Yaesu FT-757GX II, Technical Supplement

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D30 1 1
RF Pickup Rectifier 1 00W PA U N IT
D30 1 2 1 S l 5 5 5
S i Diode RF Pickup Detector
Bias
LOCA- NOMEN-
APPLICATION
D30 1 3
Back Pulse Canceller
TION CLATURE
TYPE
Q6 00 1 2 SC 1 9 7 1 NPN S i TR TX Predriver
Q6002 2SC2395 TX Driver
D ISP LAY U N IT Q6003
Q6004
2SC2879 TX Final Amplifier
LOCA- NOMEN-
Q6005
TYPE APPLICATION
Q6006 µPC 7 8 0 8 H Regulator I C Final Bias Reg
TION CLATURE
Q600 7 2SD880-0 NPN Si TR
Q40 0 1 2SC4 96 Y
NPN
S i
TR
DC-DC Converter
Q6008 2 SA 1 0 1 2Y PNP Si TR TX 1 3 .5V Sw
Oscillator
Q6009 2SC4 5 8 D NPN S i TR TX 1 3 .5 V Sw Driver
Q4002 TMS23 70 4 -bit
CPU
Display Control CPU
Q60 1 0 2SD892R Power ON Relay
Q4003
2SA7 3 3 AQ
PNP
Si
TR CPU Reset Switch
Driver
Q60 1 1 TL7705 OP Amp IC Fan Switching
D400 1 1 S l 5 5 5 S i Diode Display "CH" Diode
Comparator
OR (b-seg)
Q60 1 2 2SA95 2 L PNP Si TR Fan Driver
04002
. . (g-seg)
Q6 0 1 3 MC140 1 1 BCP Quad NAND IC TX/RX Sw and Delay
D4003 1 SS 5 5
- 3 0 V Rectifier
(for TX 1 3 .5 V )
D4004
HZ5 C l Zener Diode -25V Bias
D4005
RD30EB2 -30V Regulator
D600 1 HZ3Cl Zener Diode Predriver Bias
04006
1 S l 5 5 5 S i Diode -8V Rectifier
Regulator
D400 7
HZ4 B3 Zener Diode -4V Regula tor
D6002 l O D l O
Si Diode
Temp Compensator
D4008
1 S 1 5 5 5 S i Diode CLAR, M->VFO,
(for Driver Bias)
VFO->M, PB2 Sw
D6003
04009
VFQ-> _M Sw
06 004
Temp Compensator
D40 1 0 I N H Switch
(for Final Amp Bias )
040 1 1 UP Switch
D6005
D4 0 1 2 DWN Switch
D6006 1 S 1 5 5 5 PTT T / R Delay Trigger
040 1 3 CLAR Switch
D6007 PTT Delay Gate OR
04 0 1 4
D LOCK Switch
D6008
Reverse Voltage
040 1 5
VFO A/B Switch
Isolator
04 0 1 6
M->VFO Switch
D6009 PTT 1 3 .5V Diode OR
D4 0 1 7
SPLIT Switch
D60 1 0 PWR Relay Back Pulse
040 1 8
M R Switch
Canceller
040 1 9
VFO->M Switch
06 0 1 1 RX Mu te Diode OR
040 20 LN4 1 0YP LED ON AIR Indicator
D60 1 2 PWR ON Rev Voltage
04 0 2 1 1 S 1 5 5 5 S i Diode D LOCK, VFO A/B,
Isolator
M->VF O Clamp
040 2 2
VFO�M , I N H Clamp
040 2 3
U P , DWN, CLAR
Clamp
1 0W PA
04024
SPLIT, MR, VFO->M
Clamp
LOCA- NO MEN-
TYPE
APPLICATION
D4025
INT Clamp
TION CLATURE
C0400 1 CSB500E Ceramic 500kHz Display CPU
Q700 1
2 SC 2 1 6 6 NPN S i TR TX Driver
Resonator Clock Oscillator
Q7002
2SC2509 TX Final Amplifier
Q7003
Q7004
µPC 7 8 L08 Regulator IC Final Bias Regulator
Q7005 2SD8 8 2 Q N P N S i TR
D I A L UN IT
Q7006 2SC4 5 8 D TX 1 3 .5 V S w Driver
Q700 7 2 SA 1 0 1 2Y PNP Si TR
TX
1 3 .5V Switch
LOCA- NO MEN-
Q7008 M C 1 40 1 1 BCP Quad NAND IC TX/RX Sw and Delay
TYPE APPLICATION
(for
TX
1 3 .5 V )
TION CLATURE
Q 7009 2SD89 2 R NPN S i TR Relay Driver
Q5 0 0 1 MC140 1 1 BCP Quad NAND IC Beeper Multivibrator
Q5 002
MC145 84BCP Hex Schmitt Pulse Shapers
D 700 1 HZ3Cl Zener Diode
Driver Bias. Regulator
Trig IC
D 7002 MVl l Varistor Diode Temp Compensator
Q5 003 MC140 7 1 BCP
Quad OR IC Up/Down Logic
(for Final Bias)
Q5004 MC140 7 1 BCP
Dual 4 AND IC
D 7003 1 S 1 5 5 5 S i Diode PTT T/R Delay Trigger
Q5005 MC140 1 3 BCP
Dual "D" F-F Up/Down Logic ,
D 7004 PTT Delay Gate OR
Buzzer Switch
D 7005 PTT 1 3 .5 V Diode OR
D 7006 Reverse Voltage
050 0 1 1 S l 5 5 5
S i Diode Tune Disable by
Isolator
Buzzer Diode OR
D 700 7
PWR Relay Back Pulse
0500 2 Tune Disable by D
Canceller
LOCK Diode OR
07008
RX Mute Diode OR
05003 Buzzer Timer
D 7009
PWR ON Rev Voltage
Isolator
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