Icom IC-FR4000 Service Manual page 7

• TX UNIT
Top view
• RX UNIT
Top view
*: Located under side of this point.
• BOARD LAYOUT
*: Located under side of this point.
Mixer
(IC6: NJM2107F)
D/A converter*
(IC5: M62364FP)
PLL reference
oscillator
12.8 MHz
(X1: CR-732
or CR-758)
PLL IC*
(IC4: MB15A02PFV1)
PLL reference oscillator
12.8 MHz
(X3: CR-732 or CR-758)
TX VCO circuit
PLL IC*
(IC2: MB15A02PFV1)
RF amplifier
(Q1: 2SC5337)
Noise amplifier
(IC8: NJM2902V)
TX unit
REG unit
LOGIC unit*
FRONT unit
2 - 3
1st mixer
(IC1: GN2011)
Lo amplifier*
(Q8: 2SC4226,
Q9: 2SC4703)
RX VCO circuit
IF amplifier
(Q3: 2SK1771)
2nd Lo oscillator
IF IC 69.545 MHz
(IC2: TA31136FN) (X2: CR-729)
25PA/50PA unit
JACK2 unit*
JACK1 unit*
RX unit