Voltage Diagrams; And Hm-135 - Icom IC-M802 Service Manual

SECTION 11

VOLTAGE DIAGRAMS

11-1 RC-21 and HM-135
CHASSIS UNIT W1
MICE(SHIELD)
7 1
6 8 2
AFE
5 3
4
MIC
J8701
SW UNIT
MICE MIC
7 1
S1
SKHHAMG24A PTTE MISW
6 8 2
AF1
5 3
4
AF2
PTT
MAIN UNIT
P
S1
R2
SKHHAMG24A
33k
UP
S2
R3
SKHHAMG24A
6.8k
DN
S3
R4
SKHHAMG24A
15k
MC1
W1
W2
HM-135
PHO
J8702 PHE
R8701 33
L8701
HEADPHONE
10
/CLONE
PMUT
R8702 33
GROUP DIAL
S8801
TP90N937E20-15F-1540
3 GPB CP8201 CP8201 GPB
B
2 GPA CP8202 CP8202 GPA
A
1 GND CP8203 CP8203 GND
COM
3 CHB CP8204 CP8204 CHB
B
2 CHA CP8205 CP8205 CHA
A
1 GND CP8206 CP8206 GND
COM
S8802
TP90N937E20-15F-1540
CHANNEL DIAL
SENSOR BOARD
POWER
DISTRESS
/CALL/ALM
DSC/CALL
/CHO/SELCALL
CANCEL
/TELCAL/TXF
TUNE
(THRU/METER)
MODE(DIM)
SET
e-mail
/DSC/TS(ALE)
1(NB)
2(SQL)
3(SCAN)
4(SP)
5(AGC)
6(RF-G)
7(LO)
8(MID)
9(HI)
ENT
0
FREQ/CH
RX(CLAR)
TX(TXF)
FUNC
VR5V CP8209 CP8209 VR5V
VOLUME
VOL CP8208 CP8208 VOL
R8901
TP96N97
GND CP8207 CP8207 GND
VR BOARD DISPLAY BOARD
5V
R8236 100
D8250
1SS355
Q8251
R8247 XP4601
22 C8216 10
D8204
W8201 1SS355
FP
L8203 10
MCE
MC
L8202 10
M2
W8202
D8205
1SS355
IC8260
TC74HC4066AF
1 14
I/O1 VDD
2 13
O/I1 CONT1
3 12
O/I2 CONT4
4 11
I/O2 I/O4
5 10
CONT2 O/I4
6 9
CONT3 O/I3
7 8
VSS I/O3
D8701
R8704
100 1SS355
5V
Q8260
GPB DTC114EU
GPA
CHB
CHA
DS8340
POWER
Q8340
LED
2SC4116
R8340 22k
R8341 470
DISTRESS
Q8341
LED
DS8341 2SC4116
DSTK
R8342 22k
CSCK
R8343 470
DALK
Q8342
DS8342 2SC4116
TUNK
R8344 22k
MODK
R8345 470
SETK DS8343
EMLK
Q8343
2SC4116
T1K DS8344
R8346 56k
T2K
R8347 390
T3K DS8345
T4K
T5K
DS8346
T6K
Q8344
T7K
2SC4116
DS8347
T8K
R8348 68k
T9K
R8349 330
DS8348
ENTK
T0K
DS8349
FCHK
RXK Q8345
2SC4116
DS8350
TXK
R8350 68k
DS8340-DS8350 FP
FUNK
SML-311YT 4.73V
M1
R8351 330
M2
EP8205
DIMMER
R8234
1k
11 - 1
5V
R8253
R8254
33k 6.8k
L8270
100
IC8270
TA7368F
1
NC
IC8250 2
VCC
TC7W04F 3
NC
4
1 8 VIN
5
RIPPLE
2 7
3 6
4 5
W8270
C8283 R8283
R8284 R8285 R8275
10 1k 56k 3.3k
W8281 470
IC8280
R8276
R8281
2 NJM2904M
1k
- 1
100k
3
+ 8
C8286
IC8280 V+
C8284 R8280 47
NJM2904M
2.2 GND
10k D8280
DA221 4
R8287
R8282 120k
10k
R8278 R8274
Q8282
12k 68k
Q8281
DTC114EU
Q8280 2SC4116
2SC4116
LRXD R8204
47k
LTXD
L8201
10
5V
C8207 12p
X8211
CR-636A
C8206 12p
4.95V
1
RES
2
IC8202
XTAL
S-80942CNMC-G9C
3
6.42V
EXTAL
1 5 4
OUT CD MD1
2 5
VDD MD0
3 4 6
VSS NC NMI
7
STBY
8
VCC2(VCL)
C8220 9
SCK0/P52
0.47 10 IC8201
RXD0/P51
HD64F2134AFA20
