Icom IC-9700 Service Manual Addendum page 69

(Amended page)
June 2019
• DISPLAY UNIT
When the standby : 0~1.2 V (Frequency approximately 2 kHz, PWM)
Other than the above: 0 V
0.1 V (When the Power LED is ON)
R1
DS1 HT-191UYG
Q1
POWER LED 100
LDTC143ZE
STANDBY LED
DS3 SML-D12D8WT86
J51
3R3V MVRK
R51
1 2
[POWER] MAFL MRFL
3 4
GND GND
1k
5 6
S1
VR-A UNIT
LS37J2
When the power key is:
Pushed : 0 V
Not pushed: 3.3 V
[TRANSMIT] [P.AMP/ATT] [NOTCH]
TRSK
S2 S5 S6
LS37J2 LS37J2 LS37J2
[CALL/DR] [NB] [NR]
CALK
S3 S7 S8
LS37J2 LS37J2 LS37J2
[VOX/BK-IN]
S4
J61
3R3V
R61 1 2
SAFL
3 4
GND
1k
5 6
LS37J2
VR-B UNIT
8V
3R3V
When headphones are:
Connected :
Not connected: 0.6 V
RESETI
R401
PHK_
PHK
EP401
PHA 22k
EP402 MPZ2012S601A
PHONE UNIT PHE
EP403 MPZ2012S601A
PHB
MPZ2012S601A
GND
PHB MUD
PHB
PHE
PHE
PHA
PHA 4
MAIN UNIT
PHE
PHE 3
(4/13)
MICE
MICE 2
MIC
MICI 1
J421
R422
SQLS
7.8 V
2.2k
Q462
R462
2SB1132G
Q461 4.7
L2SA1576AR
7.8 V
0.7 V
R461
4.7k R464
7.8 V
J451
100k
EP451
AFO 1
EP452 MPZ2012S601A
8V 2
EP453 MPZ1608S601A
MUDL 3
EP454 MMZ1608S601A
SQLS 4
EP455 MMZ1005S601CT PTT
PSEND 5
MIC UNIT MPZ2012S601A
PSEND 6
Table 1: A
GND 7
EP456
MICE 8
GND 9 MMZ1005S601CT
EP457
MICI 10
MMZ1005S601CT
Q492
DSC7004S0
Pushed key KI0
Tw
P.AMP 0 V
LCD brightness BKLV
NOTCH 0.8 V
NB 1.6 V
0% Tw=62 ns
NR 2.5 V 50% Tw=13.1 µs
Repetition frequency: 38.4 kHz
No key is pushed 3.2 V 100% 3.3 V fixed
R52 DS1(FRONT UNIT)
1k
R54
1k
J101
42
3250
MP1
L102
LCD brightness VLED+
47U
IC101 0% 20.0 V
TPS61161ADRV
50% 22.4 V
1 6
FB VIN
2 5 100% 23.8 V
COMP CTRL D101
3 4
GND SW
DB2141300L
24.4V/38mA
When the touch panel is not touched :
X+: 2.3 V
Y+: 0 V
X−: 2.3 V
Y−: 0 V
[MENU] [FUNCTION] [M.SCOPE]
S9 S10 S11
SVRK R62
SRFL R63 1k
GND 1k
LS37J2 LS37J2 LS37J2
3.2 V
PHK
FUDL 1
P120/ANI19/VCOUT0
2
SVRK
P43/(INTP9)
3
D472 MVRK
P42/(INTP8)
4
P41/(TRJIO0)
5
TOOL0
P40/TOOL0
6
FRES
R472 RESET
7
R501
P124/XT2/EXCLKS
47k 8
LRB706F R502
47k P123/XT1
47k 9
P137/INTP0
10
R503
P122/X2/EXCLK
11
R504 47k
P121/X1
12
C501 47k
REGC
MIC [UP] is pushed 0.4 V 1 13
VSS
14
MIC [DN] is pushed 0.8 V
EVSS0
C502 15
VDD
0.1
No key is pushed 3.2 V C503 16
EVDD0
0.1
FSQS
Q481
LDTC143ZE
SQL is open: 0 V
SQL is closed or when transmitting : 7.8 V
Table 1: B
Q491
L2SC4081
R492
33k
Table 1: C
FSENI
FTRAS
R496
150 Table 1: E
Q493
Table 1
Table 1: D LDTA114EE
When RX 6.6 V
When TX with MIC PTT
When TX other than MIC PTT
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.
