Icom IC-7300 Service Manual page 25

(Amended page)
October 2016
• DISPLAY UNIT B-8330D (Bottom view)
4
R44 R43 R42 R41
R34 R33 R32 R31
3
5
• VR UNIT B-8332D (Bottom view) • PBT UNIT B-8331D (Bottom view)
• RIT UNIT B-8333D (Bottom view)
7
DISPLAY
B-8330D
RIT BOARD
R71 C71
J71
J71
C73 R73
C72 R72
R24 R23 R22 R21
R2
R3
MAIN DIAL
J201
R204 R203
R202 R201
C201
6
• PHONE UNIT B-8334C (Bottom view)
22
The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together.
J301
C503
C502
C501
J601
J101
R142
DS1
IC152 R144
(FRONT UNIT)
J101
1
• MIC UNIT B-8335D (Bottom view)
8
J51
C51 R51
C50 R50
C53 R53
MAIN UNIT
C54 R54
J601
C52 R52
PBT BOARD
MP1
EP602
D491
R491
C102
R492
R496
R461
R493
R101
Q493
R102
C103 Q491
R462
R494 R471
R472
L102
D472
PHONE BOARD
R11
R12 R13
R14
11
J421
J421
MAIN UNIT
9
J61
C61 R61
C62 R62
VR BOARD
10
• SD UNIT B-8336D (Bottom view)
J1
See the PARTS LIST H/V location on the PARTS LIST for location details.
2
Q1
R481
MIC BOARD
J451
EP454
C452 EP452
EP453
C453
J451
EP451
EP455
12
J401
D401
EP402