11
TXD0/P50
12
VSS
R8210 13
47k WAIT/P97
14
EXCL/P96
15
IOS/AS/P95
16
HWR/P94
17
RD/P93
R8211 47k 18
IRQ0/P92
R8212 47k 19
IRQ1/P91
R8213 47k 20
ADTRG/IRQ2/P90
R8215
47k
R8221 1k
R8218 1k
R8219 1k
R8201 47k
5V
IC8290
12.9V
TA7805F
FZ5V
O I
G FZRX
FZTX
FZRS
10
POUT
9
PWGND FZMD
8
PREGND
7
PHASE
6
NF
IC8301
10.11V
AN8010M
O I
G MI EP8293
FE1 EP8292
R8291
1k
AFIN
EP8296
LRXD EP8294
LTXD EP8295
IC8310
7.83V
L8286 L8290
TA7808F
10 HF50ACC322513-B
O I
G
R8706
100
R8707
C8287 1k
4.7 CL1
RES
FZTX
CS
R8708
FZRX NTCG16 RS
WR
RD
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
MESUREMENT CONDITIONS
frequency: 12.29 MHz
mode: J3E(USB)
*ANT(RX): no input
(TX): no modulation
Digital tester
unit: V
60 T6K
P14/A4
range: 20V
59 T7K
input impedance: 10M
P15/A5
58 T8K
no specification : voltage at RX
P16/A6
57 T9K
P17/A17
56
VSS
55 DB0
DS3800-DS8311
P20/A8
TLYU1002
54 DB1
P21/A9
53 DB2
P22/A10
52 DB3
P23/A11
51 DB4
P24/A12
50 DB5
P25/A13
49 DB6
P26/A14
48 DB7
P27/A15
47
VCC1
46 CS
P47/PWX1
45 RES
P46/PWX0
44
WR
P45/TMRI1
43 RD
P44/TMO1
42 RS
P43/TMCI1
41 CL1
P42/TMRI0/SCK2
R8300
1.98V
3.9k
Q8300
2SD1619
1.92V
DS8312-DS8323
TLYU1002
W8242
4.73V
R8241
6 W8238
100k - 7
5
+
IC8280
NJM2904M
R8302
1.97V
3.9k
Q8301
2SD1619
1.91V
J8902
FZ5V
FZRX
FZTX
FZRS
NC
FZMD
NC
GND
GND
GND
J8903 J8601 J8602
FMOD FMOD FMOD
FMODG FMODG FMODG
GND GND GND
FAF FAF FAF
FAFG FAFG FAFG
H13V H13V H13V
TXD TXD TXD
RXD RXD RXD
GND GND GND
GND GND GND
JACK BOARD
J8205 J8220
9V 9V
5V 5V
GND GND
GND GND
CL1 LCL1
CL1
RES RES LRES
CS LCS
CS
RS RS LRS
WR LWR
WR
RD RD LRD
GND GND
GND GND
DB0 DB0 LDB0
DB1 DB1 LDB1
DB2 DB2 LDB2
DB3 DB3 LDB3
DB4 DB4 LDB4
DB5 DB5 LDB5
DB6 DB6 LDB6
DB7 DB7 LDB7
L8220 10
L8221 10
IC8240
HD66421TBO
1 306
GND1 COM100
C8230 0.1 2 305
VLCD1 COM99
C8231 0.1 3 304
VCC1 COM98
C8232 1 4
V5O
C8233 1 5
V4O
C8234 1 6
V3O
C8235 1 7
V2O
C8236 1 8 257
V1O COM51
9 256
GREF SEG160
10 255
IREFM SEG159
11 254
R8241 R8246
IREFP SEG158
1.8M 1.8M 12
VLCD2
13
VLCD3
14
C8237
VCC2
15
0.1
GND2
16
GND3
17
VCC3
R8242 18
OSC1
2.2M
19
OSC2
20
OSC
21
CO
22
DCON
LCL1 23 LCD
CL1
24
FLM
25
M
26
M/S
LRES 27
RES
LCS 28
CS
LRS 29
RS
LWR 30
WR
LRD 31
RD
32
VCC4
33
GND4
LDB0 34 99
DB0 SEG3
LDB1 35 98
DB1 SEG2
LDB2 36 97
DB2 SEG1
LDB3 37 96
DB3 COM50
LDB4 38 95
DB4 COM49
LDB5 39
DB5
LDB6 40
DB6
LDB7 41
DB7
42
VCC5
43
GND5
44 49
VCC6 COM3
45 48
VLCD4 COM2
46 47
GND6 COM1
CONNECT BOARD