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2 - 1
SECTION 2
INSIDE VIEWS
• DISPLAY BOARD
Sub CPU
(IC6: HD6473847RH)
+5V regulator
Main dial
Reset IC
(IC4: S-80945CLMC-G7F)
SW LED dimmer
Q50: 2SB1132
Q51: 2SC4081
LCD driver
(IC2: SED1522F0C)
VR board
Back light dimmer
Q2: 2SB1132
Q3: 2SC4081
Key dimmer
Q13: 2SB1132
Q14: 2SC4081
Sub CPU
(IC6: HD6433842RB27H)
+5V regulator
Main dial
Reset IC
(IC4: S-80945CLMC-G7F)
SW LED dimmer
Q50: 2SB1132
Q51: 2SC4081
LCD driver
(IC2: SED1522F0C)
VR board
Back light dimmer
Q2: 2SB1132
Q3: 2SC4081
Key dimmer
Q13: 2SB1132
Q14: 2SC4081
• PA UNIT
Expand IC
(IC600: ISPLSI2064VE)
Buffer
(IC560: NJM2904M)
Comparator
(IC640: TA75393)
Low-pass filter
TX/ RX switch
(RL250: ATN207)
Drive amplifier
(Q150: RD01MUS1)
Pre drive amplifier
(Q101: 2SK3074)
Power amplifier
(Q200, Q201:
(Q200, Q201: RD07MVS1)
RD07MVS1)
Expand IC
(IC600: ISPLSI2064VE)
Buffer
(IC560: NJM2904M)
Comparator
(IC640: TA75393)
Low-pass filter
TX/ RX switch
(RL250: ATN207)
Drive amplifier
(Q150: RD01MUS1)
Pre drive amplifier
(Q101: 2SK3074)
Power amplifier
(Q200, Q201: RD07MVS1)
Содержание i703
Страница 1: ...HF 50MHz ALL MODE TRANSCEIVER i703 SERVICE MANUAL...
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Страница 57: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13912HZ C1 C 2003 Icom Inc...
Страница 65: ...BOTTOM VIEW PA UNIT 8 6...