Icom IC-9700 Service Manual Addendum page 70

(Amended page)
June 2019
• VR-A UNIT
MAIN RF/SQL MAIN AF
Maximum counterclockwise
Maximum counterclockwise 0 V
Center 1.6 V
Center 1.6 V
Maximum clockwise 3.2 V
Maximum clockwise 3.2 V
R1
J1
GND
1
GND
2
MRFL
MAIN AF/ (RF/SQL)
3
DISPLAY UNIT
MAFL
4
MVRK
5
3R3V
6
3.2 V
R09430GMFB30.5C7B103
When [MAIN AF] is:
Held down : 0 V
Released: 3.2 V
• PHONE UNIT
EP401
MPZ2012S601A
J1
EP403 R403
PHONES MPZ2012S601A 100
EP402 R404
MPZ2012S601A 100
When headphones are:
Connected : 3.2 V
Not connected: 0.6 V
• SD UNIT
J1
#9
#1
#2
CD1
#3
#4
SD CARD #5
CD2
#6
#7
#8
When an SD card is:
WP1
Inserted :
WP2
Not Inserted : 0.6 V
When an SD card is:
Inserted and write protect is ON: 3.3 V
Inserted and write protect is OFF : 0 V
Not inserted:
• VR-B UNIT
SUB RF/SQL
0 V
Maximum counterclockwise
Center
Maximum clockwise
R1
SUB AF/ (RF/SQL)
R09430GMFB30.5C7B103
When [SUB AF] is:
Held down : 0 V
Released: 3.2 V
• MIC UNIT
J2
1
1
2
PHB
2
3
PHOE
3 DISPLAY UNIT
4
PHA
4
5
PHK
5
3.3 V
R1
J2
R2 220
R3 27 SDDAT2
12
R4 27 SDDAT3
11
27 SDCMD
10
R5 GND
9
27
R6 VDD(3R3V)
8
27
EP7 SDCLK
7 MAIN UNIT
MPZ1608S601A
GND
6 (4/13)
R8 SDDAT0
5
27
R9 SDDAT1
4
220
SDCD
3
SDWP
2
GND
1
3.3 V
3.3 V
The underlined parts have been updated from the addendum of the previous version, or from the original page.
The waveform and voltage indications have been added on the original page.
SUB AF
Maximum counterclockwise 0 V
0 V
Center 1.6 V
1.6 V
Maximum clockwise 3.2 V
3.2 V
J1
GND
1
GND
2
SRFL
3
DISPLAY UNIT
SAFL
4
SVRK
5
3R3V
6
3.2 V
C8 C1
47P 0.01
J1 7.8 V
1 MIC EP11
7 MICE EP4 MMZ1608Y102BT
1 7
2 8V EP5 MMZ1608Y102BT EP9
8 AF OUT MMZ1608Y102BT EP10 MMZ1608D301B
6 GND EP7 MMZ1608D301B
2 8 6
3 MIC U/D EP2 MPZ2012S601A
4 SQL EP3 MMZ1608Y102BT
5 PTT CP1 MMZ1608Y102BT
3 5
SHORT
4
TX : 0 V
Explanatory notes
RX : 6.6 V
TX Line
RX Line
Voltage Line (8V)
10-18a
• RIT UNIT
Clockwise Counterclockwise
3.3 V 3.3 V
MFDAK
0 V 0 V
3.3 V 3.3 V
MFDBK
0 V 0 V
RIT (MULTIFUNCTION)
S1
A
J1
B
GND
COM 1
MFDAK
2
MFK
3 DISPLAY UNIT
TP90N00AE20 4
MFDBK
5
GND
6
When [RIT] is:
Held down : 0 V
Released: 3.2 V
J2
AFO
10 AFO
8V
9 8V
MUDL
8 MUDL
SQLS
7 SQLS
PSEND
6 PSEND
DISPLAY UNIT
5 PSEND
4 GND
MICE
3 MICE
2 GND
MICI
1 MICI
* Refer to the PARTS LIST for the value and name of components.