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3-7-38 EXPANDER IC (DISPLAY BOARD; IC4)
1
KI0
Input port for [CLEAR], [DUAL
WATCH] and [SPLIT].
2
KI2
Input port for both main and sub
bands [APF/TPF].
4
KI3
Input port for both main and sub
bands [FILTER] and [PBT CLEAR].
5
KI1
Input port for both main and sub
bands [NOTCH], [RIT] and [
∆
TX].
12
PITL
Input port for [CW PITCH] control sig-
nal.
13
MNCL
Input port for [NOTCH] control for
main band signal.
14
SDGL
Input port for [DIGI-SEL] control for
sub band signal.
15
SNCL
Input port for [NOTCH] control for sub
band signal.
Pin
Port
Description
number
name
3-7-39 EXPANDER IC (DISPLAY BOARD; IC5)
1
KI8
Input port for [
≈
] switches from first to
fourth.
2
KI10
Input port for [AGC VR], [NR] and [NB]
switches for main band.
4
KI11
Input port for [MONI], [TUNER] and
[TIMER].
5
KI9
Input port for [AGC VR], [NR] and [NB]
switches for sub band.
12
KI7
Input port for [
≈
] switches from fifth to
seventh.
13
KI4
Input port for [7 (3)], [18 (6)], [28 (9)]
and [F-INP (ENT)].
14
KI5
Input port for [3.5 (2)], [14 (5)],
[24 (8)] and [50 (0)].
15
KI6
Input port for [1.8 (1)], [10 (4)], [21 (7)]
and [GENE (.)].
Pin
Port
Description
number
name
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...