Pushed key KI3
SPLIT 0 V
3.3 V
RIT 0.8 V
kHz/Mch 1.6 V
0 V
PBT 2.5 V
No key is pushed 3.2 V
PWRDS
DS2
TX : 2.2 V
RDS
RX : 0.1 V
Q2
YGHR411 LDTC143ZE
R2
100
41
R3 TDS
330
TX : 0 V
Q3
LDTC143ZE
RX : 1.8 V
TWDCLC
TWCS
TWDTX
TWBUSY
IC152
Table 2 17
5 16 TWDRX
AVDD DOUT
6 15 TWPIRQ
X+ PENIRQ
7 14
Y+ DVDD
8 13
X- VREF
UC6528XBNQ4G
[QUICK] [EXIT]
XFCK
S12 S13
LS37J2 LS37J2
IC501
R5F104LCAFB
48
P147/ANI18/VCOUT1
47
P146
46
P10/SCK11/SCL11/TRDIOD1
45
P11/SI11/SDA11/TRDIOC1/(RxD0_1)
44
P12/SO11/TRDIOB1/IVREF1/(INTP5)/(TxD0_1)
43
P13/TxD2/SO20/TRDIOA1/IVCMP1
42
BKLV
P14/RxD2/SI20/SDA20/TRDIOD0/(SCLA0)
41
RDS
P15/SCK20/SCL20/TRDIOB0/(SDAA0)
40
TDS
P16/TI01/TO01/INTP5/TRDIOC0/IVREF0/(SI00)/(RxD0)
39
PWRDS
P17/TI02/TO02/TRDIOA0/TRDCLK/IVCMP0 /(SO00)/(TxD0)
38
P55/(PCLBUZ1)/(SCK00)/(INTP4)
37
P54/(INTP3)
36
MAINDBK
P53/(INTP2)
35 MAINDAK
P52/(INTP1)
34 FLTXD
P51/INTP2/SO00/TxD0/TOOLTxD/TRGIOB
33 FLRXD
P50/INTP1/SI00/RxD0/TOOLRxD/SDA00/TRGIOA/(TRJO0)
TWPIRQ
Each key pushed 0 V
No key is pushed 3.2 V
A B C D E
6.9 V 0 V 0 V 3.3 V
0 V 0.6 V 3.2 V 0 V 3.3 V
0 V 0.6 V 3.2 V 3.0 V 0 V
10-17a
R42
MFDAK
2.2k
J71
[RIT]
R71
MFDAK
6 5
MFK R72 MFK S17
1k
4 3
1k
MFDBK R73 MFDBK
2 1
1k
RIT UNIT
LS37J2
KI0
KI3
R41 R32
[XFC]
6.8k 2.2k
Pushed key KI2
S14
[SPLIT]
XFCK
SCAN 0 V
S20
TONE 0.8 V
A/B 1.6 V
LS37J2
V/M 2.5 V
LS37J2
No key is pushed 3.2 V
KI2
[AFC/AUTO TUNE]
[SCAN]
S15
S23
Pushed key KI1
EXIT 0 V
LS37J2
SPEECH 0.8 V LS37J2
AFC 1.6 V
MPAD 2.5 V
No key is pushed 3.2 V
R22
KI1
2.2k
[SPEECH/LOCK]
S16
RESETI
LS37J2
3.3 V
R201
R203
Clockwise Counterclockwise
3.1 V 3.1 V
MAINDAK
0 V 0 V
3.1 V 3.1 V
MAINDBK
0 V 0 V
MAINDAK
MAINDBK
J601
8V 8V
1 2
8V NC
3 4
5V NC
5 6
3R3V 3R3V
7 8
R4 3R3V NC
9 10
R6 GND LCD_R3
11 12
G2 R601 LCD_R4 LCD_R5
13 14
22
G4 R602 LCD_R6 LCD_R7
15 16
22
G6 R603 LCD_G2 LCD_G3
17 18
22
B3 R604 LCD_G4 LCD_G5
19 20
22
B5 R605 LCD_G6 LCD_G7
21 22
22
B7 R606 LCD_B3 LCD_B4
23 24
22
DISP R607 LCD_B5 LCD_B6
25 26
22
VSYNC R608 LCD_B7 LCD_CLK
27 28
22
R609 LCD_ON LCD_HS
29 30
22
RESETI R610 LCD_VS LCD_DE
31 32
22
GND STB_LEDV
33 34
R611 FRES LTXD
35 36
100
R612 LRXD PWRK
37 38
22
GND GND
39 40
MAIN UNIT
(4/13)
Table 2: LCD control line waveform (frequency and pulse width)
Line name Repetition frequency
Explanatory notes
DE 17.2 kHz
VSYNC 59.8 Hz
TX Line
HSYMC 17.2 kHz
RX Line
CLK 9.14 MHz
−
R3~R7, G3~G7, B3-B7
Voltage Line (8V)
DISP (LCD_ON) 3.3 V fixed
* Refer to the PARTS LIST for the value and name of components.
8V
3R3V
R43 R44
4.7k 15k
[kHz/M-ch] [PBT]
S18 S19
LS37J2 LS37J2
R33 R34
4.7k 15k
[A/B] [V/M]
S21 S22
LS37J2 LS37J2
R24
15k
[TONE/RX>CS] [MPAD]
S24 S25
LS37J2 LS37J2
3.2 V
5.0 V
5V
J201
5V
1
R202 MAINDBK_
MAINDBK
2
82k 47k MAIN DIAL
R204 MAINDAK_
3 MAINDAK
82k 47k
4 GND
7.8 V
EP601 8V
EP602 MPZ1608S601A 5V
EP603 MPZ1608S601A 3R3V
MPZ1608S601A
R613 R3
22
R614 R5
22
R615 R7
22
R616 G3
22
R617 G5
22
R618 G7
22
R619 B4
22
R620 B6
22
R621 CLK
22
R622 HSYNC
22
R623 DE
22
EP604 STB_LEDV
MMZ1005S601CT
R624 FLRXD
22
R625 PWRK
100
Tw
Tw
3.3 V
52.5 ns
16.2 ms
52.5 ns
0 V
55 ns
− Measured at the through-hole
− closest to J101