Main-B Unit (Pcr2500 Only) - Icom IC-PCR1500 Service Manual

B8V Q66:
3SK131
BIFCON
IF
2ND IF
GAIN
AMP
CTRL
MODE
SW
D97: 1SV308
BIFAGC
IC28: LMV321
B/WF5
D78, D79, D90,
D91: MA2S077
NB
X3: CDSCB10M7GA141
AMP
Q68:
2SK882
Q43: 2SC4617
Q45: XP4601
AGC
BWFDET CTRL.
WFM-IC
IC16: LA1145M
BWFDET
BIFAGC
Q58:
2SC4617
AGC
AGC
AMP CTRL.
Q57: UNR9213
To J5
MAIN-A
UNIT
Q69, Q70: 2SA1832
Q74: XP1213
BAGCF
AGC
BSCAN
CTRL.
D81: 1SS400
D76: MA2S728
B8V
IC25:
NJM2904V[1/2]
AGC
AMP
BRFAGC
B–5V
AGC
AMP
Q67: 2SC4617
B5V
BAGCSET
IFIC
BRSSI
D/A BUFF IC24:TA31136
IC8:
IC32:
M62363FP[1/8] LMV321
BAGCF BSCAN
BSMAD
ADJ
SELECT
IC29: SN74AHC1G08
IC30: SN74AHC2G53
D103: MA2S728
METER
AMP
IC25: NJM2904V [1/2]
D80: 1SS400
BAPCO5V
BIFOUT
AMP
Q76: 2SC4215
B5V
IC27:
CD4066BPWR
BAFO
BAMAF
AF
SELECT
BWFDET
BFDET
2nd-IF: 10.7 MHz
B5V
2nd-Mix
D66: MA2S077
D70: MA2S077
IC19: TA4107F
MODE MODE 2ND IF
BPF
SW SW AMP
Q60:
FI5: SFVLF10M7MF00
2SC4617
FI6: SFTLF10M7GA00
MODE MODE
BPF ATT
SW SW
D67: MA2S077
D71: MA2S077
Q49: 2SC4617
Q52: XP4311
NB GATE
NB-SW BNB
GATE CTRL
Q65: 2SC4617 Q46: UNR9213
B/WF5
B5V B5V
REF REF
AMP
AMP
Q71: Q82:
2SC4617 2SC5277
BREF
D72: MA2S077 FI7: CFWS450K3 D68: MA2S077
MODE CERAMIC MODE IF
SW SW AMP
BPF
Q62:
D95: MA2S077 FI8: CFWS450HT D93: MA2S077 2SK882
MODE CERAMIC MODE
SW BPF SW
D73: MA2S077 FI9: CFWS450E D69: MA2S077
MODE MODE
BPF
SW SW
D96: MA2S077 D94: MA2S077
IF AM
BAFAM
BUFF
AMP DET
Q61: 2SK882 Q63: 2SC4617 D75: RB706
X2:
CDBC450CX24 Q73: 2SC4617
IC26: SN74AHC1G66
FIL2
DET
FIL3
CTRL
NOISE
CTRL.
D/A
Q64: UNR9213
Q81: UNR9213
D74: DAN222
10 - 3
1st-Mix
B8V B5V
FI1: EFCH266MWNT1
1st IF
ATT BPF
AMP
Q44: 3SK131
1st-IF: 266.7/265.7/267.7 MHz
BIFAGC
ATT
B1/2 5V
B1/2 5V
IC11:
532.4–1066.65 MHz
PB1508GV
Lo
1/2 BUFF HPF LPF
SW
Q34:
D85: MA2S077
2SC4835 266.7–532.35 MHz
Lo Lo Lo
ATT BPF
SW SW SW
D84: MA2S077 D60: MA2S077
D57: MA2S077
ATT
Q32: UNR9211
532.4–749.95 MHz
Q21: UNR9113
750–1066.65 MHz
D55: 1SV308
BVSF1 BVCO1
VCO
SHIFT
SELECT
BVCO5V
B5V
BVCO5V D58: 1SV308
1st-VCO
Lo
VCO
BUFF BUFF
B5V B+33V
SW
Q27:
Q28: 2SC5193 2SC5193 IC15:
D53: 1SV278 PC2709TB
LOOP
BVCO5V
FIL
Q30: 2SC5193
D54: 1SV278 BVCO5V
Q35: 2SK880
Q36: 2SC4117
Lo
BUFF
VCO
SW
Q29:
B8V
2SC5193 D59: 1SV308
BVSF2 BVCO2
VCO
SHIFT BUFF
SELECT
Q20: UNR9113
D52: 1SV308
Q39: 2SC4835
Q33: UNR9211
BPLL3.3V B5V
BVCO5V
B5V
PLL REF BREF RIPPLE
AMP
IC FIL
Q24:
2SC4617
IC10: MB15E03SL
2nd-VCO
BPLL3.3V
B8V
B8V B5V
LOOP PLL REF
LPF BUFF VCO
FIL IC AMP
Q50: Q31:
2SC4835 Q47: 2SC5193 2SC4617
D62, D63: 1SV284 IC13:
B5V
MB15F63UL
BUFF
Q41: 2SC4215
MAIN-B UNIT
Explanatory notes
(PCR2500 only)
BVCO1
50–149.999999 MHz
BBAND5
BTUENV1 BBAND5 BRFAGC
RF
BAND
BPF
SW AMP
Q15:
IC14: SPM5001 D44: 1SV308 3SK318 D8, D16, D18: 1SV290
D35, D36: 1SV290
D28, D31: 1SV290
150–349.999999 MHz
BBAND6
BTUENV1 BBAND6 BRFAGC
RF
BAND
BPF
AMP
SW
D46: 1SV308 D37: 1SV282 Q17: 3SK318
350–699.999999 MHz
BBAND7
BTUENV1 BBAND7 BRFAGC
RF
BAND
BPF
AMP
SW
D47: 1SV308 D38: 1SV286 Q16:
D39: 1SV282 3SK318
700–1300.000000 MHz
BBAND8
BTUENV1 BBAND8 BRFAGC
BAND RF
BPF
AMP
SW
D19, D23: 1SV286
D45: 1SV308 D40, D41: 1SV286 Q18:
D33, D34: 1SV286
3SK324
BTUNV1_
BTUNV4
Q79:
2SC4617
BAPCO5V BPLL3.3V B1/2 5V
Q77: +5 +3.3
2SA1832 REG
REG
BREF
IC9:
BIFSW S-812C33AMC
A+5V
IC3, IC17, IC18: CD4094
DC
EXPAND
BUFF
Q3, Q4, Q54, Q55, Q56: XP1114
Q59: XP4311
BDAT
+B LINE
BCK
BDSTB
RX LINE (PCR1500/2500)
Q12: 2SC4835
BPF
CTRL
BBAND5
BTUENV2, 3
BAND
BPF
SW
D5:1SV308
Q1: UNR9213
BBAND6
Q2: UNR9113
BTUENV2
Q8: 2SC4617
BAND BATTC
BPF
SW
ANT
D32: 1SV282 D6: 1SV308 J1
ATT
CTRL
BBAND7
BTUENV3
ATT
BAND
BPF
SW D1, D3:
1SV308
D26: 1SV286 D14: 1SV308
D27: 1SV282
D7: 1SV308
BAND
SW
BBAND8
BTUENV2
BAND
BPF HPF
SW
D13: 1SV308
B5V
B+33V
BT1_BT4
TUNE
D/A IC8: M62363FP [4/8]
CTRL
IC7:
B–5V NJM2902
DAT
CK
DSTB
+5 Q23:
REG UNR9111
BPFL2