5108
Q305: 2SC5108
DUAL VCO BOARD
Q702: 2SB1132
Q703: 2SD2216
D702: MA133
VHF
SHIFT
SW
Q354: UN9210
SHIFT
Q353:
UN9115
LVCO
+3C
Q357:
UN9115
LVCO
CTRL
Q853:
UN9115
VCO
CTRL
D354:
MA132WA
HVCO
CTRL
HVCO
Q854:
UN9210
UHF
SHIFT
SW
V VCO
U VCO
Q301: 2SC5006
Q302: 2SC5006
D302: MA2S077
D301: HVU350
Q306:
2SC5108
Q351: 2SC5107
T4
CTRL
TXC
Q704:
UN9211
D353: MA2S077
Q852: 2SC4403
UT4
CTRL
D352: MA2S077
D351: MA2S077
Q701:
2SC3356
Q201:
2SC3356
BAND
SW
VCC1
VGG1
VGG2
D201: MA2S077
Q401: 2SK3074
Q402: 2SK3075
VOUT
UOUT
VCC2
D551: MA2S077
Q204: UN921L
D722: 1SV271
TX RX
VERSION
VERSION
144~146
430~440
EUR
APC
SENS
Q201:
2SC4226
FI201: EFCH445MWN [USA-3]
EFCH435MWN [other]
R250: 0.15 1W
APC
SET
VCC
IC301: TC4W53FU
Q305: UN9210
Q306: UN9213
Q307: XP1114
Q308: XP1213
Q309: UN9114
Q310: UN9210
D301: MA2S111
D302: MA2S111
Q250: 2SC4081
Q253: DTC114TU
D250: MA8030
VCC
APC
Q255: 2SB1462
D251: MA8043
VCC
Q202: 2SC4403
IC250: NJM2904M
Q400:
2SC5107
FI101:
CFWM450E
PLL IC
IC851:
UPD3140GS
X851: CR-515
Q352:
2SC5107
REF
15.2MHz
TUNE
CTRL
Q355:
2SK880
Q356: 2SC4081
15.2MHz
Q4: XP1501
Q5: 2SA1588
D402: MA132WA
IF IC
45.6MHz
IC101:
TA31136FN
2NDLO
DC
SW
CHG
HV
FI401:
FL-244
Q101:
2SC4215
Q901: 2SB1132
D902: MA133
D904: SB07-03C
IF: 45.15 MHz
D903: MA2S728
Q902: HAT1024R
Q401:
2SC4403
D54: MA304
Q51: 2SC5226
D53: MA304
Q52: 2SC4403
ITA
SEA
136~174
400~470
140~150
430~440
USA-3
EUR
ITA
SEA
USA-3
IC151:
TA7368F
2F UNIT
(TO BATT)
+
VCC
Q10:2SJ364
Q12:
XP6501
CTCIN
R3.5
IC13:
NJM2904M
IC12:
BA4510F
VCC
R3
REG
+3C
+3C
VCC
MIC
AMP
MUTE
SW
IC12:
BA4510F
Q31:
UN9211
D901: RB060L-40
HV
REVERS
VOLT
PROTECT
MC1:
EM-123TH
S2: JPM1990-2013R
SP1:
CS028014-12
TX
SENS
+3CPU
REG
VCC
IC2: S-81335HG-KI
RESET
+3C
REG
VCC
+3C
Q4: XP1501
Q5: 2SB1132
Q40: UN9213
D3: MA2S111
D19: MA2S111
Q42: UN9211
IC3: S-80730SL-AT
LED
DRIVER
LED
DRIVER
VCC
VCC
5.039MHz
X1: CR-534
Q34: UN9215
Q36: UN9215
Q44: UN9215
Q1: UN9210
D1: MA2S111
LIGHT
NOISE
DS2: LNJ310M6URA
DS1: LNJ310M6URA
DS3:
LT1EPS3A
AF
REG
VCC
AFON
Q151: 2SB1201
Q152: XP1501
VOL
1F UNIT
TP96D96E20-15F10KA
SENS
INITIAL
MATRIX
KEY
CPU
EEPROM
IC1
M38267M8L-219GP [USA-3] only
M38267M8L-155GP [Other]
DS4: LD-BU4323J
CTCOUT
DTMF
Q32:
2SB1462
LOGIC UNIT
LCD
IC15:
X25080SI-2.7
D303: MA304
D304: MA2S077
BUFF
LOOP
FIL
LOOP
FIL
BUFF
x3
LPFMIC
PRO
TECT
D4:
MA8051
MIC
REG
Q30:
UN9115
-3C
LPF
LPF
CTC
REG
BPF
DRIVE
AMP
AF
MUTE
DET
SW
IF
AMP
XTAL
BPF
LO
AMP
BPF
RX LO
FREQUENCY
LO
AMP
LO
AMP
TX
SW
RX
SW
BUFF
BUFF
AF
AMP
Q35: UN9215
BPF
BPF
BPF
RF
AMP
RF
AMP
RF
AMP
D52: MA304
APC
CTRL
DRIVE
AMP
PWR
AMP
LPF
HPF
D701: MA2S077
LPF
LPF
HPF
TX
SW
ANT
SW
ANT
SW
D724: 1SV308
D723: 1SV308
D552: MA2S077
LIMIT
TER
LIMIT
TER
CLONE
SW
VR3V
REG
UR3V
REG
Q404: UN9115
D400: MA2S077
D202: MA2S077
Q403: UN9115
D203: MA2S077
R3.5
VR3
VR3V
R3.5
UR3
UR3V
Q45:
UN9115
IC102: TC4S66F
COMMON
RX
DATA BUS
TX
144~148
430~450
144~146
430~440
136~174
400~470
118~174
430~440
118~174
400~470
FREQUENCY
RX LO
FREQUENCY
189.15~191.15
384.85~394.85
181.15~219.15
354.85~424.85
163.15~219.15
354.85~424.85
163.15~219.15
384.85~394.85
D202: MA2S077
VT4
D725: 1SV271
D201: 1SV271
D55: 1SV271
REMOTE
T4
D6: MA2S111
D7: MA2S111
D8: MA2S111
ANT

Icom IC-T7H Specifications

General

Brand	Icom
Model	IC-T7H
Category	Transceiver
Language	English