Block Diagram - Icom IC-T7H Service Manual

SECTION 10

BLOCK DIAGRAM

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